How can you create a combo with Polukranos, Unchained, Vigor, Crystalline Crawler?
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[START OF COMBO]This combo can be formed with Polukranos, Unchained, Vigor, Crystalline Crawler

Color identity: BG
Mana cost: {1}{B}{G}
Steps:
  1. Pay {1}{B}{G} to have Polukranos fight Crystalline Crawler.
  2. Vigor prevents the damage, putting a +1/+1 counter on Polukranos and four +1/+1 counters on Crystalline Crawler.
  3. Remove three +1/+1 counters from Crystalline Crawler to add {1}{B}{G}.
  4. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
  - Polukranos has at least four +1/+1 counters on it.
[END OF COMBO PREREQUISITES]
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