Elspeth, Oath-Breaker

+1: Until the next turn, during each combat phase you may have Elspeth, Oath-Breaker deals 3 damage to up to one attacking creature.
0: Until end of turn, Elspeth, Oath-Breaker becomes a 4/4 Zombie Knight creature with haste and indestructible that's still a planeswalker.
-8: Destroy all creatures, then return all cards in your graveyard destroyed this way to the battlefield. They gain haste until end of turn.