The Red Terror + Animation Module + Phyrexian Altar + Weftstalker Ardent

The Red Terror

Animation Module

Phyrexian Altar

Weftstalker Ardent

How it works

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