Roman Catholic Church

The Roman Catholic Church is the world's largest Christian organization, boasting a number of 20 million worshippers, spanning across 113 countries. It is one of the three major powers of the world, along with the Anglican Purist Church and Academy City. Their central base is the Vatican City State, protected by a barrier that incorporates a magical formation that involves 90% of the buildings in Rome, and a 'lock' that changes every hour, a security which supposedly not even Index-Librorum-Prohibitum can break through

The "Ten Holy Artifacts/Rites"
Here are some of the most powerful weapons the Roman Catholic Church has in their possession, though not all ten are shown yet in the novels.

Gregorian Chant
A weapon similar to orbital bombardment, where 3,333 monks chant from holy scriptures and focus the energy into a beam that can strike almost anywhere on Earth. Said to be the Roman Catholic Church's ultimate weapon, until one of its strikes got reflected back by Auroleus Izzard's Ars Magna in volume 2 of the novels and is destroyed.

Also referred to as "Gregorio's Chant", using the Italian translation for Gregory, "Gregorio". The term is originally used for a form of liturgical music in Western Christianity Masses and rituals as primary accompaniment.

Pietro's Cross
Mistaken for the "Stab Sword" in Volume 9, and revealed to what it really is in Volume 10, it's a artifact that 'changes both the spiritual and physical aspects of the land it was raised to be beneficial to the Roman Catholic Church in every way'. Named after one of the 12 Apostles, and the artifact that created the Vatican to what it is now when it was raised after Pietro's Death. The 'Stab Sword' that it was mistaken for never existed, just a propaganda made by the RCC as another layer of defence to protect this artifact. Supposedly shattered when it fell out of a plane and into the sea at the end of volume 10. Also called as "The Cross of St. Peter".

Originally, the Cross, also known as the Petrine Cross, is an inverted Latin cross traditionally used as a Christian symbol, but in recent times also used widely and incorrectly as an anti-Christ symbol, a common misconception.

Queen of the Adriatic Sea
Made during the period where Rome and Venice were separate states and are hostile towards each other. This artifact has a guardian armada of ice ships that are unlimited in number as long as the Adriatic Sea doesn't run dry. The real form is a magical attack that's similar to the judgment of 'Power of God' (Gabriel) that destroyed the city of Heretics (probably Sodom and Gomorrah), that if used would completely destroy Venice and all it's traces from history, including it's art and people. In Volume 11 the Roman Catholic Church attempted to remodel this artifact so that it can target somthing apart from Venice, namely Academy City, but were stopped by a group consisting of Kamijou Touma, Index, Ursula Aquinas and the Amakusa Church. Destroyed by Kamijou Touma in Volume 11, when he destroyed the core crucifix in his fight with the main antagonist of that volume, Bishop Biagio Buzoni.

Ironically, the term "Queen of the Adriatic (Sea)" is sometimes used to refer to the Italian city Venice.

Document of Constantine
Also known as the C-Document, it's power is "to make whatever the Pope says seem to be the absolute truth", and the cause of general unrest around the world in volume 14. Destroyed by Kamijou Touma in Volume 14.

A similar piece of documents relating to the Holy Roman Emperor Constantine I, the "Donation of Constantine", supposedly transferred authority over Rome and the western part of the Roman Empire to the pope. This, however, is a forgery dating between the 8th and 9th Centuries CE.

Other Notable Aspects

 * The Roman Catholic Church also possesses the Book of the Law, a grimoire written by the most renowned magician in his time, Aleister Crowley.
 * The Roman Catholic Church also have magical Knights, an idea borrowed from the Knights of England. Necessarius member Stiyl Magnus remarked they are second-rate amateurs compared to the originals.