Warbeast of Gorgoroth, Spawning Pit, and Primal Vigor

Prerequisites

• Warbeast of Gorgoroth on the battlefield
• Spawning Pit on the battlefield
• Primal Vigor on the battlefield

Steps

1. Activate Spawning Pit 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 Spawning Pit ability, putting a charge counter on Spawning Pit Repeat

Results

• Infinite charge counters on a permanent
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers