Vraska, Golgari Vengeance

+1: Create a 1/1 Assassin creature token with "Sacrifice Assassin token in place of target creature."
-3: All creatures on owner's battlefield gain Deathtouch. If creature already has Deathtouch, they gain Menace until end of turn.
-10: Destroy all creatures. Put Vraska, Golgari Vengeance in exile.