Activate Warren Soultrader by paying 1 life and sacrificing the persist creature.
When the persist creature dies, its persist ability and Daxos trigger.
Resolve the Daxos trigger, causing you to gain 1 life.
Resolve the persist trigger, returning the persist creature from your graveyard to the battlefield with a -1/-1 counter on it.
When the persist creature enters, Daxos 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 ingenious engine transforms the recursive loop of a persist creature into a self-sustaining machine by leveraging Warren Soultrader to convert your doomed creature into a steady stream of Treasure tokens. While Warren Soultrader provides the sacrifice outlet and mana generation, Daxos, Blessed by the Sun acts as your vital lifeline, restoring the life paid for the activation each time the creature enters or dies. Finally, Mm'menon, Uthros Exile watches the resulting artifacts enter the battlefield and cancels out the creature's crippling -1/-1 counters with fresh +1/+1 counters, allowing the cycle to repeat indefinitely for boundless resources and lifegain.