Put a +1/+1 counter on Lonis.
Lonis's first ability triggers, creating a Clue token.
When the Clue enters, Mm'menon triggers, putting a +1/+1 counter on Lonis.
Repeat from step 2.

Infinite +1/+1 counters on a creature

Infinite Clue tokens

Mm'menon, Uthros Exile

Lonis, Genetics Expert

Cast Animation Module by paying {1}.
When Animation Module enters, Mm'menon triggers, putting a +1/+1 counter on Crystalline Crawler.
Animation Module triggers. Holding priority, activate Crystalline Crawler by removing a +1/+1 counter from it, adding {1}.
Resolve the Animation Module trigger, causing you to pay {1} to create a 1/1 Servo artifact creature token.
When the Servo enters, Mm'menon triggers, putting a +1/+1 counter on Crystalline Crawler.
Repeat from step 3.

Infinite creature tokens

Infinite ETB

Animation Module

Crystalline Crawler

Activate Goblin Bombardment by sacrificing Lesser Masticore.
When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Lesser Masticore enters, Mm'menon triggers, putting a +1/+1 counter on Lesser Masticore.
Resolve the Goblin Bombardment ability.
Repeat.

Infinite LTB

Infinite sacrifice triggers

Infinite death triggers

Infinite damage

Lesser Masticore

Goblin Bombardment

Activate Warren Soultrader by paying 1 life and sacrificing the persist creature.
When the persist creature dies, its persist ability and Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel trigger.
Resolve the persist trigger, returning the persist creature from your graveyard to the battlefield with a -1/-1 counter on it.
Resolve the Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel trigger, causing target opponent to lose 1 life and 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.

Infinite colored mana

Infinite lifegain triggers

Infinite lifeloss

Infinite Treasure tokens

Persist Creature

Warren Soultrader

Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel

Activate Warren Soultrader by paying 1 life and sacrificing the persist creature.
When the persist creature dies, its persist ability and Elas il-Kor's second ability trigger.
Resolve the Elas il-Kor trigger, causing each opponent to lose 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, Elas il-Kor's first ability 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.

Elas il-Kor, Sadistic Pilgrim

Combos with "Mm'menon, Uthros Exile"