Toph, the First Metalbender + Toph, Hardheaded Teacher + Golgari Rot Farm + Carrion Feeder

Toph, the First Metalbender

Toph, Hardheaded Teacher

Golgari Rot Farm

Carrion Feeder

How it works

1. Cast the artifact by paying 0.
2. Toph, Hardheaded Teacher triggers, earthbending Golgari Rot Farm.
3. Resolve the artifact spell.
4. Activate Carrion Feeder 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. Resolve the Carrion Feeder ability
8. Repeat.

This clever loop relies on Toph, the First Metalbender to fundamentally rewrite the rules of your battlefield by turning all your nontoken artifacts into lands. Because of this static ability, a free-to-cast artifact counts as a land, allowing Golgari Rot Farm's entry trigger to bounce that very artifact right back to your hand for another pass. Meanwhile, Carrion Feeder acts as the sacrifice outlet that sends your animated lands to the graveyard, where Toph, Hardheaded Teacher steps in with its earthbend mechanic to ensure everything effortlessly recycles back onto the battlefield.