Eternal Scourge, Rest in Peace, Ashnod's Altar, and Ugin, the Ineffable

Prerequisites

• Eternal Scourge on the battlefield
• Rest in Peace on the battlefield
• Ashnod's Altar on the battlefield
• Ugin, the Ineffable on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Eternal Scourge, adding
2. Eternal Scourge is exiled instead of being put into your graveyard due to Rest in Peace
3. Cast Eternal Scourge from exile by paying
4. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count