Toph, the First Metalbender + Toph, Hardheaded Teacher + Umbral Collar Zealot + Gruul Turf

Toph, the First Metalbender

Toph, Hardheaded Teacher

Umbral Collar Zealot

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 Umbral Collar Zealot 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 Umbral Collar Zealot ability
8. Repeat.

This intricate loop turns a humble zero-mana artifact into a self-sustaining engine by weaving together land-type manipulation and recursive triggers. With Toph, the First Metalbender actively transforming your nontoken artifacts into lands, your free artifacts become valid targets for Gruul Turf's enter-the-battlefield bounce ability. Meanwhile, Umbral Collar Zealot provides a reliable outlet to sacrifice that land, triggering Toph, Hardheaded Teacher's safety net to bring Gruul Turf right back to the battlefield. Every single iteration of this cycle is fueled by casting your artifact anew, letting you churn through your deck with infinite surveil triggers while racking up endless landfall and death counts.