Animation Module + Ashnod's Altar + Cleric Class + Soul Warden

Animation Module

Ashnod's Altar

Cleric Class

Soul Warden

How it works

1. Gain life.
2. Cleric Class triggers, putting a +1/+1 counter on a 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, Soul Warden triggers, causing you to gain life.
5. Cleric Class triggers. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding CC.
6. Resolve the Cleric Class trigger, putting a +1/+1 counter on a creature you control.
7. Repeat from step 3.

This loop turns a single instance of lifegain into a self-sustaining engine by chaining together triggers across your board. With Cleric Class at level 2 or higher, any life gained—boosted by its passive life-increment effect—triggers a +1/+1 counter onto a creature, which in turn fires off Animation Module to let you buy a Servo token for a single mana. The arrival of that new token prompts Soul Warden to give you back life, restarting the cycle, while Ashnod's Altar stands ready to sacrifice the Servo for two colorless mana to fund the Animation Module's fee and net you infinite resources.