Koll, the Forgemaster, Demonmail Hauberk, Puresteel Paladin, and Impulsive Pilferer

Prerequisites

• Koll, the Forgemaster on the battlefield
• Demonmail Hauberk on the battlefield
• Puresteel Paladin on the battlefield
• Impulsive Pilferer on the battlefield
• You control three or more artifacts, including an Equipment except Demonmail Hauberk

Steps

1. Activate an equipment except Demonmail Hauberk's equip ability by paying , attaching it to Impulsive Pilferer
2. Activate Demonmail Hauberk by sacrificing Impulsive Pilferer, targeting Koll
3. When Impulsive Pilferer dies, it and Koll trigger
4. Resolve the Impulsive Pilferer trigger, creating a Treasure token
5. Resolve the Koll trigger, returning it from your graveyard to your hand
6. Resolve the Demonmail Hauberk ability, attaching it to Koll
7. Activate the Treasure by tapping and sacrificing it, adding
8. Cast Impulsive Pilferer by paying its mana cost
9. Repeat

Results

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