Toph, the First Metalbender + Haru, Hidden Talent + Viscera Seer + Three Tree Mascot

Toph, the First Metalbender

Haru, Hidden Talent

Viscera Seer

Three Tree Mascot

How it works

1. Cast Three Tree Mascot by paying 2.
2. When Three Tree Mascot enters, Haru triggers, targeting Three Tree Mascot as it is a land due to Toph.
3. Activate Viscera Seer by sacrificing Three Tree Mascot.
4. When Three Tree Mascot dies, Haru triggers, returning Three Tree Mascot from your graveyard to the battlefield tapped.
5. When Three Tree Mascot enters, Haru triggers, targeting Three Tree Mascot as it is a land due to Toph.
6. Resolve the Viscera Seer ability.
7. Repeat from step 3.

This loop transforms the humble Three Tree Mascot into an immortal, endlessly sacrificing creature by cleverly rewriting the rules of the battlefield. Because Toph, the First Metalbender turns all your nontoken artifacts into lands, the Mascot enters as both an artifact land and a changeling Ally, immediately triggering Haru, Hidden Talent's earthbending ability to animate it. You can then feed the animated Mascot to Viscera Seer, taking advantage of its built-in return clause to bounce it straight back to the battlefield tapped—ready to trigger Haru all over again and fuel infinite scry depth and sacrifice triggers.