Sharuum the Hegemon, Rescue Skiff, and Extruder

Prerequisites

• Sharuum the Hegemon on the battlefield
• Rescue Skiff in hand
• Extruder on the battlefield
• available

Steps

1. Cast Rescue Skiff by paying
2. When Rescue Skiff enter the battlefield, it triggers, targeting Sharuum
3. Holding priority, activate Extruder by sacrificing Rescue Skiff
4. Resolve the Rescue Skiff trigger, returning Sharuum from your graveyard to the battlefield
5. When Sharuum enters the battlefield, it triggers, targeting Rescue Skiff
6. Holding priority, activate Extruder by sacrificing Sharuum
7. Resolve the Sharuum trigger, returning Rescue Skiff from your graveyard to the battlefield
8. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters