Leyline Immersion, Cloudstone Curio, and Nature's Chosen

Prerequisites

• Leyline Immersion on the battlefield
• Cloudstone Curio on the battlefield
• Nature's Chosen 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 Nature's Chosen by paying , attaching it to the legendary creature
3. When Nature's Chosen enters the battlefield, Cloudstone Curio triggers, returning Leyline Immersion to your hand from the battlefield
4. Activate Nature's Chosen's first ability 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 Nature's Chosen to your hand from the battlefield
7. Repeat

Results

• Infinite storm count