Danitha, Benalia's Hope, Shilgengar, Sire of Famine, and Unholy Indenture

Prerequisites

• Danitha, Benalia's Hope on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Unholy Indenture on the battlefield
• Unholy Indenture attached to Danitha

Steps

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

Results

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