Enduring Renewal, Altar of Dementia, and Flamecache Gecko

Prerequisites

• Enduring Renewal on the battlefield
• Altar of Dementia on the battlefield
• Flamecache Gecko in hand
• available

Steps

1. Cast Flamecache Gecko by paying its mana cost
2. When Flamecache Gecko enters, it triggers, adding
3. Activate Altar of Dementia by sacrificing Flamecache Gecko
4. When Flamecache Gecko dies, Enduring Renewal triggers, returning Flamecache Gecko from your graveyard to your hand
5. Resolve the Altar of Dementia ability, causing a player to mill a number of cards equal to the sacrificed creature's power
6. Repeat

Results

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