Toph, the First Metalbender + Toph, Hardheaded Teacher + Viscera Seer + Orzhov Basilica

Toph, the First Metalbender

Toph, Hardheaded Teacher

Viscera Seer

Orzhov Basilica

How it works

1. Cast the artifact by paying 0.
2. Toph, Hardheaded Teacher triggers, earthbending Orzhov Basilica.
3. Resolve the artifact spell.
4. Activate Viscera Seer by sacrificing Orzhov Basilica.
5. When Orzhov Basilica dies, Toph, Hardheaded Teach triggers, returning Orzhov Basilica from your graveyard to the battlefield tapped.
6. When Orzhov Basilica 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 Viscera Seer ability
8. Repeat.

This clever loop transforms a zero-mana artifact into an infinite engine by leveraging Toph, the First Metalbender's static ability, which turns your nontoken artifacts into lands. With that foundation set, you can cast your artifact repeatedly while Toph, Hardheaded Teacher animates Orzhov Basilica into a creature that you can sacrifice to Viscera Seer. When Orzhov Basilica dies, its own built-in safety net brings it back to the battlefield tapped, triggering its entrance ability to bounce your newly-landified artifact right back to your hand.