User:Inept Wiki User/Sandbox11

=Curtana=
 * Revise for candidate

Planned Structure
 * Opening Paragraph and Image
 * Etymology
 * Appearance (general for 1st/2nd)
 * Principles
 * Symbolism
 * Abilities
 * Basic
 * Strengthening
 * All-English Continent
 * Basis
 * Effects
 * Dimension Severing
 * Attributes
 * Dimension severing
 * Dimensional debris
 * Imagine Breaker
 * Explosion
 * Individual Swords
 * Curtana Original
 * Curtana Second
 * Other (3rd/4th etc, Fragments, Lost)
 * Background
 * Creation
 * Henry VIII
 * English Civil War and Loss
 * Second
 * Chronology
 * OT
 * NT
 * Gallery
 * External Links
 * Template:United Kingdom? perhaps

Unprocessed Notes
Volume 17:
 * Chapter 3: Parts 1-17
 * Part 5:
 * Sword symbol of queen, exclusive to royal family, sacred, passed down generations to each head of state, following sword's history same as understanding history of BRF, useful tool - not destroyed if broken (Elizard), ceremonial sword used in coronation, not sign of being monarch but proof of being person who chooses ruler, no blade/tip flat, no danger in letting hang down, artificial but provides bearer with same type of power as Michael, sword freely control power of not just archangel but leader/most powerful of angels, only used within boundaries of UK. Provides large amount of Telesma to queen/knights, special rule only takes effect within four cultures (ENG,SCT,WLS,NI) and three factions (Royal, Knight, Church) exists to enforce rule. Curtana functions as sword providing grerat power to those who enforce rule and protect UK.
 * Anglican Church - Christian Church originally to country. Created by Henry VIII in 16th century, as hated other countries interfering with governing his country (Non-text note: Marriage). To get rid of all external influences, made sure of two points when created church. 1st - country never violated by foreign influence, 2nd - King of England top of Anglican Church and not have to listen to Roman Catholic Pope. Establish position of king as leader of angels - position higher than Roman Pope, then lead people with knights as army of angels. Queen can possess same type of Michael, leader of angels, as long as holds Curtana in country.
 * Henry VIII used 4 countries (England, Scotland, Wales and Ireland) to create mechanism. Four - number indicates the earth. Wanted to create agical meaning only holding true within 'all-English land' by constructing map made of meaningful number of countries. Create land glorifying independence and no influence from many areas of power Pope holds at time, possible troubled by complicated politics of neighbours and wish for legendary land from old stories (Non-Text Note: Marriage/Heirs). Reason political. Prepare land of 4 nations, king head angel, knight angel army. Couldn't do with just 1 country. Symbol of multiple nations necessary for All-English Continent to receive blessing. Politically under control of one large country, beneficial politically - UK, ruler at top can use power to full. Can't get as flashy as detected during Angel Fall, power but still human, angel-level spells not easy to use.
 * Henry VIII didn't have it easy. Wanted four countries to construct rule, Scotland independent nation at time and at war. Assume easily conquered when made rule, turned out formidable opponent. For while, look like rule in danger of falling. Problem in only within 4 countries - can't use power while in colonies. Part of Ireland independent, area not used, Northern Ireland kept in UK to maintain 4 country structure.
 * Setting up rule, Curtana level up from being sword deciding who king would be to sword determining who leader of angels was. Only has effect on royalty/nobles, unfair to common. Anglican Church not affected by power of Curtana. Treated as using power of church as humans, not receive blessing, just giving large power to queen and knights.
 * UK - made of 4 cultures, protected by 3 organizations, Curtana used as tool to construct relationship between 3. Buckingham Palace not need security as power of angel leader.
 * Caution of national treasure. Even if damage, historically Second. Original disappeared. 2nd hurriedly created so no hindrances to ceremony. New one could be made - not simple, artificially created but method lost, 3rd/4th not created so easily.
 * Part 6: Excavating, no document/deduction based on equipment list, working at spot where fortress used to be. Amount of time/money spent indication.
 * Part 15: Excavation near Edinburgh, other two hideouts
 * Part 16: Ceremonial sword/Sword of Mercy - coronation/royals, outdoes later Second,
 * Chapter 4: Parts 1-8
 * Part 1: Only fifth of power in Curtana Second, rest taken by Original, if fought now Second cut in two, makeshift version made as replacement when lost so power returned to rightful place rather than taken away, centuries since lost in revolution - kings/queens search for it but not find even hint, NL specializes in Norse spells - guess used spell searching for gold veins passed down in relation to Dvergr
 * Others
 * Part 2: Brings out the sword
 * Part 7: Country constructed around Curtana and 4 cultures, UK bound by special Christian rule, monarch leader of angels, knights angels, in country - difference in power, knights see church as tool to use, ideology from synthesis of knighthood paths
 * Epilogue: Power left in Second is enough to sever dimensions

