Koll, the Forgemaster, Rograkh, Son of Rohgahh, Demonmail Hauberk, and Crimson Kobolds

Prerequisites

• Koll, the Forgemaster on the battlefield
• Rograkh, Son of Rohgahh on the battlefield
• Demonmail Hauberk on the battlefield
• Crimson Kobolds on the battlefield
• Demonmail Hauberk attached to Crimson Kobolds

Steps

1. Activate Demonmail Hauberk's equip ability by sacrificing Crimson Kobolds, targeting Rograkh
2. When Crimson Kobolds dies, Koll triggers, returning Crimson Kobolds from your graveyard to your hand
3. Resolve the Demonmail Hauberk ability, attaching it to Rograkh
4. Cast Crimson Kobolds by paying
5. Activate Demonmail Hauberk's equip ability by sacrificing Rograkh, targeting Crimson Kobolds
6. When Rograkh dies, Koll triggers, returning Rograkh from your graveyard to your hand
7. Resolve the Demonmail Hauberk ability, attaching it to Crimson Kobolds
8. Cast Rograkh by paying
9. Repeat

Results

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