Rotlung Reanimator, Shilgengar, Sire of Famine, and Xenograft

Prerequisites

• Rotlung Reanimator on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Xenograft on the battlefield

Steps

1. Activate Shilgengar by sacrificing any other creature
2. When the creature dies as a Cleric due to Xenograft, Rotlung Reanimator triggers, creating a 2/2 Zombie creature token
3. Resolve the Shilgengar ability
4. Repeat

Results

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