Lurrus of the Dream-Den, Flickering Hound, Phyrexian Walker, and Phantom Train

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Phyrexian Walker in hand or in the graveyard
• Phantom Train 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 Phantom Train by sacrificing Phyrexian Walker, putting a +1/+1 counter on Phantom Train and causing it to become a creature until end of turn 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