Volume 18:
 * Chapter 5: Parts 1-10, BTL3
 * Part 1: See how sword doing, have it fit hand.
 * Part 3: Knights enhanced by Curtana, not many reach Acqua's level. Both with Saints and power of Curtana, just have large amount of power not make one strong. Need skills/disposition to control large power. Acqua/KL power and skill. Acqua Saint/GRS. KL Curtana/All-English Continent, magic optimized in time as knight. Symbols not easily taken from them. Constructed spells other not know of. Doubt Villian can wield CO, personality not allow and doesn't possess ability. Not saying Curtana everything, effective means of military strength. Knights choose Curtana Original as consider the best option.
 * Part 3B: Hrunting, Telesma acting as blood. Idol Theory. Using Curtana and Hrunting, two swords symbolizing UK to further strengthen ability to control different types of power within country. Wondering how body was storing and using mass of Telesma greater than power held by average Saint. Give life to sword/country, devoted to theory of knights.
 * Part 5: Fragment of sword, fragments of excellent weapons/spiritual items still display power of original, e.g. Durandal having spear fragment. Someone to fight against France using legend of its king. Use anything can. Name 'Curtana' comes from French word. Believe means 'short sword' due to broken off tip.
 * Part 8: Member of knights borrowing power from Curtana Original and All-English Continent.
 * Part 9: Power lent by Curtana.
 * Part 10A: Usage, Carissa approaches after KL defeat. Staring at Acqua, claim underestimate/small fry. Acqua hit large tree and use shockwave to knock Touma away. Raise CO, ceremonial sword originally used to cut UK apart from planet Earth and control everything within kingdom, apply special quality - can do this, swing down sword - sever dimensions (Touma seeing for first time). Range little less than 20m. Strange noise, something pass through along line two on just before. Something like belt/wall only about as wide as CO expands. White, looks little like plastic model before colored. Object look not complete appear. Could feel when practicing, old item, disposition seems to change when wielded based on modern military knowledge, sure mother would be able to do similar as same nature. cross section get by slicing 3d object is 2d, 2d to 1d cross section. Clunk, belt-shaped object irrationally floating in air fall to ground next to Touma. Feel like pottery, actually extremely heavy despite look, even after fall - sinks into black soil. Dimension 3> sliced, cross section appears in world in 3d form, ruins of cross section appears like that. Rest sword on shoulder, not attacking but dimension sliced along trajectory and colorless belt-shaped object falls at feet. Simultaneously sever all dimensions at coordinates whether higher or lower, only corss section objects created that can perceive are ones appearing in 3d world. Can cut through dimension existing but more of concept than anything, no matter how much steel to protect body, cleave in two. Scale great, universe expanding due to big bang, no one feel universe expanding with 5 senses, power on that level. All Dimensions Severing Spell. Spin sword around ruin cross section objects spill out. First used, much easier to use than expected, flaw - too easy and takes fun out. Can slice not just manmade nuclear shelter but earth and universe. Touma suggestion, cutting only on edges, sides normal steel, hit side with sword to stagger, right hand.
 * Part 10B: Method of dealing with IB. Stop spinning, Flat end pointed down. Stab end into ground, shockwave noise, dome-shaped destruction with radius of 500m erupts with Carissa at center. Likely take flow of magic power focused on severing spell, change to different route. Created destructive power not high as power needed to slice through other dimensions, shockwaves scattered evenly in all directions in 3d world. Explosion. Ground torn up, trees knocked down. Power too great, not enough to completely negate. Pressure/bone creak. Pushed by power and lifted into air, blown up 200m up into air.
 * BTL3: Large scale magic circles along roads under jurisdiction of British government. Dimension slice from Second.
 * Chapter 6: Parts 1-11, BTL4
 * Part 1: Former forest, rest sword, domed-shaped explosion not proper way of suing. sword lightly vibrating, subside before long but give feeling that vibrations would break sword if continue to use like that, decide need more than emergency measures on battlefield, head back to Buckingham Palace for proper tune-up, defeat of KL felt through tremor in the Telesma amount distributed. Track dismantled in points between London and Folkestone. Amount of Telesma from Curtana Original, won't die even if helicopter falls to pieces around in midair due to anti-air spells, prioritize getting back.
 * Part 1B: Attacked submarine with kicked debris from 100m slice.
 * Part 3:
 * Part 4:


