Toph, the First Metalbender + Toph, Hardheaded Teacher + Simic Growth Chamber + Bartolomé del Presidio

Toph, the First Metalbender

Toph, Hardheaded Teacher

Simic Growth Chamber

Bartolomé del Presidio

How it works

1. Cast the artifact by paying 0.
2. Toph, Hardheaded Teacher triggers, earthbending Simic Growth Chamber.
3. Resolve the artifact spell.
4. Activate Bartolomé del Presidio by sacrificing Simic Growth Chamber.
5. When Simic Growth Chamber dies, Toph, Hardheaded Teach triggers, returning Simic Growth Chamber from your graveyard to the battlefield tapped.
6. When Simic Growth Chamber 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 Bartolomé del Presidio ability
8. Repeat.

This clever loop relies on Toph, the First Metalbender transforming your free-to-cast artifacts into lands, making them valid targets for the bounce ability of Simic Growth Chamber. As you repeatedly cast and sacrifice that artifact, Toph, Hardheaded Teacher triggers upon casting to animate your bounce land and later catches it with her recursion when it dies to Bartolomé del Presidio's sacrifice cost. Finally, when Simic Growth Chamber re-enters the battlefield, its own triggered ability forces you to return the artifact land back to your hand, resetting the entire cycle.