How can you create a combo with New Horizons, Dryad Arbor, Pemmin's Aura?
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[START OF COMBO]This combo can be formed with New Horizons, Dryad Arbor, Pemmin's Aura

Color identity: GU
Mana cost: 
Steps:
  1. Activate Dryad Arbor by tapping it, adding {U}{U}.
  2. Activate Pemmin's Aura's first ability by paying {U}, untapping Dryad Arbor.
  3. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - New Horzions and Pemmin's Aura attached to Dryad Arbor.
  - Dryad Arbor does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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