Enduring Renewal, Altar of Dementia, and Priest of Urabrask

Prerequisites

• Enduring Renewal on the battlefield
• Altar of Dementia on the battlefield
• Priest of Urabrask in hand
• available

Steps

1. Cast Priest of Urabrask by paying its mana cost
2. When Priest of Urabrask enters, it triggers, adding
3. Activate Altar of Dementia by sacrificing Priest of Urabrask
4. When Priest of Urabrask dies, Enduring Renewal triggers, returning Priest of Urabrask 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