Toph, the First Metalbender, Toph, Hardheaded Teacher, Gruul Turf, and Carrion Feeder

Prerequisites

• Toph, the First Metalbender on the battlefield
• Toph, Hardheaded Teacher on the battlefield
• Gruul Turf on the battlefield
• Carrion Feeder on the battlefield

Steps

1. Cast the artifact by paying
2. Toph, Hardheaded Teacher triggers, earthbending Gruul Turf
3. Resolve the artifact spell
4. Activate Carrion Feeder by sacrificing Gruul Turf
5. When Gruul Turf dies, Toph, Hardheaded Teach triggers, returning Gruul Turf from your graveyard to the battlefield tapped
6. When Gruul Turf 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. Resolve the Carrion Feeder ability Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite landfall triggers
• Infinite creature sacrifice triggers
• Infinite storm count