Gutter Grime, Altar of Dementia, Cult Conscript, and Pitiless Plunderer

Prerequisites

• Gutter Grime on the battlefield
• Altar of Dementia on the battlefield
• Cult Conscript in the graveyard
• Pitiless Plunderer on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Cult Conscript
2. When Cult Conscript dies, Pitiless Plunderer and Gutter Grime trigger, creating a creature token and a Treasure token
3. Resolve the Altar of Dementia ability
4. Activate Altar of Dementia by sacrificing the creature token
5. When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token
6. Resolve the Altar of Dementia ability
7. Activate the Treasures by tapping and sacrificing them, adding
8. Activate Cult Conscript by paying , returning it from your graveyard to the battlefield
9. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Infinitely large creature