Animation Module + Phyrexian Altar + Sandbender Scavengers

Animation Module

Phyrexian Altar

Sandbender Scavengers

How it works

1. Activate Phyrexian Altar by sacrificing any other creature you control, adding 1.
2. Sandbender Scavengers 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 loop turns a simple sacrifice into an infinite mechanical engine by feeding on its own byproduct. When you sacrifice a creature to Phyrexian Altar, Sandbender Scavengers catches the loss with a +1/+1 counter, which in turn wakes up Animation Module to pay for the mana you just generated. That triggered counter gives you a fresh Servo token right back into play, ready to be fed back into the Altar to repeat the entire sequence.