The Red Terror + Animation Module + Krark-Clan Ironworks + Terror of the Peaks

The Red Terror

Animation Module

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. The Red Terror 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 loop transforms a single creature entry into a catastrophic, self-sustaining engine by turning damage into an army. Every time a creature enters the battlefield, Terror of the Peaks deals damage to an opponent, which immediately triggers The Red Terror to grow with a +1/+1 counter. That counter placement awakens Animation Module, letting you pay a single mana to spawn a Servo artifact creature token. When that Servo enters, it triggers Terror of the Peaks all over again, and you can comfortably sacrifice the Servo to Krark-Clan Ironworks in response to fuel the Animation Module's fee while generating infinite colorless mana and infinite damage.