Celebrity Fencer, Animation Module, and Ashnod's Altar

Prerequisites

• Celebrity Fencer on the battlefield
• Animation Module on the battlefield
• Ashnod's Altar on the battlefield
• You have a way to cause a creature to enter the battlefield

Steps

1. Cause a creature to enter the battlefield
2. Celebrity Fencer triggers, putting a +1/+1 counter on itself
3. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
4. The Servo enters the battlefield, triggering Celebrity Fencer
5. Holding priority, activate Ashnod's Altar by sacrificing the Servo, adding
6. Resolve the Celebrity Fencer trigger, putting a +1/+1 counter on it
7. Repeat from step 3

Results

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