Optimus Prime, Hero // Optimus Prime, Autobot Leader, Luminous Broodmoth, and Grinding Station

Prerequisites

• Optimus Prime, Hero // Optimus Prime, Autobot Leader on the battlefield
• Luminous Broodmoth on the battlefield
• Grinding Station on the battlefield
• It is your turn

Steps

1. Activate Grinding Station by tapping it and sacrificing Optimus Prime, Hero
2. When Optimus Prime, Hero dies, its second ability triggers, returning it from your graveyard to the battlefield as Optimus Prime, Autobot Leader
3. When Optimus Prime, Autobot Leader enters the battlefield, Grinding Station triggers, untapping Grinding Station
4. Activate Grinding Station by tapping it and sacrificing Optimus Prime, Autobot Leader
5. When Optimus Prime, Autobot Leader dies, Luminous Broodmoth triggers, returning Optimus Prime from your graveyard to the battlefield as Optimus Prime, Hero with a flying counter on it
6. When Optimus Prime, Hero enters the battlefield, Grinding Station triggers, untapping Grinding Station
7. Resolve both Grinding Station abilities from steps 1 and 4, causing target player to mill six cards
8. Repeat

Results

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