Demonlord of Ashmouth

Demonlord of Ashmouth

Creature - Demon | Power/Toughness: 5 / 4 (CMC 4)
Flying
When Demonlord of Ashmouth enters the battlefield, exile it unless you sacrifice another creature.
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)