Animation Module + Scion of the Swarm + Ashnod's Altar + Soul Warden

Animation Module

Scion of the Swarm

Ashnod's Altar

Soul Warden

How it works

1. Cause a creature to enter the battlefield under your control.
2. Soul Warden triggers, causing you to gain 1 life.
3. Scion of the Swarm triggers, putting a +1/+1 counter on itself.
4. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
5. When the Servo enters the battlefield, Soul Warden triggers.
6. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding CC.
7. Resolve the Soul Warden trigger, causing you to gain 1 life.
8. Repeat from step 3.

This brilliant engine turns a simple life gain event into an unstoppable cycle of growth and resources. As your board expands, Soul Warden continuously fuels Scion of the Swarm with +1/+1 counters upon every entry. Each counter deposited onto the Scion triggers Animation Module, giving you the opportunity to pay a single generic mana to mint a fresh Servo artifact creature token. Ashnod's Altar then provides the necessary mana to sustain this loop by sacrificing that very same Servo, while also generating an excess of colorless mana to power your victories.