Dominion Saboteur + Ashnod's Altar

Dominion Saboteur

Ashnod's Altar

How it works

1. Activate Ashnod's Altar by sacrificing Dominion Saboteur, adding CC.
2. When Dominion Saboteur dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it. Choose to have it enter as a copy of the creature with persist with a +1/+1 counter on it.
3. Remove a +1/+1 counter and a -1/-1 counter from Dominion Saboteur as a state-based action.
4. Repeat.