Lurrus of the Dream-Den, Flickering Hound, Ashnod's Altar, and Crimson Kobolds

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Ashnod's Altar on the battlefield
• Crimson Kobolds in hand or in the graveyard

Steps

1. Cast Crimson Kobolds by paying
2. Flickering Hound triggers, blinking Lurrus
3. Resolve the Crimson Kobolds spell
4. Then, activate Ashnod's Altar by sacrificing Crimson Kobolds, adding Repeat

Results

• Infinite colorless mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite storm count