Fain, the Broker, Thornbite Staff, Pitiless Plunderer, and Viscera Seer

Prerequisites

• Fain, the Broker on the battlefield
• Thornbite Staff on the battlefield
• Pitiless Plunderer on the battlefield
• Viscera Seer on the battlefield
• Fain does not have summoning sickness
• You control at least one additional artifact

Steps

1. Activate Fain's third ability by tapping it and sacrificing another artifact, creating a 2/1 Inkling creature token
2. Activate Viscera Seer by sacrificing the Inkling
3. When the Inkling dies, Fain and Pitiless Plunderer trigger
4. Resolve the Fain trigger, untapping it
5. Resolve the Pitiless Plunderer trigger, creating a Treasure token
6. Resolve the Viscera Seer ability, causing you to scry 1
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite scry 1