 * Part 8:
 * Part 9:
 * Power from sky fortress, not even 10th of power controlled by Curtana Original, irregular power forced in act as stimulus, send Curtana in bad direction, stability lost, fragments of power leak and damage Carissa's body like blade stuffed into bag tearing out.
 * Most of power distributed to knights lost, about half of Carissa's own power torn away.
 * Suppressed it, confident that came up with plan as sending out of control foothold to overthrowing from previous example, not fatal.
 * Car recovered and sealed.
 * Part 10:
 * Weakened to certain extent, not able to avoid reaction. Large amount of Telesma emitted in all directions from 2nd princess at center. Effect on spiritual items/facilities, 3 small churches destroyed. Reading from remaining observation equipment in St. George's Cathedral - dense Telesma hanging over London. Risk of explosion enveloping entire city.
 * Trust still, can only until Telesma naturally diffuses. Is it possible Original power could be restored and knights focus strength of defending palace - not sure about knights, Curtana not problem. Power too strong so can't be restored easily after catastrophic failure. Given theorized power, should take at least a month.
 * Part 11:
 * Control lost, artificially sent out of control using safety device below Buckingham Palace, knight unity on verge of collapse.
 * Spell of Thororm - target any one of weapons aware of, zero for 10 minutes. Knight keeping ability to surely kill head of state guilty of lèse majesté. Demonstrate loyalty by making theory behind it construct so can't kill royal (see 7-7, 8-1).
 * At one point, worried could combine all patterns into ultimate strike not evaded, blocked or counterattacked. Can't use all at once, only one at time. Believes Carissa with Curtana Original could likely pull off that strike.
 * BTL4:
 * Feel faster if fully open up Curtana power and run rather than riding horse, want to avoid doing for long period of time.
 * Curtana Second used to teach politicians lesson after using Villian as bait to gain South America 10 years previously.
 * Think after expanding Curtana's effective area. Spiritual item that applies concept of angel leader Michael to head of state within UK. If used outside, could become disaster overrunning Europe and carry out divine punishment
 * Sword like conductor's baton controlling massive spell put together geographically by 4 cultures comprising UK. Knights protect while Carissa single-handedly demolishes Europe. Possible human magic not able to harm if fully released power. Almost impossible for anyone to rival unless true angel or Magic God steps forward.
 * Chapter 7: Parts 1-7, BTL5
 * Part 3
 * Part 4
 * Part 5
 * Part 6: Rimea's speech
 * Part 7: Spell of Thororm ineffective against Curtana and phenomena produced by it


 * BTL5
 * Chapter 8: Parts 1-5
 * Epilogue
 * Elizard picking up discarded Curtana Second, chipped in fight with Carissa. Thinking of having Touma utterly destroy when see Knight Leader approaching.
 * Carissa collapsed on road far from palace grounds, still time before dawn, roads empty. Hand still holding Curtana Original's hilt, blade broken off halfway up, magical power lost, power returned to Curtana Second. Think about intentions of fighting 90 million people. Fiamma arrives, gather strength in hand, remember broken, click tongue, throw hilt away. Think angel aligned with Michael, wonder if after sword using power from same angel. Lost functionality, but wouldn't work, right type of power, capacity wouldn't last, blown to pieces. Stealing remote control. Reveal manipulation. Without Curtana, not have much in way of direct attack spells. Average level - not stand up to Fiamma's level.

