Despite being considered an inferior mage by Olga Marie Animusphere, their untrained magic circuit were still of high enough quality to allow them to form Servant contracts and be converted into spiritrons for the purpose of Rayshift. However, the spells they can use, like the offensive Gandr, are dependent on the Mystic Code they wear.
The most prominent and unique skill displayed by the protagonist is the ability to form an unusually high number of contracts with Heroic Spirits servants, and to preserve these contracts for an extended period of time. Such contract is normally limited to a single servant, and for the duration of one battle. By the end of the Grand Order, the protagonist potentially maintained a contract with more than 150 servants.
The protagonist have displayed an unusual resistance to high concentration of mana and poison. It is theorized to stem from their contract with Mash Kyrielight, bearing a high poison resistance or blessing skill, neutralizing any Filth-type threat beneath the Mystic level of a Noble Phantasm. They are also shown to be immune to Suzuka Gozen's charming Mystic Eyes, but not to the God-class Mystics of Euryale's charms.