Sneak Attack, Mardu Warshrieker, Cloudstone Curio, and Crimson Kobolds

Prerequisites

• Sneak Attack on the battlefield
• Mardu Warshrieker in hand
• Cloudstone Curio on the battlefield
• Crimson Kobolds on the battlefield
• You have attacked this turn
• available

Steps

1. Activate Sneak Attack by paying , putting Mardu Warshrieker onto the battlefield
2. Mardu Warshrieker and Cloudstone Curio each trigger
3. Resolve the Mardu Warshrieker trigger, adding
4. Resolve the Cloudstone Curio trigger, returning Crimson Kobolds to your hand
5. Cast Crimson Kobolds by paying
6. Cloudstone Curio triggers, returning Mardu Warshrieker to your hand
7. Repeat

Results

• Infinite black mana
• Infinite ETB
• Infinite LTB
• Infinite storm count
• Infinite white mana