Le Grimoire du Pape Honorius
In God's Name I Bind Thee, Foul Spirit
Rank: B+
Type: Anti-Spirit
The famous grimoire Caster allegedly penned, containing all his knowledge on summoning and binding spirits. As the ability to summon spirits is already subsumed under Caster's
Summoning Skill, this Noble Phantasm instead crystallizes his authority to bind them. When Caster recites the grimoire's true name and opens it, chains of ethereal golden light emerge from its pages and shoot out to bind the targeted spirit.
The chains then vanish from sight, as this binding is spiritual rather than physical. They don't serve to bind the target's physical manifestation, but their spiritual container (Saint Graph). Depending on the strength of the spirit being restrained, they may suffer multiple rank down to their parameters and sealing of certain Skills and Noble Phantasms.
If the spirit is weakened enough Caster will even be able to drag them inside the grimoire and seal them away. This spells instant death for any spiritual being. Normal spirits will be passed along in the cycle of reincarnation at this point, while Heroic Spirits will be returned to the Throne. However, fellow Servants are far too strong for Caster to seal away normally.
Thus he'd have to first bring them to the brink of death before sealing them, making this technique only useful as a finishing move.
Armus Peregrinus
In God's Will I Declare War
Rank: C
Type: Anti-Unit (Self)
A Noble Phantasm crystallizing Caster's declaration of the Fifth Crusade to reclaim the Holy Land in Jerusalem. Upon invoking this Noble Phantasm Caster re-affirms his will to seize his ideals by force, transforming his saint graph into a more martial one. Caster becomes encased in a heavenly suit of silvery armor and a massive broadsword materializes in his hand, heavily ornamented and shining with divine authority.
In this form Honorius undergoes a Class-shift to Saber, obtaining the Skills
Magic Resistance (A) and
Riding (C). His physical parameters change to reflect those of a prototypical Saber, gaining Strength- A, Agility- B and Endurance- B. Luck and Mana are unaffected. He can also expel bursts of holy light from his sword and armor, serving to temporarily blind opponents and sear flesh at close range.
Due to the strain on his saint graph, Honorius can only maintain this Noble Phantasm for a few minutes at a time. Afterwards he'll have to de-activate it to conserve Mana.
Ex Cathedra
In God's Grace I Speak Truth
Rank: EX
Type: Anti-World
A Noble Phantasm not born from Caster's own feats, but one all Pope Heroic Spirits would possess. The matchless divine authority bequeathed to anyone who holds the office of Pope, empowering them to issue commands that define "reality" for all their followers. Caster can invoke this Noble Phantasm any time he makes a declaration, merely by adding the words
"In the name of God I speak the truth". Reality itself will then be rewritten to make Caster's declaration true, as long as it's consistent with the doctrines of the Church and the teachings of St. Peter.
Normally a miracle like this would demand unimaginably more Mana than Caster is capable of, but the Mana cost is distributed amongst the billions of believers across the world who affirm Caster's authority. Even so, invoking this Noble Phantasm once utterly drains Caster's Mana, insuring he vanishes from the World immediately after.
Essentially, this Noble Phantasm allows Caster to perform a single miracle on the level of True Magic at the expense of his own life.