Blessed Sanctuary, Cloudstone Curio, and Crimson Kobolds

Prerequisites

• Blessed Sanctuary on the battlefield
• Cloudstone Curio on the battlefield
• Crimson Kobolds in hand

Steps

1. Cast Crimson Kobolds by paying
2. Crimson Kobolds enters the battlefield, triggering Cloudstone Curio and Blessed Sanctuary
3. Resolve the Cloudstone Curio trigger, returning nothing from the battlefield to your hand
4. Resolve the Blessed Sanctuary, creating a 2/2 Unicron creature token
5. The Unicorn enters the battlefield, triggering Cloudstone Curio, returning Crimson Kobolds from the battlefield to your hand
6. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite LTB
• Infinite storm count