Ydrisile, The Mutator

Adaptive (This Card can be the target of mutate creature spells, and can gain mutate from other spells and abilities)
Forced Mutation {x}{r}{g} (X non-human creature cards without mutate gain mutate, with a mutate cost equal to their mana cost)
{t}: Sacrifice Ydrisile, The Mutator. Activate Ydrisile's Forced Mutation before this card leaves the battlefield, where {x}= the converted mana cost spent to cast Ydrisile, The Mutator.