Toph, the First Metalbender + Toph, Hardheaded Teacher + Guildless Commons + Yahenni, Undying Partisan

Toph, the First Metalbender

Toph, Hardheaded Teacher

Guildless Commons

Yahenni, Undying Partisan

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 Yahenni 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 Yahenni ability
8. Repeat.

This clever loop transforms your free artifacts into a relentless engine by leveraging Toph, the First Metalbender, which brilliantly reclassifies all your nontoken artifacts as lands. With that foundation set, casting your artifact triggers Toph, Hardheaded Teacher to animate your Guildless Commons, allowing Yahenni, Undying Partisan to sacrifice it as a creature. The moment Guildless Commons hits the graveyard, its earthbend-granted return ability kicks in to put it right back onto the battlefield tapped. That new entry triggers Guildless Commons' own bounce ability, letting you pick up your original artifact—which is currently masquerading as a land—to recast it and do it all over again.