Medicine Runner, Luminous Broodmoth, and Altar of Dementia

Prerequisites

• Medicine Runner on the battlefield
• Luminous Broodmoth on the battlefield
• Altar of Dementia on the battlefield
• Medicine Runner does not have a flying counter on it

Steps

1. Activate Altar of Dementia by sacrificing Medicine Runner
2. Medicine Runner dies, triggering Luminous Broodmoth, returning Medicine Runner from your graveyard to the battlefield with a flying counter on it
3. Medicine Runner enters the battlefield, removing its flying counter
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Medicine Runner's power
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill