Shilgengar, Sire of Famine, Metalwork Colossus, and Primal Vigor

Prerequisites

• Shilgengar, Sire of Famine on the battlefield
• Metalwork Colossus in hand
• Primal Vigor on the battlefield

Steps

1. Cast Metalwork Colossus by paying
2. Activate Shilgengar by sacrificing Metalwork Colossus, creating two Blood tokens
3. Activate Metalwork Colossus by sacrificing two Bloods, returning it from your graveyard to your hand
4. Repeat

Results

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