Part 3
V20:
 * Joan of Arc. Marie Antoinette.
 * Maiden - splendid dress mostly made of loose white cloth. Unhealthily pale, sunken eyes. Durandal - nation-level spells similar to Curtana.
 * Knights borrowing power, Elizard holds sword, Carissa supposedly not receiving benefits?
 * Blade formed by Curtana Second fragment, compete with Durandal with destructive power of France.
 * Silver piece of metal, only few cm long. Sword of light protrudes. Same idea as Charlemagne (fragment of holy spear into hilt to give sacred power/value).
 * Byproduct of clash, Carissa never expected to display that much power just by being in royal's hands. Destroying isn't enough, hate sword because of loopholes/secret tricks.(4-4)(WR)
 * spanking(3-6)

V21
 * (relying on power of 'artifact' not enough).
 * Collide with archangel, impact ground, sword of light, 3km above fighting, float down, swing sword, said Power of God summoned - being no different from monster - wanted to meet real angel and ask about heaven's secret - not understand language
 * Trump card superior to Curtana
 * Point sword, speak - claim wields power of archangel too.(8-1)
 * 8-2
 * Charge, sonic boom, cleave through wings but stopped by hands, not scratch, release explosive energy to skid back large distance and escape grasp
 * Target Carissa, fly past face, vaporize mountain. Readjust aim.
 * Kicked out of way as fired 'thing' (obscure sixth senses, manip. info)
 * Wings of ice, similar attack, fire without read at supersonic speeds like gatling gun
 * Dodge projectiles, physical capabilities beyond normal humans, without sixth sense, chance of dodging barrage for extended period nil, drain stamina.
 * Power of archangel on paper, not problem of 'power', problem of 'technique'/'knowledge'. Not archangel, can't compete with real one. Just relying on power of 'artifact' not enough'.
 * Increase speed fire at bystanders, take advantage, Curtana Second take brunt of attack but blood spilt/bones breaking/fear for life, shard shattered under pressure.
 * Firing again, sword created using power of shard to borrow power of England's warriors, shard broken - power vanishes. Not limited to one, blades of light, dual swords, ten more shards tied in belt.
 * Continued minor injuries building up while dodging major ones. Injured more by shards of broken ice than direct blow of wings.
 * SAMs fired on fortress, fly off to intercept
 * Fight against archangel, strain of maintaining power output of Curtana Second, body at limits.
 * Sword of light, national treasure with immense power, still man-made item holding man-made power. Nothing compared with power of true archangel(8-2)

V22
 * Sword of light, Glastonbury moving but altitude limitation
 * Threaten to shove Curtana up Archbishop's rear-end if not disclose information necessary (3 churches techniques and knowledge needed to bring Star down)

Opening
Curtana (カーテナ) refers to the sword that is used for the coronation ceremonies of the British monarchs. It is the United Kingdom's greatest spiritual item, empowering the wielder, a member of the British Royal Family, though especially the monarch, with the power of Archangel Michael, if they are on the soil of the United Kingdom.

There are two such swords, the Curtana Original (カーテナ＝オリジナル) and the Curtana Second (カーテナ＝セカンド), the latter created after the former was presumed to be lost to history. Prior to the events of the British Halloween, additional replacements of the Curtana could be made.(Ref)

Etymology

 * Latin/French name origins. In-series reference (18-5).
 * The name ‘Curtana’ from French word. Believes means ‘short sword’ due to broken off tip.

Appearance
The Curtana Second appears as a stereotypical double-sided Western sword. Along with the hilt, it is about 80 centimeters long. As its name suggests it had no tip and edge. (Verified) Artwork for the Curtana Second has the metal parts colored silver, though no direct reference to its color has been mentioned other than the fact that New Light found it by using a spell that searched for gold veins in the earth, though it is likely that the Curtana Original is gold while Curtana Second uses a different metal.(Revise)

In the artwork, the hilt contains a thin brownish-colored grip and at its end is a pommel where the knuckle-bow is attached, connecting to the crossguard and then wraps around at the base of the "blade". Upon the surface of the metallic parts of the sword, especially the blade, are artwork of vines or plants. As the Curtana Second is a replacement, it is the Curtana Original appears the same as well. However, the most noticeable difference is that there are two metallic "ribbons" intertwining at the base of the blade. While one extends from the knuckle-now, one of the other ribbon's protrude perpendicularly to the blade at the hilt, seemingly acting as a third quillon of the crossguard.(Reference - Need to verify)

Symbolism
The Curtana is a sword that is passed down from generation to generation within the British Royal Family to the head of state, the British monarch. It is a ceremonial sword that is used during the coronation ceremonies in Westminster Abbey. The sword is referred to as the "sword that decides the king", specifically it does not mean the sword is the symbol of the monarch but represents the proof of being the person chosen to be the ruler. It is also known as the Sword of Mercy (慈悲の剣) because of its form, having an edgeless and tipless blade.

