Doc Aurlock, Grizzled Genius, Rest in Peace, Eternal Scourge, and Ashnod's Altar

Prerequisites

• Doc Aurlock, Grizzled Genius on the battlefield
• Rest in Peace on the battlefield
• Eternal Scourge on the battlefield
• Ashnod's Altar 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 ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count
• Infinite colorless mana