Toph, the First Metalbender, Haru, Hidden Talent, Stonework Puma, and Grinding Station

Prerequisites

• Toph, the First Metalbender on the battlefield
• Haru, Hidden Talent on the battlefield
• Stonework Puma in hand
• Grinding Station on the battlefield
• available

Steps

1. Cast Stonework Puma by paying
2. When Stonework Puma enters, Grinding Station and Haru trigger
3. Resolve the Haru trigger, targeting Stonework Puma as it is a land due to Toph
4. Resolve the Grinding Station trigger, untapping it
5. Activate Grinding Station by tapping it and sacrificing Stonework Puma
6. When Stonework Puma dies, Haru triggers, returning Stonework Puma from your graveyard to the battlefield tapped
7. When Stonework Puma enters, Grinding Station and Haru trigger
8. Resolve the Haru trigger, targeting Stonework Puma as it is a land due to Toph
9. Resolve the Grinding Station trigger, untapping it
10. Resolve the Grinding Station ability from step 5
11. Repeat from step 5

Results

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