Xathrid Necromancer, Shilgengar, Sire of Famine, and Maskwood Nexus

Prerequisites

• Xathrid Necromancer on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Maskwood Nexus on the battlefield

Steps

1. Activate Shilgengar by sacrificing any other creature
2. When the creature dies as a Human due to Maskwood Nexus, Xathrid Necromancer triggers, creating a 2/2 Zombie creature token
3. Resolve the Shilgengar ability
4. Repeat

Results

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