Toph, the First Metalbender + Toph, Hardheaded Teacher + Guildless Commons + Carrion Feeder

Toph, the First Metalbender

Toph, Hardheaded Teacher

Guildless Commons

Carrion Feeder

How it works

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

This clever loop transforms your free artifacts into an endless engine by leveraging Toph, the First Metalbender, whose static ability turns all your nontoken artifacts into lands. Once Guildless Commons is designated as a land creature through Toph, Hardheaded Teacher's earthbend, you can sacrifice it to Carrion Feeder. The safety net provided by Toph, the First Metalbender ensures that when Guildless Commons dies, it returns to the battlefield tapped, where its entry trigger bounces your original artifact back to your hand to restart the chain.