Dreamtail Heron
Creature — Elemental Bird
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.)
Flying
Whenever this creature mutates, draw a card.
3/4
イラスト：
Ikoria: Lair of Behemoths#47コモン英語