Animation Module, Cathars' Crusade, and Krark-Clan Ironworks

Prerequisites

• Animation Module on the battlefield
• Cathars' Crusade on the battlefield
• Krark-Clan Ironworks on the battlefield
• You have a way to put a +1/+1 counter on a creature you control
• available

Steps

1. Put a +1/+1 counter on any creature you control
2. Animation Module triggers, causing you to pay to create a 1/1 Servo artifact creature token
3. The Servo enters the battlefield, triggering Cathars' Crusade
4. Holding priority, activate Krark-Clan Ironworks by sacrificing the Servo, adding
5. Resolve the Cathars' Crusade trigger, putting a +1/+1 on each creature you control
6. Animation Module triggers for each +1/+1 counter placed this way
7. Resolve all but one Animation Module trigger, choosing not to pay
8. Resolve the final Animation Module trigger, causing you to pay to create a 1/1 Servo artifact creature token
9. Repeat from step 3

Results

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