Toph, the First Metalbender, Haru, Hidden Talent, Stonework Puma, and Troubled Healer

Prerequisites

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

Steps

1. Cast Stonework Puma by paying
2. When Stonework Puma enters, Haru triggers, targeting Stonework Puma as it is a land due to Toph
3. Activate Troubled Healer by sacrificing Stonework Puma
4. When Stonework Puma dies, Haru triggers, returning Stonework Puma from your graveyard to the battlefield tapped
5. When Stonework Puma enters, Haru triggers, targeting Stonework Puma as it is a land due to Toph
6. Resolve the Troubled Healer ability
7. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers