Animation Module + Boomer Scrapper + Thermopod

Animation Module

Boomer Scrapper

Thermopod

How it works

1. Activate Thermopod's second ability by sacrificing a creature, adding
2. When the creature leaves the battlefield, Boomer Scrapper's second ability triggers, putting a +1/+1 counter on it.
3. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
4. Repeat.

This clever loop starts when you feed a creature to Thermopod, generating red mana and sending that token to the graveyard. Because that token leaves the battlefield, Boomer Scrapper's triggered ability steps in to place a +1/+1 counter on itself, which in turn wakes up Animation Module's first ability. By spending a single mana from your pool on Animation Module's triggered prompt, you create a fresh 1/1 Servo artifact creature token ready to be sacrificed back into Thermopod, keeping the entire engine running indefinitely.