Angel of Indemnity, Phyrexian Altar, and Restoration Angel

Prerequisites

• Angel of Indemnity on the battlefield
• Phyrexian Altar 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 Phyrexian Altar 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 colored mana
• Infinite sacrifice triggers
• Infinite death triggers