Toph, the First Metalbender + Toph, Hardheaded Teacher + Ashnod's Altar + Gruul Turf

Toph, the First Metalbender

Toph, Hardheaded Teacher

Ashnod's Altar

Gruul Turf

How it works

1. Cast the artifact by paying 0.
2. Toph, Hardheaded Teacher triggers, earthbending Gruul Turf.
3. Resolve the artifact spell.
4. Activate Ashnod's Altar 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. Repeat.

This fascinating loop turns your cheap artifacts into a self-sustaining engine by taking advantage of Toph, the First Metalbender's static ability, which permanently turns all your nontoken artifacts into lands. Once Gruul Turf is animated into a creature by Toph, Hardheaded Teacher's earthbend triggers, you can sacrifice it to Ashnod's Altar for colorless mana. Because Gruul Turf is technically a land when it dies, Toph's earthbend replacement effect or built-in recursion safely returns it to the battlefield tapped, where its own entry trigger forces it to pick up your original artifact—which has now conveniently become a land itself—restarting the cycle indefinitely.