Toothless, the Night Fury

Mutate {1}{b}{g}{u} (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.)
Trample
Whenever this creature deals combat damage to
a player, return target creature card with mutate
from your graveyard to your hand.