Zacama, Primal Calamity, Panharmonicon, and Shivan Wurm

Prerequisites

• Zacama, Primal Calamity in hand or in the command zone
• Panharmonicon on the battlefield
• Shivan Wurm 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 Shivan Wurm by paying
8. When Shivan Wurm enters the battlefield, it triggers twice, returning itself and Zacama from the battlefield to your hand
9. Repeat
10. If lands you control can tap to produce at least , this combo nets infinite mana, and you may use that mana to activate Zacama's other abilities

Results

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