Biollante, Plant Beast Form

Mutate {4}{g/w}{b}{b} (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.)
Deathtouch, lifelink

Whenever this creature mutates, return any
number of target creature cards with total
power 10 or less from your graveyard to the
battlefield.