Everquill Phoenix

“Mutate 3R <em>(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.)</em> <br> Flying <br> Whenever this creature mutates, create a red artifact token named Feather with "1, Sacrifice Feather: Return target Phoenix card from your graveyard to the battlefield tapped."”