Moritte of the Frost + Lesser Masticore + Ashnod's Altar

Moritte of the Frost

Lesser Masticore

Ashnod's Altar

How it works

1. Activate Ashnod's Altar by sacrificing Moritte of the Frost, adding CC.
2. Moritte of the Frost dies, triggering its persist ability, returning it to the battlefield as a copy of Lesser Masticore with two +1/+1 counters and one -1/-1 counter on it.
3. Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.
4. Repeat.
5. Once you have infinite mana, you may activate Lesser Masticore's ability any number of times to deal infinite damage to any creature(s).