How can you create a combo with Kelpie Guide, Pemmin's Aura?
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[START OF COMBO]This combo can be formed with Kelpie Guide, Pemmin's Aura

Color identity: U
Mana cost: 
Steps:
  1. Activate any mana-producing permanent you control by tapping it, adding at least {1}{U}.
  2. Activate Kelpie Guide's first ability by tapping it, untapping the mana-producing permanent.
  3. Activate Pemmin's Aura's first ability by paying {U}, untapping Kelpie Guide.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite mana permanents you control can produce[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Pemmin's Aura attached to Kelpie Guide.
  - Kelpie Guide does not have summoning sickness.
  - You control a permanent that can tap to produce at least {1}{U}.
[END OF COMBO PREREQUISITES]
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