Danitha, Benalia's Hope, Shilgengar, Sire of Famine, and Necrogen Communion

Prerequisites

• Danitha, Benalia's Hope on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Necrogen Communion on the battlefield

Steps

1. Activate Shilgengar by sacrificing Danitha
2. When Danitha dies, Necrogen Communion triggers, returning Danitha from your graveyard to the battlefield tapped
3. When Danitha enters the battlefield, it triggers, returning Necrogen Communion from your graveyard to the battlefield attached to Danitha
4. Resolve the Shilgengar ability, creating a Blood token
5. Repeat

Results

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