How can you create a combo with God-Eternal Kefnet, Jace, the Mind Sculptor, Walk the Aeons?
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[START OF COMBO]This combo can be formed with God-Eternal Kefnet, Jace, the Mind Sculptor, Walk the Aeons

Color identity: U
Mana cost: {2}{U}{U} each turn
Steps:
  1. Activate Jace's zero loyalty ability, putting Walk the Aeons on top of your library.
  2. Move to your next turn.
  3. On your next draw step, when you draw Walk the Aeons, reveal it due to Kefnet's ability, making a copy that costs {2} less to cast.
  4. Cast the copy for {2}{U}{U}, granting you an extra turn.[END OF COMBO STEPS]

Result:
  - Infinite turns[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - God-Eternal Kefnet must be on the battlefield
  - Jace, the Mind Sculptor must be on the battlefield
  - Walk the Aeons must be in your hand
[END OF COMBO PREREQUISITES]
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