How can you create a combo with Zirda, the Dawnwaker, Nivix Guildmage, Dramatic Reversal?
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[START OF COMBO]This combo can be formed with Zirda, the Dawnwaker, Nivix Guildmage, Dramatic Reversal

Color identity: URW
Mana cost: {1}{U}{U}{R}
Steps:
  1. Cast Dramatic Reversal by paying {1}{U}.
  2. Holding priority, activate Nivix Guildmage by paying {U}{R}, copying Dramatic Reversal.
  3. Resolve the Dramatic Reversal copy, untapping all nonland permanents you control.
  4. Activate all mana producing nonland permanents you control by tapping them, adding at least {1}{U}{R}.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite draw triggers
  - Infinite looting
  - Infinite magecraft triggers
  - Infinite mana nonland permanents you control can produce
  - Infinite tap triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Zirda, the Dawnwaker must be on the battlefield
  - Nivix Guildmage must be on the battlefield
  - Dramatic Reversal must be in your hand
  - Nonland permanents you control can tap to produce at least {1}{U}{R}.
[END OF COMBO PREREQUISITES]
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