Adarkar Valkyrie, Thornbite Staff, and Bloodflow Connoisseur

Prerequisites

• Adarkar Valkyrie on the battlefield
• Thornbite Staff on the battlefield
• Bloodflow Connoisseur on the battlefield
• Adarkar Valkyrie does not have summoning sickness

Steps

1. Activate Adarkar Valkyrie by tapping it, targeting Bloodflow Connoisseur
2. Activate Bloodflow Connoisseur by sacrificing it
3. When Bloodflow Connoisseur dies, Adarkar Valkyrie triggers twice
4. Resolve the first trigger, untapping Adarkar Valkyrie
5. Resolve the second trigger, returning Bloodflow Connoisseur from your graveyard to the battlefield
6. Resolve the Bloodflow Connoisseur ability
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on Bloodflow Connoisseur