Sibling Rivalry, Dual Casting, and Storm-Kiln Artist

Prerequisites

• Sibling Rivalry in hand
• Dual Casting on the battlefield
• Storm-Kiln Artist on the battlefield
• available

Steps

1. Cast Sibling Rivalry by paying , targeting any applicable permanent
2. Storm-Kiln Artist triggers, creating a Treasure token
3. Activate the Treasure token by tapping and sacrificing it, adding
4. Activate the creature with Dual Casting attached by paying and tapping it, copying Sibling Rivalry, targeting the creature with Dual Casting attached
5. Storm-Kiln Artist triggers, creating a Treasure token
6. Resolve the copy of Sibling Rivalry, untapping the creature with Dual Casting attached and creating a tapped Powerstone artifact token
7. Repeat from step 3

Results

• Infinite magecraft triggers
• Infinite tapped Powerstone tokens