The Red Terror, Animation Module, Ashnod's Altar, and Weftstalker Ardent

Prerequisites

• The Red Terror on the battlefield
• Animation Module on the battlefield
• Ashnod's Altar on the battlefield
• Weftstalker Ardent on the battlefield
• available

Steps

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 to create a 1/1 Servo artifact creature token
5. When the Servo enters, Weftstalker Ardent triggers
6. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding
7. Resolve the Weftstalker Ardent triggers, dealing 1 damage to each opponent
8. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite damage
• Infinite creature tokens
• Infinite +1/+1 counters on a creature