Karalox, Apex of Frost

Mutate {w}{u/r}(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.)
_________________________________________
Whenever this creature mutates, tap target
creature an opponent controls. If it's power
was greater than this creature's power,
draw a card.