Sun Titan, Shilgengar, Sire of Famine, and Unholy Indenture

Prerequisites

• Sun Titan on the battlefield
• Shilgengar, Sire of Famine on the battlefield
• Unholy Indenture on the battlefield

Steps

1. Activate Shilgengar by sacrificing Sun Titan
2. When Sun Titan dies, Unholy Indenture triggers, returning Sun Titan from your graveyard to the battlefield
3. When Sun Titan enters, it triggers, returning Unholy Indenture from your graveyard to the battlefield attached to Sun Titan
4. Resolve the Shilgengar ability
5. Repeat

Results

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