The Red Terror + Animation Module + Phyrexian Altar + Warleader's Call

The Red Terror

Animation Module

Phyrexian Altar

Warleader's Call

How it works

1. Cause a creature to enter the battlefield under your control.
2. Warleader's Call triggers, dealing 1 damage to each opponent.
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, Warleader's Call triggers.
6. Holding priority, activate Phyrexian Altar by sacrificing the Servo, adding 1.
7. Resolve the Warleader's Call triggers, dealing 1 damage to each opponent.
8. Repeat from step 3.