Warren Soultrader | Mm'menon, Uthros Exile | Angelic Chorus (and one other card)

Persist Creature

Cards

All permanents on the battlefield (Persist Creature without a -1/-1 counter on it).

Activate
Warren Soultrader by paying 1 life and sacrificing the Persist Creature.
When the Persist Creature dies, its persist ability triggers, returning the Persist Creature from your graveyard to the battlefield with a -1/-1 counter on it.
When the Persist Creature enters,
Angelic Chorus triggers, causing you to gain life equal to the creature's toughness.
Resolve the
Warren Soultrader ability, creating a Treasure token.
When the Treasure enters,
Mm'menon triggers, putting a +1/+1 counter on the Persist Creature.
Repeat.

This combo results in infinite lifegain if the creature has 2 or more toughness once its returned to the battlefield with a -1/-1 counter on it.

This combo has been estimated to be Exhibition (Bracket 1+).