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, Auriok Champion triggers, causing you to gain 1 life.
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 clever loop turns the cycle of life and death into an endless engine of wealth and growth. By feeding a persist creature to Warren Soultrader, you generate a Treasure token while the creature immediately resurrects itself with a -1/-1 counter, cushioned by the life-gaining safety net of Auriok Champion. As that Treasure enters the battlefield, Mm'menon, Uthros Exile notices the new artifact and places a +1/+1 counter on the creature, gracefully neutralizing its -1/-1 counter so the entire process can repeat indefinitely for infinite Treasures, life, and triggers.