Animation Module + War Elemental + Ashnod's Altar + Warstorm Surge

Animation Module

War Elemental

Ashnod's Altar

Warstorm Surge

How it works

1. Cause a creature to enter the battlefield under your control.
2. Warstorm Surge triggers, dealing damage to an opponent equal to the creature's power.
3. War Elemental's second ability 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, Warstorm Surge triggers.
6. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding CC.
7. Resolve the Warstorm Surge trigger, dealing 1 damage to an opponent.
8. Repeat from step 3.

This loop begins the moment a creature enters the battlefield, triggering Warstorm Surge to deal damage to an opponent and waking up War Elemental to grow larger with new +1/+1 counters. That growth instantly sparks Animation Module's first ability, allowing you to pay a mana to create a 1/1 Servo artifact creature token that immediately feeds the cycle by entering the battlefield and triggering Warstorm Surge all over again. To keep the mana flowing, Ashnod's Altar steps in as the engine's fuel source, letting you sacrifice that freshly made Servo for colorless mana to pay the Animation Module's fee, sustaining an infinite chain of damage, tokens, and growth.