Zacama, Primal Calamity, Enduring Renewal, and Altar of Dementia

Prerequisites

• Zacama, Primal Calamity on the battlefield
• Enduring Renewal on the battlefield
• Altar of Dementia on the battlefield
• Lands you control can tap to produce at least

Steps

1. Activate all mana-producing lands you control can tapping them, adding at least
2. Activate Altar of Dementia by sacrificing Zacama
3. Zacama dies, triggering Enduring Renewal, returning Zacama to your hand from your graveyard
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Zacama's power
5. Cast Zacama by paying
6. Zacama triggers, untapping all lands you control
7. Repeat
8. Once you have infinite mana, you may use it to activate Zacama's abilities

Results

• Infinite damage to creatures
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite mana lands you control can produce
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count