Kirby, Unleashed

Mutate {c}{w}{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 under it.).
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{u}: gain Flying until end of turn.
{c}{t}: Exile this creature and all the cards attached
to it. If you do, you can cast Kirby, Unleashed
from exile to your battlefield.