Prismari, the Inspiration, Storm-Kiln Artist, and Unsubstantiate

Prerequisites

• Prismari, the Inspiration on the battlefield
• Storm-Kiln Artist on the battlefield
• Unsubstantiate in hand
• available

Steps

1. Cast any spell by paying its mana cost
2. Holding priority, cast Unsubstantiate by paying its mana cost, targeting the spell cast in step 1
3. Unsubstantiate's storm ability and Storm-Kiln Artist trigger
4. Resolve the Storm-Kiln Artist trigger, creating a Treasure token
5. Resolve the Unsubstantiate trigger, copying it for each spell cast before it this turn
6. Choose to have each copy target the original Unsubstantiate
7. Storm-Kiln Artist triggers for each copy generated, creating that many Treasure tokens
8. Resolve the first Unsubstantiate copy, returning the original Unsubstantiate to your hand
9. All other copies of Unsubstantiate fizzle due to having no legal target
10. Activate two Treasures by tapping and sacrificing them, adding
11. Repeat from step 2

Results

• Infinite Treasure tokens
• Infinite colored mana
• Infinite magecraft triggers
• Infinite storm count