How can you create a combo with Crystalline Crawler, Simic Ascendancy, Pir, Imaginative Rascal, Doubling Season?
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[START OF COMBO]This combo can be formed with Crystalline Crawler, Simic Ascendancy, Pir, Imaginative Rascal, Doubling Season

Color identity: GU
Mana cost: {1}{G}{U}
Steps:
  1. Activate Simic Ascendancy by paying {1}{G}{U}, putting four +1/+1 counters on Crystalline Crawler.
  2. Simic Ascendancy triggers, putting sixteen growth counters on it.
  3. Activate Crystalline Crawler's second ability by removing three +1/+1 counters from it, adding {1}{G}{U}.
  4. Repeat.
  5. At the beginning of your next upkeep, Simic Ascendancy triggers, causing you to win the game.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters
  - Infinite colored mana
  - Win the game at the beginning of your next upkeep[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
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