Koll, the Forgemaster, Reckless Barbarian, and Sai of the Shinobi

Prerequisites

• Koll, the Forgemaster on the battlefield
• Reckless Barbarian on the battlefield
• Sai of the Shinobi on the battlefield
• Sai of the Shinobi attached to Reckless Barbarian

Steps

1. Activate Reckless Barbarian by sacrificing it, adding
2. When Reckless Barbarian dies, Koll triggers, returning Reckless Barbarian from your graveyard to your hand
3. Cast Reckless Barbarian by paying
4. When Reckless Barbarian enters the battlefield, Sai of the Shinobi triggers, attaching itself to Reckless Barbarian
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count