Toph, the First Metalbender + Toph, Hardheaded Teacher + Thermopod + Azorius Chancery

Toph, the First Metalbender

Toph, Hardheaded Teacher

Thermopod

Azorius Chancery

How it works

1. Cast the artifact by paying 0.
2. Toph, Hardheaded Teacher triggers, earthbending Azorius Chancery.
3. Resolve the artifact spell.
4. Activate Thermopod by sacrificing Azorius Chancery.
5. When Azorius Chancery dies, Toph, Hardheaded Teach triggers, returning Azorius Chancery from your graveyard to the battlefield tapped.
6. When Azorius Chancery 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 intricate loop transforms a humble zero-mana artifact into an infinite engine by leveraging the unique type-changing magic of Toph, the First Metalbender, which turns your nontoken artifacts into lands. Once Azorius Chancery is earthbent into a creature by Toph, Hardheaded Teacher, you can feed it to Thermopod for red mana. Because Azorius Chancery is a land, its death triggers Toph, Hardheaded Teacher's safety net—which is actually an earthbend replacement effect or return trigger—to bring it right back to the battlefield tapped. When Azorius Chancery enters, its own bounce ability triggers to scoop up your original zero-mana artifact, letting you replay it, trigger Toph, Hardheaded Teacher all over again, and repeat the entire cycle for boundless sacrifice and landfall rewards!