Toph, the First Metalbender + Toph, Hardheaded Teacher + Gruul Turf + Bloodflow Connoisseur

Toph, the First Metalbender

Toph, Hardheaded Teacher

Gruul Turf

Bloodflow Connoisseur

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 Bloodflow Connoisseur 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 Bloodflow Connoisseur ability
8. Repeat.

This clever loop hinges on Toph, the First Metalbender transforming your free-to-cast artifacts into lands, allowing Gruul Turf to bounce them right back to your hand when it enters the battlefield. As you cast your zero-mana artifact, Toph, Hardheaded Teacher triggers to earthbend the Gruul Turf into a creature. You then feed that animated land to Bloodflow Connoisseur, triggering Toph's earthbend return clause to bring Gruul Turf straight back to the battlefield tapped and restart the cycle.