Rootha, Mercurial Artist, Jeska's Will, Storm-Kiln Artist, and Winding Canyons

Prerequisites

• Rootha, Mercurial Artist on the battlefield
• Jeska's Will in hand
• Storm-Kiln Artist on the battlefield
• Winding Canyons on the battlefield
• available

Steps

1. Activate Winding Canyons by paying and tapping it, allowing you to cast creature spells as though they have flash this turn
2. Cast Jeska's Will by paying
3. Storm-Kiln Artist triggers, creating a Treasure token
4. Activate a Treasure by tapping and sacrificing it, adding
5. Holding priority, activate Rootha by paying and returning it from the battlefield to your hand, copying Jeska's Will
6. Storm-Kiln Artist triggers, creating a Treasure token
7. Resolve the Jeska's Will copy, adding at least
8. Activate a Treasure by tapping and sacrificing it, adding
9. Cast Rootha by paying
10. Repeat from step 5

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite red mana
• Infinite magecraft triggers
• Exile your library with the ability to play the exiled cards until end of turn