Lurrus of the Dream-Den, Flickering Hound, Altar of Dementia, and Crimson Kobolds

Prerequisites

• Lurrus of the Dream-Den on the battlefield
• Flickering Hound on the battlefield
• Altar of Dementia 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 Altar of Dementia by sacrificing Crimson Kobolds, causing a player to mill a number of cards equal to the sacrificed creature's power Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite mill
• Infinite self-mill
• Infinite storm count