Rootha, Mercurial Artist + Through the Breach + Storm-Kiln Artist + Xorn

Rootha, Mercurial Artist

Through the Breach

Storm-Kiln Artist

Xorn

How it works

1. Cast Through the Breach by paying 4.
2. Storm-Kiln Artist triggers, creating two Treasure tokens.
3. Activate the Treasure tokens by tapping and sacrificing them, adding 2.
4. Activate Rootha by paying 2 and returning it from the battlefield to your hand, copying Through the Breach.
5. Storm-Kiln Artist triggers, creating two Treasure tokens.
6. Resolve the copy of Through the Breach, putting Rootha from your hand onto the battlefield.
7. Repeat from step 3.

This loop lets you infinitely recur Through the Breach by leveraging Rootha, Mercurial Artist's ability to bounce itself to hand and copy the spell, which in turn fuels Storm-Kiln Artist's magecraft trigger to generate mana. Because Xorn is on the board, every instance where you would create Treasure tokens instead produces an extra one, ensuring you always net positive mana from the Treasures to pay Rootha's activation cost and recast the spell.