However the most important symbolic aspect of the sword is its use as a spiritual item. It is referred to as not only as the sword as that decides the king but the sword that determines the country's leader of the angels.

Primary functions
The Curtanas empowers the wielder with the same type of power that Archangel Michael, the leader of angels, possesses. Despite the similarities, however, the Curtana Second is still inferior to the Curtana Original as Lessar has stated, with the latter easily able to chip the previous sword when clashing. The greatest example of the power that the wielder of the Curtana Original gains when activating the effects of the sword is demonstrated by Carissa during the Battle of Buckingham Palace, where she alone fought against at least 500-strong members of the Anglican Church forces, which includes three Saint-level sword users. She is easily able to catch up with their speed and counter their attacks. During the battle she survives two different kinds of bombings, one from a magical large-scale flash cannon and the other a Bunker Cluster cruise missile attack with barely a scratch on her. Carissa was able to achieve such feats despite the crippling effects of the Overloading of the Curtana Original.

With the power of the Curtana Original, the knights, representing the army of angels, are empowered with a large amount of power. So great is their power that the Anglican Church during the British Halloween dared not to face them head on, quickly heading into the shadows. Some knights, like the Knight Leader, have based an entire spell in their usage of the power that is given to them by Curtana, specifically his Hrunting. Despite this, they are not so powerful that they cannot be contested, as evidenced by Sherry Cromwell's attack on them, Stiyl Magnus' victory over them in Edinburgh Airport, and the Knight Leader's defeat at the hands of Acqua of the Back using a simple blow to the back of his neck. When the Union Jack spiritual item is used, this power can be used by the people of the United Kingdom against the wielder's wishes.

Curtana Second offers the same benefits to the wielder and the knights as well, though how different it is to the Curtana Original is unknown. When Carissa activated the Curtana Original, only a fifth of the Curtana Second's power remained. It is later referenced by Carissa, after having much of its power already taken away by both its overloading, that the Curtana Original has more than 80% of its power while the Curtana Second doesn't even have 20%. Despite this, it was still usable, able to cut dimensions and give at least some benefit to Elizard if she chooses.

Due to the structure of the "All-English Land" the effects of the Curtanas are only applicable within the borders of the United Kingdom, a fact that is exploited by the witches during the Battle of Islay. This can be bypassed, however, through the use of a mobile fortress belonging to the United Kingdom, as what happened during the Battle of Dover Strait, where the knights made use of the Glastonbury mobile fortress to allow them to gain the blessings of the Curtana Second from Elizard, who is still in the United Kingdom proper. This is because the fortress forcibly designates the surroundings as within the United Kingdom, so it allows Curtana’s usable area to be rapidly expanded.

As it is a spiritual item it can be destroyed by the Imagine Breaker touching it. Moreover, it is also vulnerable to Index's Spell Intercept, allowing to alter its trajectory when used.

All Dimensions Severing Spell
Carissa refers to the sword as originally being used to cut the United Kingdom apart from the planet Earth and control everything within the kingdom, likely referring to the concept of the "All-English Land" or All Dimensions Severing Spell.

The All Dimensions Severing Spell (全次元切断術式) is a spell that is unique to using the Curtana Original, and unlikely the Curtana Second as well. It is activated by merely swinging the blade and apparently wanting it to happen. The effect of this is the creation or appearance of dimensional debris due to the cutting of dimensions. The dimensional debris is created by severing every dimension at the coordinates whether they are higher or lower dimensions. These cross section objects, or dimensional debris, that are created appear as such, large white objects that look like uncolored plastic, despite the fact that it severs all dimensions is because humans can only perceive those that appear in a 3-dimensional world. The dimensional debris travels along the trajectory of the sword. The largest known dimensional debris created by Carissa is 100 meters using the Curtana Original. Despite their cumbersome looks, the debris created can be turned into powerful projectiles or shields, enough to even withstand a flash bombardment from the Coven Compass. Indeed, much of Carissa's strategy during the Battle of Buckingham Palace was to use the debris to cut down the numbers of her enemies by using them as projectiles while also using them as shields.

Kamijou Touma's Imagine Breaker is unable to negate the dimensional debris created by the dimensional cutting attack as it is a natural phenomenon created by the spell. However, since the sword's cut is so sharp there is a 1.25 second lag between the cut and the appearance of the debris. As such, if the Imagine Breaker can be used in that time-frame, the dimensional debris will not appear.

