Koll, the Forgemaster, Demonmail Hauberk, Crookshank Kobolds, and Ornithopter

Prerequisites

• Koll, the Forgemaster on the battlefield
• Demonmail Hauberk on the battlefield
• Crookshank Kobolds on the battlefield
• Ornithopter on the battlefield
• Demonmail Hauberk attached to Crookshank Kobolds

Steps

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

Results

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