Power of the Mystic Titans

Power of the Mystic Titans ( ミスティックタイタンのパワーMisutikkutaitan no pawā) is a Transformation, Caster and lost magic that allows the user to take a large monstrous form of a legendary titan. This magic is considered forbidden because the user becomes a highly large and dangerous monster. Only three mages have every attempted to use this magic. The magic council has forbidden this use of magic, only during a war at the last resort or defending the innocent from death.

Description
When the user recites the incantation "I summon the power of the Mystic Ancient Titans" The user then says the name of their Mystic Titan form.

For Aria Night her titan transformation is Vianixas.

For Lissa Gem her titan transformation is Xixerisa.

For Jack Direwave his titan transformation is Levithanor.