Gravelgill Axeshark, Luminous Broodmoth, and Altar of Dementia

Prerequisites

• Gravelgill Axeshark on the battlefield
• Luminous Broodmoth on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Sacrifice Gravelgill Axeshark to Altar of Dementia to mill target player equal to Gravelgill Axeshark's power
2. Return Gravelgill Axeshark to the battlefield with the persist trigger, giving it a -1/-1 counter
3. Sacrifice Gravelgill Axeshark to Altar of Dementia to mill target player equal to Gravelgill Axeshark's power
4. Return Gravelgill Axeshark 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