Athreos, Shroud-Veiled, Resourceful Defense, and Bloodflow Connoisseur

Prerequisites

• Athreos, Shroud-Veiled on the battlefield
• Resourceful Defense on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing the creature with a coin counter on it
2. When the creature dies, Resourceful Defense and Athreos trigger
3. Resolve the Resourceful Defense trigger, putting a coin counter on another nontoken creature you control
4. Resolve the Athreos trigger, returning the creature that died in step 1 from your graveyard to the battlefield
5. Resolve the Bloodflow Connoisseur ability
6. Repeat

Results

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