Toph, the First Metalbender + Haru, Hidden Talent + Stonework Puma + Umbral Collar Zealot

Toph, the First Metalbender

Haru, Hidden Talent

Stonework Puma

Umbral Collar Zealot

How it works

1. Cast Stonework Puma by paying 3.
2. When Stonework Puma enters, Haru triggers, targeting Stonework Puma as it is a land due to Toph.
3. Activate Umbral Collar Zealot by sacrificing Stonework Puma.
4. When Stonework Puma dies, Haru triggers, returning Stonework Puma from your graveyard to the battlefield tapped.
5. When Stonework Puma enters, Haru triggers, targeting Stonework Puma as it is a land due to Toph.
6. Resolve the Umbral Collar Zealot ability.
7. Repeat from step 3.

This ingenious loop relies on Toph, the First Metalbender's continuous ability to treat your nontoken artifacts as lands, which cleverly transforms the creature Stonework Puma into a legal target for land-based effects. As Stonework Puma repeatedly enters the battlefield, Haru, Hidden Talent triggers to earthbend it into a creature-land, allowing Umbral Collar Zealot to instantly sacrifice it for a surveil trigger. Because earthbending returns the Puma to the battlefield tapped when it dies or is exiled, Haru triggers all over again to restart the cycle, generating an endless stream of artifact and creature sacrifices, death triggers, and landfall events.