Woodfall Primus + Melira, Sylvok Outcast + Ashnod's Altar
Melira, Sylvok Outcast
All permanents on the battlefield. Woodfall Primus does not have a -1/-1 counters on it.
- Activate Ashnod's Altar by sacrificing Woodfall Primus, adding
- Woodfall Primus's persist ability triggers, returning it to the battlefield
- Woodfall Primus enters the battlefield, triggering its ability
- Holding priority, repeat an arbitrarily large number of times
- Resolve all Woodfall Primus abilities, destroying any number of noncreature permanents
Destroy any number of noncreature permanents. Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite colorless mana.