Animation Module + Phyrexian Altar + Lifecreed Duo + Heroic Feast

Animation Module

Phyrexian Altar

Lifecreed Duo

Heroic Feast

How it works

1. Gain life.
2. Heroic Feast 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, Lifecreed Duo triggers, causing you to gain life.
5. Heroic Feast triggers. Holding priority, activate Phyrexian Altar by sacrificing the Servo, adding 1.
6. Resolve the Heroic Feast trigger, putting a +1/+1 counter on a creature you control
7. Repeat from step 3.

This loop turns a simple spark of life into an unstoppable engine by chaining continuous triggers between Heroic Feast and Lifecreed Duo. Whenever you gain life, Heroic Feast places a +1/+1 counter on your creatures, which immediately wakes up Animation Module to offer a Servo token for the low price of one mana. That new token entering the battlefield causes Lifecreed Duo to reward you with more life, restarting the cycle. Phyrexian Altar acts as the ultimate enabler here, letting you effortlessly sacrifice your newly minted Servo to generate the exact mana needed to pay for Animation Module's trigger and keep the loop running indefinitely.