Koll, the Forgemaster, Demonmail Hauberk, Grafted Wargear, and Greedy Freebooter

Prerequisites

• Koll, the Forgemaster on the battlefield
• Demonmail Hauberk on the battlefield
• Grafted Wargear on the battlefield
• Greedy Freebooter on the battlefield

Steps

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

Results

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