Lurrus of the Dream-Den, Flickering Hound, Phyrexian Walker, and Bloodflow Connoisseur

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Phyrexian Walker in hand or in the graveyard
• Bloodflow Connoisseur on the battlefield

Steps

1. Cast Phyrexian Walker by paying
2. Flickering Hound triggers, blinking Lurrus
3. Resolve the Phyrexian Walker spell
4. Then, activate Bloodflow Connoisseur by sacrificing Phyrexian Walker, putting a +1/+1 counter on Bloodflow Connoisseur Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite storm count