Animation Module + Scion of the Swarm + Krark-Clan Ironworks + Soul's Attendant
Animation Module
Scion of the Swarm
Krark-Clan Ironworks
Soul's Attendant
Infinite +1/+1 counters on a creatureInfinite colorless manaInfinite creature tokensInfinite death triggersInfinite creature ETBInfinite lifegainInfinite lifegain triggersInfinite creature LTBInfinite creature sacrifice triggers
How it works
Cause a creature to enter the battlefield under your control.
Soul's Attendant triggers, causing you to gain 1 life.
Scion of the Swarm triggers, putting a +1/+1 counter on itself.
Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
When the Servo enters the battlefield, Soul's Attendant triggers.
Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding CC.
Resolve the Soul's Attendant trigger, causing you to gain 1 life.
Repeat from step 3.
This clever loop uses Soul's Attendant as your life-gain anchor whenever a creature enters, which in turn triggers Scion of the Swarm to grow with a +1/+1 counter. That counter placement awakens Animation Module, letting you spend a fraction of your resources to churn out a fresh Servo token. By feeding that very same Servo directly into Krark-Clan Ironworks, you generate the raw mana needed to sustain Animation Module's fee while netting infinite resources across the board.