Miriel Faldareus

+2: Target non-zombie creature gets a contract counter with "When this creature dies return it to the battlefield under your control as Zombie"
0: Miriel Faldareus becomes a 4/5 creature with flying, indestructible, and lifelink until the end of turn
-10: Destroy all creatures, then return all creatures from all graveyards to your battlefield. *Miriel Faldareus can be your commander*