Mind Eater

Ruby: Mind Eater is a spell is used to control people. The person on whom the spell has been cast cannot break the spell by themself, so another person would have to break the spell for them. The only known people who can use this spell are Konoe Mercury and Phantom, further hinting that the two are one and the same.

Notable victims

 * Yūki Terumi (during the First War of Ars Magus; set free by Trinity Glassfield)
 * Tsubaki Yayoi (during the course of BlazBlue: Chronophantasma, set free by the Sealed Weapon Izayoi when it takes on its true form.)