Luminous Broodmoth, Felidar Guardian, Mystic Decree, and Altar of Dementia

Prerequisites

• Luminous Broodmoth on the battlefield
• Felidar Guardian on the battlefield
• Mystic Decree on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Sacrifice Felidar Guardian to Altar of Dementia to mill target player for 1
2. Luminous Broodmoth triggers, returning Felidar Guardian to the battlefield with a flying counter on it
3. Felidar Guardian's ETB triggers, exiling Mystic Decree and then returning it to the battlefield
4. Repeat

Results

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