Oriana Thomson

Oriana Thomson (オリアナ＝トムソン) is an 18-year-old blond magician who works as a mercenary. Her sorcery name is Basis104, "The one who carry the basis." (礎を担いし者)

Background
She’s known as the "Route Disturb" (追跡封じ （ルートディスターブ）), a top-notch courier in the magical world. This woman’s ability is that she’s able to run and hide, and that she’s able to get away from pursuers even if they find her. More accurately, Oriana is a woman who will do anything to get away from her pursuers. Also, nobody is able to keep track of her actions. Even when they are prepared, she’ll still be able to get away. Oriana Thomson is a magician with many spells at her disposal, and she’ll destroy bridges, create fires, set up many talismans to get her pursuers off her back.

Personality
Oriana is not above using her attractive looks to make others vulnerable and is an escape master able to use a "human wall" formed by a crowd to slip inside. Her manipulative nature is shown when she was chased by Necessarius and normal citizens with no link to magic claimed to be her "best friend". Oriana is also known to have clashed with the British Puritans in while still in London. She is shown to be flirtatious when she teasingly asks Touma if he wanted a kiss and is considered a mature, older sister.

Daihasei Festival Arc

 * Main article: Daihasei Festival Arc

She first appears during the Daihasei Festival, for which she was hired by Lidvia Lorenzetti for the transportation of a magic artifact ("The Cross of St. Peter") to Academy City. During this, she meets Touma who dispells her Chaos and calm on the surface spell after she stretches hands with him thus forcing her to retreat as she is pursued by Touma and then by Stiyl and Motoharu, during the chasing she attacked Himegami out of fear and her trap hurt Fukiyose inadvertently, severely injuring both of them to the point of near death. She's also laid traps to hurt Stiyl and defeated Tsuchimikado in battle.

Eventually she fought Stiyl and Touma in District 23 at the best location to set up the Croce di Pietro in Academy City, and was defeated after a prolonged battle.

Document of Constantine Arc
When Lidvia was exchanging information with Stiyl it was mentioned Oriana had accepted a deal to work for the Anglican Church against the Roman Catholic Church, in order to get out of being locked up.

English Civil War
She is hired by Necessarius to help them investigate the source of the Euro Tunnel explosion. She along with Touma investigates about New Light and both together ends chasing the magician girl Lessar and consequently defeating her. When Lessar told them their job as convoyers and was about to reveal the identity of her employer, Lessar is shot from a long distance weapon which she recognizes as a job from the English Knighthood. At the last of 18th novel, she helping Sherry who lost her control fighting English Knights, and after that was hired by Villian to track down William Orville before they face off against Carrisa.

Abilities

 * Chaos and calm on the surface: Is a spell that has the same function to Stiyl's Opila runes but this applies only to Oriana herself. This allows her to move around without being detected by people or technology.
 * Snapshot20101127130036.jpghand (速記原典): Oriana is gifted in the fact that she can "write" shorthand originals, Grimoires that contain spells. However, she can't maintain them due to her writing being too sloppy, so they vanish after a set time or after one use and she can't use the same spell twice if she has one flash card. Her spells revolve around the Four Elements, with one of four words - "watersymbol", "windsymbol", "soilsymbol" and "firesymbol" - usually written on the slip of paper to invoke a certain elemental spell. In fact, she deliberately uses the wrong combination of colors to cause the spell to become unstable.
 * Route Disturb (追跡封じ): Her specialty is that she’s able to run, hide, and evade from pursuers even if they find her. More accurately, She'll do anything to get away from her pursuers, even if it causes collateral damage.
 * Counterspell - Oriana uses disruptive spells to counter spells which trace her location, like the All-Around Reality Array. She does this by reverse-engineering the mana targeted to her, which in theory contains the life force signature of the caster. She then uses this information to target the caster from any distance.

Quotes

 * "It doesn’t matter whether it’s the king, pope, president, ministers, no matter the title, no matter who’s on the throne, I’ll fight for others. Whether it’s science or magic, these things don’t matter".
 * "I beg you, decide on a rule. Please grant my wish, allow me to have a clear benchmark and make everyone happy. A world that runs on this best rule that won’t let anyone get involved in any discord, that may lead to tragedy".