Sharuum the Hegemon, Rescue Skiff, and Grinding Station

Prerequisites

• Sharuum the Hegemon on the battlefield
• Rescue Skiff in hand
• Grinding Station on the battlefield
• available

Steps

1. Cast Rescue Skiff by paying
2. When Rescue Skiff enter the battlefield, it and Grinding Station trigger, with Rescue Skiff targeting Sharuum
3. Resolve the Grinding Station trigger, untapping it
4. Holding priority, activate Grinding Station by tapping it and sacrificing Rescue Skiff
5. Resolve the Rescue Skiff trigger, returning Sharuum from your graveyard to the battlefield
6. When Sharuum enters the battlefield, it and Grinding Station trigger, with Sharuum targeting Rescue Skiff
7. Resolve the Grinding Station trigger, untapping it
8. Holding priority, activate Grinding Station by tapping it and sacrificing Sharuum
9. Resolve the Sharuum trigger, returning Rescue Skiff from your graveyard to the battlefield
10. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill