Feral Ghoul + Animation Module + Phyrexian Altar

Feral Ghoul

Animation Module

Phyrexian Altar

How it works

1. Activate Phyrexian Altar by sacrificing an additional creature, adding 1.
2. When the creature dies, Feral Ghoul's first 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.
5. Once you have infinite +1/+1 counters on Feral Ghoul, you may sacrifice it to give opponents infinite rad counters, which will cause them to mill their library and lose a large amount of life during their next precombat main phase.

This loop turns a simple cycle of sacrifice and rebirth into an escalating engine of growth and radiation. By feeding a creature to Phyrexian Altar, you generate the exact mana needed to fuel Animation Module's triggered ability every single time Feral Ghoul grows stronger from a +1/+1 counter placement. Each iteration of this cycle spawns a fresh Servo artifact creature token to take its turn on the altar, continuously pumping the surviving Feral Ghoul to astronomical power. Once you have built up infinite +1/+1 counters, a final sacrifice of the Ghoul triggers its death ability to blanket your opponents in infinite rad counters, dooming them to mill their libraries and lose massive amounts of life.