Toph, the First Metalbender, Toph, Hardheaded Teacher, Ashnod's Altar, and Golgari Rot Farm

Prerequisites

• Toph, the First Metalbender on the battlefield
• Toph, Hardheaded Teacher on the battlefield
• Ashnod's Altar on the battlefield
• Golgari Rot Farm on the battlefield

Steps

1. Cast the artifact by paying
2. Toph, Hardheaded Teacher triggers, earthbending Golgari Rot Farm
3. Resolve the artifact spell
4. Activate Ashnod's Altar by sacrificing Golgari Rot Farm
5. When Golgari Rot Farm dies, Toph, Hardheaded Teach triggers, returning Golgari Rot Farm from your graveyard to the battlefield tapped
6. When Golgari Rot Farm enters, it triggers, returning the artifact cast in step 1 from the battlefield to your hand, as it's a land due to Toph, the First Metalbender
7. Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite colorless mana
• Infinite death triggers
• Infinite landfall triggers
• Infinite creature sacrifice triggers
• Infinite storm count