Ruler's powers and abilities
As the world’s most famous female saint, Jeanne d'Arc left her village at the age of seventeen, and two years later indelibly carved her name into history when she was burned at the stake. She is the saint who saved France by accomplishing a miraculous military offensive, only to meet a tragic end shortly thereafter.[4] As a Heroic Spirit, she has qualifications to be summoned in the Ruler and Saber Class.[2] Under the Ruler class, she is a special Heroic Spirit summoned by the Holy Grail itself to act as the administrator of the Holy Grail War. Any Servants participating the Holy Grail War can learn identity and information, however information on the Ruler is strictly confidential, there are many mysteries in its presence. In the Great Holy Grail War, several of her abilities as aren’t functioning correctly due to the existence of the previous Ruler.
She has a unique ability that allows her to scan around her position from a wide range within 10 kilometers radius. The scan allows her to search for servants' positions which can even overcome Assassin's Presence Concealment ability. One of the many privileges afforded to the manager of the War is the function of locating Servants. As she dips her right hand into the holy water and casts it into the air the water gives a dim glow and then begins to smoothly draw a three-dimensional map. Ruler’s perception ability exceeded that of the Spirit Board (霊器盤, Reikiban?). When Siegfried committed suicide, she could affirm that Siegfried had not completely disconnected with this world. It was unclear where exactly he was, but—in any case, he should still be alive. When Sieg used his Dead Count Shapeshifter, she can sense Siegfried from a dying state to be alive and active.
Skills
Class Skills
Magic Resistance (EX Rank): In addition to the Magic Resistance of the Saber Class, she demonstrates a high anti-magic from her unwavering piety. However, since it is just averting (evading) the Magecraft, only Jeanne will be saved against a wide-range magic attack. It cannot cope with the sacraments of the Church.[1][2] At this rank, Jeanne can't be wounded even by magecraft from the Age of Gods. However, this resistance only turns spells away from her. In other words, it doesn't negate them. Semiramis's lightning spell attack was suppressed, not a single spot, but an entire area had been diverted away without injuring her. The strike, which should have had a will of its own, had lost its malice. Instead, the lightning attacked the surrounding area.
True Name Discernment (B Rank): When summoned as a Ruler, status information such as the true identity, Skill and Parameters is automatically revealed when she directly encounters a Servant. However Servants with hiding capacity depend on her luck level to bypass this.[1]
God's Resolution (A Rank): As a privilege of the Ruler Class, Jeanne d'Arc has two Command Spells that can be used for each Servant participating in the Holy Grail War. However, she cannot re-purpose other Command Spells that had been previously used.[1] When the nameless vampire previously known as Vlad III and Darnic Prestone Yggdmillennia abandoned his existence as a Servant, this skill was no longer able to restrain him. As such, Ruler deemed him the greatest threat that could destroy the Holy Grail War and she used her privilege to force a truce with the black and red faction Servants to eradicate the vampire.
Personal Skills
Revelation (A Rank): A Skill equivalent to "Instinct". Instinct is a sixth sense regarding battles, but "Revelation" accommodates all matters related to the achievement of a goal (for instance, choosing the most suitable path while traveling). Because there is no basis (so she thinks), it cannot be explained well to others.[1][2]
Charisma (C Rank): The natural talent to command an army. Jeanne's figure participating in the assaults hoisting a flag raised the morale of the soldiers to the limit and united the troops. Thanks to her charisma, it is possible to make others believe in the contents of the "revelations" without basis.[1][2] She can make others believe her words due to her status as Ruler, differing from suggestion magecraft in that she only has to forcefully assert her point to regular humans for them to acquiesce. She persuaded her teachers and friends that she must go on a journey and made them understand that it was absolutely necessary.
Saint (B Rank): Indicates being acknowledged as a saint. When summoned as a Servant, the ability of saint is selected one among "raising the effectiveness of sacraments", "automatic HP recovery", "1 Rank-Up to Charisma" and "production of a holy shroud" is possible.[1][2]
Noble Phantasms
By brandishing her holy flag, Jeanne can activate her Luminosité Eternelle Noble Phantasm, by converting her EX rank Magic Resistance skill into an equally powerful defense that blocks all physical attacks. It is the crystallization of the legend of Jeanne d’Arc waving her flag on the battlefield and fighting to the very end with hardly any wounds. However, each time she uses it, she accumulates damages, so naturally, she can’t withstand an Anti-Fortress Noble Phantasm multiple times in a row. Incidentally, Jeanne uses this flag mostly to attack in battle.[35]
Jeanne also has access to La Pucelle, a conceptual crystallization weapon interpreted as her burning at the stake in an attack-like fashion.[1][2] It is a variant of Reality Marble that crystallizes the mental landscape of the user into a sword in the form of flames.[1][2][4] After the battle in which this Noble Phantasm was manifested, Jeanne will be extinguished.[1][2] In exchange for her life, she gains access to pure destructive power that cannot be calculated, which allows her to annihilate anything in existence. However, these flames only destroy that which she considers a dangerous threat that must be destroyed. In other words, this Noble Phantasm cannot be used against simply a strong enemy or out of emotions like hate.[36]
Summoning
Ruler is possessing a human body, an unprecedented summoning with a very weak link to the current world, so she has a number of irregularities that do not plague regular Servants. She has the physical abilities of a Servant, but since she is linked to a physical human body through the realm of the unconscious, she has to carry on her life as a normal human. She cannot turn into spiritual form, and she must deal with the body's needs of hunger and sleep. Ruler kept a backup of Laeticia's body. When she achieved her objective or if she was killed midway through the war, at that instant, Laeticia's body would return to its original form as recorded in the backup and, depending on the situation, would be forcefully transported somewhere safe. With that process, no matter how many wounds this body received, it would immediately regenerate.
