Lurrus of the Dream-Den, Flickering Hound, Phyrexian Altar, and Ornithopter

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Phyrexian Altar on the battlefield
• Ornithopter in hand or in the graveyard

Steps

1. Cast Ornithopter by paying
2. Flickering Hound triggers, blinking Lurrus
3. Resolve the Ornithopter spell
4. Then, activate Phyrexian Altar by sacrificing Ornithopter, adding one mana of any color Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite storm count