Animation Module + Krark-Clan Ironworks + Auriok Champion + The Destined White Mage
Animation Module
Krark-Clan Ironworks
Auriok Champion
The Destined White Mage
Infinite +1/+1 counters on creatures you controlInfinite creature ETBInfinite creature LTBInfinite colorless manaInfinite death triggersInfinite lifegainInfinite lifegain triggersInfinite creature sacrifice triggers
How it works
Gain life.
The Destined White Mage triggers, putting a +1/+1 counter on a creature you control.
Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
When the Servo enters, Auriok Champion triggers, causing you to gain life.
The Destined White Mage triggers. Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding CC.
Resolve the The Destined White Mage trigger, putting a +1/+1 counter on a creature you control
Repeat from step 3.
This delightful loop spins entirely out of a single initial instance of life gain, which awakens The Destined White Mage to place a +1/+1 counter on your creature. That counter immediately tickles Animation Module's triggered ability, allowing you to pay a single mana to mint a fresh 1/1 Servo artifact creature token. As that Servo touches the battlefield, Auriok Champion cheerfully rewards you with more life, looping right back into The Destined White Mage. Finally, Krark-Clan Ironworks sits waiting in the wings to feed that very same Servo to the graveyard, converting the token into the raw colorless mana needed to keep Animation Module's fee permanently paid.