Angel of Indemnity, Altar of Dementia, and Restoration Angel

Prerequisites

• Angel of Indemnity on the battlefield
• Altar of Dementia on the battlefield
• Restoration Angel in hand

Steps

1. Cast Restoration Angel by paying its mana cost
2. When Restoration Angel enters the battlefield, it triggers, targeting Metamorphosis Fanatic
3. Holding priority, activate Altar of Dementia by sacrificing Restoration Angel
4. Resolve the Restoration Angel ability, blinking Metamorphosis Fanatic
5. When Metamorphosis Fanatic enters the battlefield, it triggers, returning Restoration Angel from your graveyard to the battlefield
6. Repeat from step 2

Results

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