Animation Module + War Elemental + Krark-Clan Ironworks + Terror of the Peaks

Animation Module

War Elemental

Krark-Clan Ironworks

Terror of the Peaks

How it works

1. Cause a creature to enter the battlefield under your control.
2. Terror of the Peaks 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, Terror of the Peaks triggers.
6. Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding CC.
7. Resolve the Terror of the Peaks trigger, dealing 1 damage to an opponent.
8. Repeat from step 3.

This elegant loop hinges on Terror of the Peaks to translate any creature entering the battlefield into damage against an opponent, which immediately awakens War Elemental to grow larger with +1/+1 counters. Each counter placed on War Elemental then triggers Animation Module, allowing you to pay a single mana to spawn a 1/1 Servo artifact creature token. That new token enters to restart the terror, and by feeding the Servo to Krark-Clan Ironworks along the way, you easily generate the mana needed to sustain the module's endless cycle while turning every loop into unbounded damage and colorless mana.