How can you create a combo with Nivix Guildmage, Turnabout?
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[START OF COMBO]This combo can be formed with Nivix Guildmage, Turnabout

Color identity: UR
Mana cost: {2}{U}{U}
Steps:
  1. Cast Turnabout, choosing to untap lands.
  2. Pay {2}{U}{R} to activate Nivix Guildmage's second ability, copying turnabout and untapping your lands.
  3. Tap lands to produce {3}{U}{R}.
  4. Activate Nivix and additional time and repeat the process.[END OF COMBO STEPS]

Result:
  - Infinite colored mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Nivix Guildmage must be on the battlefield
  - Turnabout must be in your hand
  - You control lands that can produce {3}{U}{R}.
[END OF COMBO PREREQUISITES]
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