Animation Module + Ashnod's Altar + Sunbond + Aunt May
Animation Module
Ashnod's Altar
Sunbond
Aunt May
Infinite creature LTBInfinite creature ETBInfinite creature sacrifice triggersInfinite death triggersInfinite colorless manaInfinite lifegain triggersInfinite lifegainInfinite +1/+1 counters on creatures you control
How it works
Gain life.
The creature with Sunbond attached triggers, putting a +1/+1 counter on it.
Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
When the Servo enters, Aunt May triggers, causing you to gain life.
The creature with Sunbond attached triggers. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding CC.
Resolve the trigger from the creature with Sunbond attached, putting a +1/+1 counter on it
Repeat from step 3.
This clever loop starts with Aunt May, whose presence turns every new creature entering your battlefield into a neat little burst of life. That life gain fuels Sunbond, which is enchanted to a creature to transform every point of gained life into a +1/+1 counter. That counter placement immediately wakes up Animation Module, letting you pay a single mana to birth a fresh Servo token. The new Servo triggers Aunt May all over again to keep the cycle going, while Ashnod's Altar steps in to quietly convert those same Servos into the colorless mana you need to keep paying Animation Module's tax.