Toph, the First Metalbender, Haru, Hidden Talent, Firdoch Core, and Need for Speed

Prerequisites

• Toph, the First Metalbender on the battlefield
• Haru, Hidden Talent on the battlefield
• Firdoch Core in hand
• Need for Speed on the battlefield
• available

Steps

1. Cast Firdoch Core by paying
2. When Firdoch Core enters, Haru triggers, earthbending Firdoch Core, as it's a land due to Toph
3. Activate Need for Speed by sacrificing Firdoch Core
4. When Firdoch Core dies, Haru triggers, returning Firdoch Core from your graveyard to the battlefield
5. When Firdoch Core enters, Haru triggers, earthbending Firdoch Core, as it's a land due to Toph
6. Resolve the Need for Speed ability
7. Repeat from step 3

Results

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