Toph, the First Metalbender + Caged Sun

Toph, the First Metalbender

Caged Sun

How it works

1. Activate a land by tapping it, adding at least one mana of the color named by Caged Sun.
2. Caged Sun triggers, adding one mana of that color.
3. Caged Sun triggers again, as it is a land due to Toph, adding one mana of that color.
4. Step 3 repeats in a mandatory infinite loop, causing the game to end in a draw.

This clever loop hinges on Toph, the First Metalbender transforming all your nontoken artifacts into lands, quietly turning the battlefield into a realm of dual-natured permanents. Once Caged Sun enters the battlefield and names a color, tapping one of these newly minted artifact-lands for mana triggers Caged Sun's ability to produce an extra mana of that color. Because Toph also makes Caged Sun itself a land, Caged Sun’s own triggered ability sees a land adding mana and triggers *itself* in response, creating a mandatory, inescapable loop of floating mana that forces a draw.