Zacama, Primal Calamity, Panharmonicon, and Sparkcaster

Prerequisites

• Zacama, Primal Calamity in hand or in the command zone
• Panharmonicon on the battlefield
• Sparkcaster in hand
• Lands you control can tap to produce at least
• plus enough mana to pay for commander tax, if applicable available

Steps

1. Activate all mana-producing lands you control by tapping them, adding at least
2. Cast Zacama either from your hand or from the command zone by paying plus commander tax, if applicable
3. When Zacama enters the battlefield, it triggers twice
4. Resolve the first trigger, untapping all lands you control
5. Activate all mana-producing lands you control by tapping them, adding at least
6. Resolve the second Zacama trigger, untapping all lands you control
7. Cast Sparkcaster by paying
8. When Sparkcaster enters the battlefield, its first and second abilities trigger twice
9. Resolve the first Sparkcaster triggers, returning itself and Zacama from the battlefield to your hand
10. Resolve the second Sparkcaster triggers, dealing 2 damage to target player or planeswalker
11. Repeat
12. Once you have infinite mana, you may use it to activate Zacama's other abilities

Results

• Infinite damage
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite mana lands you control can produce
• Infinite storm count