Finally, if the wielder chooses they can create a large explosion using the Curtana Original. During Touma's encounter with Carissa in Folkestone, she stabbed the sword onto the ground and took the flow of magic power focused on the All Dimension Severing Spell and changed it into a different route. The result is a powerful explosion that expands in all directions with a radius of 500 meters in the 3-dimensional world with the wielder in the center. It is powerful enough to tear the ground and knock down trees. It is also a powerful enough not to be negated completely by the Imagine Breaker, similar to Index's Dragon's Breath or Stiyl's Innocentius. This effect however isn't the proper way to use the sword and would cause the sword to vibrate. This would later force Curtana to return to Buckingham Palace as a result in order to give it a proper tune-up.

Curtana Original
The Curtana Original (カーテナ＝オリジナル) is the original sword.(Ref)

At the climax of the British Halloween, the sword was destroyed by Imagine Breaker and lost all functionality,(Ref) though its separate tip still retains power as part of the Curtana Lost.(Ref)

Curtana Second
The Curtana Second (カーテナ＝セカンド) is a replacement sword, created after the Curtana Original was presumed to be lost to history.

Curtana Second shards
Due to the clash of the Curtanas, Curtana Second was chipped and fragmented in the battle. Carissa later collected at least thirteen of these shards or fragments. With these shards, Carissa can create swords of light up to 1500 meters long. Like the Curtana Second, it gives her strength, endurance, speed, near invulnerability and the ability to slice through dimensions; making her capable of matching Durandal, which was described as similar to Curtana. Carissa often combines the use of the shards with a mobile fortress of the United Kingdom, allowing her to bypass the restrictions of the sword and its empowering effects being only be used in the soil of the United Kingdom.

Other Swords
The monarch and the knights' ruling structure constructed from Curtana and the "All-English Land" has "reserve power" built in. What this entails is that even when the Original was lost, their rule continued because they had purposefully left behind the ability to make another one. The reason why the Curtana Second was "hurriedly" made was because of the security measures that were prepared in the event that the Original becomes lost. So long as the clues that have been left within Buckingham Palace remained, there is still a possibility a Curtana Third or Fourth can be made.

Fragments
At some point, the severed tip of the Curtana was installed into a spear, known as the Curtana Lost (カーテナ＝ロスト).

Creation
It's referred to in the narration the Curtana Original seemingly existed prior to the ascension of Henry VIII as king of England.

Henry VIII
The existence of the Curtana Original is closely tied with the history of the United Kingdom itself. King Henry VIII, wanting freedom from the influence of other countries and the Pope of the Roman Catholic Church in the governance of his own country, created the Anglican Church. In order to get rid of all external influence, he proclaimed that the country would never be violated by foreign influences and made the king (monarch) the Head of the Anglican Church. He established that the king of the Anglican Church is the leader of the angels as it was a position higher than the Pope, and that the Knights as an army of angels. To do this, Henry VIII made use of the nations of England, Scotland, Ireland, and Wales for his "All-English Land", four representing the element of earth, in order to construct that magical meaning.
 * WivesThe matter of wives and heirs

Curtana Original represents the position the monarchs have using this magical symbolism. In consequence, however, the symbolism of the monarchs being the leader of the angels and the knights their army of angels, and the blessings that the Curtana Original can give, could only apply within the boundaries of the country, using a United Kingdom mobile fortress as a loophole notwithstanding, and the fact that the "All-English Land" requires all four nations as part of one country.

Indeed, the constant conquests of the other nations likely stem from the fact to maintain this magical symbolism. Henry VIII himself had trouble with the independent Scotland as he waged war with the nation. Later, Ireland would later declare independence, leaving only Northern Ireland part of the "All-English Land", allowing for the symbolism to keep working. Carissa refers to the sword as originally being used to cut the United Kingdom apart from the planet Earth and control everything within the kingdom, likely referring to the concept of the "All-English Land" or All Dimensions Severing Spell.

The Curtana Original was prepared for the possibility of it becoming lost. As such, the Curtana Original had clues prepared within it for the analysis needed to create a Second one, and that the structure of the "All-English Land" would not be thrown into chaos when the Second was activated. These clues later end up in coded documents and paintings put inside Buckingham Palace, there they were analyzed in order to create Curtana Second.

