Animation Module + Krark-Clan Ironworks + Wildwood Mentor

Animation Module

Krark-Clan Ironworks

Wildwood Mentor

How it works

1. Put a +1/+1 counter on a creature you control.
2. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
3. When the Servo enters the battlefield, Wildwood Mentor's first ability triggers.
4. Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding CC.
5. Resolve the Wildwood Mentor trigger, putting a +1/+1 counter on it.
6. Repeat from step 2.
7. Once you have infinite mana, you may forego sacrificing the Servos.

This clever loop relies on Animation Module to bridge the gap between your artifacts and your creatures, turning a single +1/+1 counter into a self-sustaining engine. When Wildwood Mentor's trigger places a counter on itself, Animation Module triggers in response, letting you pay a mana to create a Servo artifact creature token. That new token arrival feeds right back into Wildwood Mentor, but before that counter can even resolve, Krark-Clan Ironworks steps in to sacrifice the Servo for two colorless mana—easily funding the Module's upkeep while netting you a surplus of colorless mana.