Evolutia, God of Abominations

Mutate {w}{u}{b}{r}{g} (If you cast this spell for its
mutate cost, put it over or under target non-
Human creature you own. They mutate into the
creature on top plus all abilities from under it.)
Indestructible
Non-Human creatures in your graveyard all gain Mutate {w}{u}{b}{r}{g}.
Creatures with Mutate can be cast from your graveyard for their mutate cost.
"She made her creations, so that one day they may become one."