Cloudpiercer

Cloudpiercer

Creature - Dinosaur | Power/Toughness: 5 / 4 (CMC 5)
Mutate (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.)
Reach
Whenever this creature mutates, you may discard a card. If you do, draw a card.