Prosper, Tome-Bound, Eternal Scourge, Ashnod's Altar, and Yawgmoth's Will

Prerequisites

• Prosper, Tome-Bound on the battlefield
• Eternal Scourge on the battlefield
• Ashnod's Altar on the battlefield
• Yawgmoth's Will in hand
• available

Steps

1. Cast Yawgmoth's Will by paying
2. Activate Ashnod's Altar by sacrificing Eternal Scourge, adding
3. Eternal Scourge is exiled instead of being put into your graveyard due to Yawgmoth's Will
4. Cast Eternal Scourge from exile by paying
5. Prosper's second ability triggers, creating a Treasure artifact token
6. Activate the Treasure by tapping and sacrificing it, adding
7. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count