Rootha, Mercurial Artist, Seething Song, Storm-Kiln Artist, and Leyline of Anticipation

Prerequisites

• Rootha, Mercurial Artist on the battlefield
• Seething Song in hand
• Storm-Kiln Artist on the battlefield
• Leyline of Anticipation on the battlefield
• available

Steps

1. Cast Seething Song by paying
2. Storm-Kiln Artist triggers, creating a Treasure token
3. Activate a Treasure by tapping and sacrificing it, adding
4. Holding priority, activate Rootha by paying and returning it from the battlefield to your hand, copying Seething Song
5. Storm-Kiln Artist triggers, creating a Treasure token
6. Resolve the Seething Song copy, adding
7. Activate a Treasure by tapping and sacrificing it, adding
8. Cast Rootha by paying
9. Repeat from step 4

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite red mana
• Infinite magecraft triggers