Wingrattle Scarecrow, Luminous Broodmoth, and Altar of Dementia

Prerequisites

• Wingrattle Scarecrow on the battlefield
• Luminous Broodmoth on the battlefield
• Altar of Dementia on the battlefield
• You control a black creature
• You do not control a blue creature

Steps

1. Sacrifice Wingrattle Scarecrow to Altar of Dementia to mill target player equal to Wingrattle Scarecrow's power
2. Return Wingrattle Scarecrow to the battlefield with the persist trigger, giving it a -1/-1 counter
3. Sacrifice Wingrattle Scarecrow to Altar of Dementia to mill target player equal to Wingrattle Scarecrow's power
4. Return Wingrattle Scarecrow to the battlefield with the Luminous Broodmoth trigger, giving it a flying counter
5. Repeat

Results

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