Toph, the First Metalbender + Toph, Hardheaded Teacher + Altar of Dementia + Orzhov Basilica

Toph, the First Metalbender

Toph, Hardheaded Teacher

Altar of Dementia

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 Altar of Dementia 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 Altar of Dementia ability
8. Repeat.

This ingenious loop turns a zero-cost artifact into an engine of endless sacrifice by leveraging Toph, the First Metalbender to fundamentally rewrite your nontoken artifacts as lands. With that foundation set, you cast your artifact for free, letting Toph, Hardheaded Teacher animate Orzhov Basilica into a creature through her earthbend ability so it is primed for Altar of Dementia. When you sacrifice the animated Basilica to the Altar, its death triggers Toph, Hardheaded Teacher's safety net to return it straight to the battlefield, where its own entry trigger forces you to bounce your artifact-turned-land right back to your hand. Repeating this cycle feeds the Altar of Dementia indefinitely, milling your opponents out while generating infinite storm count, landfall, and death triggers.