Warbeast of Gorgoroth, Shilgengar, Sire of Famine, and Primal Vigor

Prerequisites

• Warbeast of Gorgoroth on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Primal Vigor on the battlefield

Steps

1. Activate Shilgengar by sacrificing the creature with power 4 or greater
2. When the creature dies, Warbeast of Gorgoroth triggers, creating a 0/0 Army creature token if you don't control one, then putting four +1/+1 counters on an Army you control
3. Resolve the Shilgengar ability, creating a Blood token Repeat

Results

• Infinite Blood tokens
• Infinite artifact tokens
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers