Thran Vigil + Hammerhead, Maggia Boss

Thran Vigil

Hammerhead, Maggia Boss

How it works

1. Activate Hammerhead by sacrificing the creature with persist.
2. When that creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Thran Vigil triggers, putting a +1/+1 counter on that creature.
4. Remove a +1/+1 counter and a -1/-1 counter from that creature as a state-based action.
5. Resolve the Hammerhead ability from step 1.
6. Repeat.