How can you create a combo with Progenitor Mimic, Time Walk, Scholar of the Ages?
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[START OF COMBO]This combo can be formed with Progenitor Mimic, Time Walk, Scholar of the Ages

Color identity: GU
Mana cost: {1}{U} each turn
Steps:
  1. Cast Time Walk by paying {1}{U}, taking an extra turn after this one.
  2. At the beginning of your next upkeep, Progenitor Mimic triggers, creating a token copy of Scholar of the Ages.
  3. When the token Scholar of the Ages enters the battlefield, it triggers, returning Time Walk from your graveyard to your hand.
  4. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - Progenitor Mimic must be on the battlefield
  - Time Walk must be in your hand
  - Scholar of the Ages must be on the battlefield
[END OF COMBO PREREQUISITES]
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