English Civil War and Loss
The Overloading of the Curtana Original is an event that occurs when the Curtana Original cannot properly contain its power and violently releases it. Due to the tremendous power the sword holds, if a mistake is made in controlling the power and the user loses control then it will destroy the user itself.

The Puritan Revolution, also known as the English Civil War, later occurs and due to the Curtana Original losing control it allowed the civil war to succeed. The sword later somehow ends up in a fortress, which would also fall into ruins, in Edinburgh, Scotland, and was presumed lost to history.

The Second Sword and Contingencies
Curtana Second was created in a hurry afterwards so there wouldn’t be any hindrances to the ceremony.

The monarch and the knights' ruling structure constructed from Curtana and the "All-English Land" has "reserve power" built in. What this entails is that even when the Original was lost, their rule continued because they had purposefully left behind the ability to make another one. The reason why the Curtana Second was "hurriedly" made was because of the security measures that were prepared in the event that the Original becomes lost.

In order to prevent what had happened in the English Civil War, a facility is later built under Buckingham Palace as that is where the user of the Curtana mostly stayed in for much of the year. The facility interferes with the sword by reversing the flow of the magic power, stabilizing it. There is also a special railroad car with a magic circle for the Curtana. It is set up so it can be promptly taken to the area directly below Buckingham Palace when the Curtana is heading out of control. Only a member of the Royal Family can interfere with this mechanism.

So long as the clues that have been left within Buckingham Palace remained, there is still a possibility a Curtana Third or Fourth can be made.

Recent History
During the 20 century, a large part of became, though the United Kingdom retained  in order to maintain the four country structure needed for the All-English Continent.

Passing down the royal line, the Curtana Second would later come into Queen Elizard's possession when she ascended the throne.

Ten years prior to the events of the series, after the Princess Villian hostage crisis, Elizard used the Curtana Second to punish politicians in the royal faction who had attempted to use Princess Villian as bait in order to seize the Spanish Astrological Sect's territories in South America.

At some point in the past century, the spiritual item Union Jack was created to allow a royal family member to interfere with the distribution of power from the All-English Continent controlled by the Curtana, and hidden in the British Museum.

In response to recent attempts by European Union to weaken the United Kingdom, under the influence of the Roman Catholic Church, and the perceived weakness of Elizard's pacifism, Second Princess Carissa secretly sought out the lost Curtana Original in order to take control of the country.(Refs) Her plot was supported by the Knights of England, who determined that the path would be the more beneficial for the UK, and New Light, who actually searched for the sword. (Refs) The events of the Eurotunnel bombing and the Sky Bus 365 terrorist incident sealed Carissa's determination/decision. (Other Refs)
 * Reasons - Isolation, eliminate enemies, as well as threat of Curtana afterwards

Toaru Kagaku no Railgun SS2: Shopping Mall Demonstration
During the events in the Russian shopping center, New Light had an autonomous spiritual item searching for the Curtana Original, and it located the sword shortly after the conclusion of these events, beginning excavation after finding it.

British Royal Family Arc
The Curtana Original was at the center of the events of the British Halloween, with Carissa making a coup d'état attempt after having the sword delivered to her by New Light, with the support of the knights.

In the evening on October 17th, Elizard explained about the Curtana to Kamijou Touma during their initial encounter prior to the meeting to discuss the Eurotunnel bombing. At the same time, New Light were transporting the Curtana Original towards London after excavating it from the site of a former fortress near Edinburgh.

Drawing attention after intervening in the Sky Bus 365 terrorist incident to prevent the roads down from Scotland from being closed off and impeding their journey,(ref) as well as a subsequent mistake on Lessar's part,(ref) several members of New Light were captured after being pursued through London,(Ref) but they were ultimately successful in using the Skíðblaðnir to send the Curtana Original to the case held by the Knight Leader, with Carissa in Folkestone.

At midnight, with the Curtana Original in her hands, Carissa initiated her coup d'état and the knights stationed throughout the United Kingdom, greatly empowered by the sword, soon seized control of much of the country. (Other refs) Unable to fight back directly, many members of the Anglican Church chose to go into hiding or head outside the effective area until they could devise and mount a counterattack. (Other refs) With most of the power from the All-English Continent returned to the Curtana Original, the Curtana Second only had about 20% of the power left, though it still had enough power to sever dimensions.

