Adarkar Valkyrie, Thornbite Staff, and Shilgengar, Sire of Famine

Prerequisites

• Adarkar Valkyrie on the battlefield
• Thornbite Staff on the battlefield
• Shilgengar, Sire of Famine on the battlefield

Steps

1. Activate Adarkar Valkyrie by tapping it, targeting another creature you control
2. Activate Shilgengar by sacrificing the creature targeted in step 1
3. When the creature dies, Adarkar Valkyrie triggers twice
4. Resolve the first trigger, untapping Adarkar Valkyrie
5. Resolve the second trigger, returning the sacrificed creature to the battlefield
6. Resolve the Shilgengar ability Repeat

Results

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