Altar of Dementia + Felidar Guardian + Gravity Sphere + Luminous Broodmoth

RW identity

Commander legal

The 4 combo pieces

• Altar of Dementia
• Felidar Guardian
• Gravity Sphere
• Luminous Broodmoth

How to execute it

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.

What the combo produces

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