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

Toph, the First Metalbender

Toph, Hardheaded Teacher

Lithatog

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 Lithatog 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. Resolve the Lithatog ability
8. Repeat.

This clever loop relies on Toph, the First Metalbender transforming your cheap artifacts into lands, making them valid targets to bounce when Azorius Chancery enters the battlefield. Lithatog acts as the sacrifice outlet that bins the Chancery, which immediately triggers Toph, Hardheaded Teacher to return the land straight back to the battlefield. Meanwhile, every time you recast your recycled artifact, Toph, Hardheaded Teacher triggers again to earthbend your lands while fueling Lithatog's growing power.