Carissa subsequently sought to eliminate her relatives and the threat of anyone else being able to wield the Curtana, though the attempted execution of Villian was foiled by the return of Acqua of the Back (aka William Orwell).(Ref) After the Knight Leader's defeat at Acqua's hands, Carissa made use of the All Dimensions Severing Spell with the Curtana Original before directing the power in a different direction and causing an explosion to overwhelm Kamijou Touma's Imagine Breaker and send him flying. Feeling the vibrations in the sword from this unintended use, Carissa decided she needed to tune the sword, but cut dimensions again and launched a large piece of debris to sink a French nuclear submarine hidden in the Strait of Dover during a call from the French president before heading off.

Following the Battle of Folkestone, as the Curtana Original was unstable, Carissa returned to Buckingham Palace in order to stabilize and fine-tune the blade. The Anglicans took advantage of this by having a small team infiltrate the tunnels connecting to facility below the palace and neutralize the barriers so they could access the special railway car remotely, and used it in conjunction with a large-scale flash spell from the Coven Compass to interfere with the sword, providing enough of a stimulus to send its unstable power out of control. The subsequent overload and resulting Telesma discharge, at 2:30 AM on October 18th, was partially suppressed by Carissa, preventing fatal damage, but the power distributed to the knights was lost and half of Carissa's own power was torn away. The discharge damaged many of the spiritual items and facilities in London and blanketed the capital in dense Telesma, forcing a temporary halt to hostilities until it cleared as the use of magic risked setting off an explosion that could envelop the entire city.

Although the Curtana's power was reduced, it was still enough for Carissa to fight many adversaries simultaneously, including 3 Saint-level opponents, mostly by herself during the Battle of Buckingham Palace, as well as withstanding multiple bombardments, both from the Coven Compass and the Bunker Clusters she had ordered to be fired at Buckingham Palace - not only to eliminate her enemies but also the means to reproduce the Curtana hidden within the palace.

During the latter part of the battle, when Carissa fought her mother, the Curtana Original clashed with the Curtana Second, chipping shards out of the latter in the process. The Curtana Original was eventually destroyed by Kamijou Touma's Imagine Breaker, when he was launched at Carissa by Acqua during an opening created by the Union Jack redistributing power from the All-English Continent to the British people and Index's Spell Intercept.

Note: Search specific references

World War III Arc
During the Battle of the Dover Strait in World War III, the Mobile Fortress Glastonbury was used to forcibly designate the waters of battle as within the UK's borders, allowing power from the Curtana Second to be supplied to the knights in order to turn the tables. When the Maiden of Versailles took to the battlefield herself with Durandal, Carissa made use of a sword of light produced by a fragment of the Curtana Second to fight against her.

Carissa also used the sword of light when she teamed used with the Maiden in a clash against Misha Kreutzev (aka Archangel Gabriel). While their swords were initially able to cleave through Misha's ice wings, their attack on the archangel's main body was stopped completely by Misha's hands/itself. When Carissa was forced to intercept one of the archangel's powerful strikes to protect some nearby soldiers, the Curtana Second shard took the brunt of the blow and shattered from the pressure. In response, Carissa brought out two more shards and wielded dual swords of light, with ten more fragments held in her belt in reserve. The fight continued a little longer before Carissa ordered a missile attack on the Star of Bethlehem to force Misha to fly away to intercept them, with her body at its limits from the strain of maintaining the Curtana Second's power output and fighting against such a powerful foe.

She later used the sword to sever some of the Golden Arms of Telesma emerging from the ground as Fiamma enacted the last stages of his plan with the Star of Bethlehem.

Magic God Othinus Arc
Carissa made use of Curtana shards again during the operation against GREMLIN and the pursuit of Othinus in Denmark.

Coronzon Arc
During the evacuation of the royal family to Scotland in the midst of the Crowley's Hazard invasion of the United Kingdom and the emergence of the reproduced Golden Dawn, Riméa carried the Curtana Lost with her. When the reproduced Golden Dawn attacked the royal carriage, in order to prevent them from reaching Edinburgh Castle and breaking the anonymization barrier on the grave of Samuel Liddell MacGregor Mathers, she brandished the spear towards the reproduced Mathers, making use of his need to maintain his claim of being the Count of Glenstrae to delay him for a few seconds and buy Ange Catacombs and Cutia Virginroad time to act.

Trivia

 * Real-life Curtana's background