Szarel, Genesis Shepherd + Animation Module + Sword of the Meek + Ashnod's Altar + Umbral Collar Zealot

Szarel, Genesis Shepherd

Animation Module

Sword of the Meek

Ashnod's Altar

Umbral Collar Zealot

How it works

1. Activate Umbral Collar Zealot by sacrificing Sword of the Meek.
2. When you sacrifice Sword of the Meek, Szarel triggers, putting a number of +1/+1 counters on another creature you control.
3. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
4. When the Servo enters the battlefield, Sword of the Meek triggers, returning itself from your graveyard to the battlefield attached to the Servo.
5. Resolve the Umbral Collar Zealot ability.
6. Activate Ashnod's Altar by sacrificing the Servo, adding CC.
7. Repeat.

This ingenious loop turns a modest sacrifice into an unstoppable engine, fueled by Szarel, Genesis Shepherd's ability to trigger whenever you sacrifice your assets. By feeding Sword of the Meek to Umbral Collar Zealot or Ashnod's Altar, you bin the sword only for Animation Module to spit out a fresh 1/1 Servo artifact creature token the moment Szarel's counters land; that new token instantly triggers the sword to recur itself right back to the battlefield. Ashnod's Altar conveniently funds the Animation Module's fee with the mana generated from sacrificing your creatures, leaving you with an infinite cascade of triggers, counters, and colorless mana.