Leyline Immersion, Cloudstone Curio, and Instill Energy

Prerequisites

• Leyline Immersion on the battlefield
• Cloudstone Curio on the battlefield
• Instill Energy in hand
• Leyline Immersion attached to any legendary creature you control without summoning sickness

Steps

1. Activate the legendary creature with Leyline Immersion attached by tapping it, adding that can only be spent to cast spells
2. Cast Instill Energy by paying , attaching it to the legendary creature
3. When Instill Energy enters the battlefield, Cloudstone Curio triggers, returning Leyline Immersion to your hand from the battlefield
4. Activate Instill Energy by paying , untapping the legendary creature
5. Cast Leyline Immersion by paying , attaching it to the legendary creature
6. When Leyline Immersion enters the battlefield, Cloudstone Curio triggers, returning Instill Energy to your hand from the battlefield
7. Repeat

Results

• Infinite storm count