Thopter Foundry, Metalwork Colossus, and Pitiless Plunderer

Prerequisites

• Thopter Foundry on the battlefield
• Metalwork Colossus in hand
• Pitiless Plunderer on the battlefield
• The total mana value of noncreature artifacts you control is at least 11
• available

Steps

1. Cast Metalwork Colossus by paying
2. Activate Thopter Foundry by paying and sacrificing Metalwork Colossus
3. When Metalwork Colossus dies, Pitiless Plunderer triggers, creating a Treasure token
4. Resolve the Thopter Foundry trigger, creating a 1/1 Thopter artifact creature token and causing you to gain 1 life
5. Activate Metalwork Colossus by sacrificing the Thopter and Treasure
6. When the Thopter dies, Pitiless Plunderer triggers, creating a Treasure token
7. Resolve the Metalwork Colossus ability, returning it from your graveyard to your hand
8. Activate the Treasure by tapping and sacrificing it, adding
9. Repeat

Results

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