Xavier Sal, Infested Captain + Animation Module + Thornbite Staff + Crystalline Crawler

Xavier Sal, Infested Captain

Animation Module

Thornbite Staff

Crystalline Crawler

How it works

1. Activate Xavier Sal's second ability by tapping it and sacrificing a creature.
2. When the creature dies, Xavier Sal triggers, untapping Xavier Sal.
3. Resolve the Xavier Sal ability from step 1, putting a +1/+1 counter on Crystalline Crawler.
4. Animation Module triggers, holding priority, activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding 1.
5. Resolve the Animation Module trigger, causing you to pay 1 to create a 1/1 Servo artifact creature token.
6. Repeat.
7. If you control another creature with a +1/+1 counter on it, you will get infinite +1/+1 counters among creatures you control, and you may instead use Xavier Sal's first ability to get infinite copies of creature tokens you control.

This intricate loop turns Xavier Sal, Infested Captain into a relentless engine of growth and creation, heavily accelerated by the passive and activated abilities of the other artifacts. By equipping Thornbite Staff to the Captain—who happily enters as a Shaman to instantly grab the equipment—sacrificing a creature triggers a deadly untap loop that feeds the Captain's sacrifice-and-proliferate ability. Crystalline Crawler acts as the ultimate battery, converting its own internal counters into the mana needed to sustain Animation Module's trigger, which replaces every new counter with a fresh 1/1 Servo artifact creature token. Ultimately, this synergy lets you cycle sacrifices and counters effortlessly, flooding the board with infinite creature tokens and endless triggers.