Requires

Sneak Attack must be on the battlefield. Cloud of Faeries must be in hand. Cloudstone Curio must be on the battlefield. Crimson Kobolds must be on the battlefield. A land that can produce . Mana needed:

Steps

1. Activate Sneak Attack to put Cloud of Faeries on the battlefield.
2. Cloud of Faeries enter the battlefield ability allowing you to untap 2 lands.
3. Untap at least a land that can produce .
4. Cloudstone Curio triggers allowing you to return Crimson Kobolds to your hand.
5. Cast Crimson Kobolds.
6. Cloudstone Curio allows you to return Cloud of Faeries to your hand.
7. Repeat.

Results