Vadrok Apex of Thunder

“Mutate 1(W/U)RR <em>(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.)</em> <br> Flying, first strike <br>Whenever this creature mutates, you may cast target noncreature card with converted mana cost 3 or less from your graveyard without paying its mana cost.”