Vorak, the Vile Spawn

+1: Create a 1/1 green Ankheg Insect creature token with Wither. Then populate.
-3: Destroy target artifact, creature or land. Then create two 1/1 green Ankheg Insect creature tokens with Wither. Then populate.
-6: Emblem: "Whenever you cast a spell, create a 1/1 green Ankheg Insect creature token with Wither, then populate. All your Ankhegs have flying."