Zacama, Primal Calamity, Sawtooth Loon, and Yarok, the Desecrated

Prerequisites

• Zacama, Primal Calamity in hand or in the command zone
• Sawtooth Loon in hand
• Yarok, the Desecrated on the battlefield

Steps

1. Activate all mana-producing lands you control by tapping them
2. Cast Zacama either from your hand or from the command zone by paying plus commander tax, if applicable
3. When Zacama enters, its ability triggers twice through Yarok
4. Resolve the first Zacama trigger, untapping all lands you control
5. Activate all mana-producing lands you control by tapping them
6. Resolve the second Zacama trigger, untapping all lands you control
7. Cast Sawtooth Loon by paying its mana cost
8. When Sawtooth Loon enters, its ability triggers twice, causing you to return itself and Zacama to your hand, draw four cards, and put four cards on the bottom of your library
9. Repeat

Results

• Destroy all artifacts and enchantments opponents control
• Infinite creature ETB
• Infinite creature LTB
• Infinite damage to creatures
• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana lands you control can produce
• Infinite storm count
• Infinite draw triggers
• Put a selection of creature cards from your library into your hand