How can you create a combo with Agatha's Soul Cauldron, Heroes' Bane, Crystalline Crawler?
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[START OF COMBO]This combo can be formed with Agatha's Soul Cauldron, Heroes' Bane, Crystalline Crawler

Color identity: G
Mana cost: {2}{G}{G}
Steps:
  1. Activate Crystalline Crawler using Heroes' Bane's ability by paying {2}{G}{G}, putting a number of +1/+1 counters on Crystalline Crawler equal to its power.
  2. Activate Crystalline Crawler's first ability four times by removing four +1/+1 counters from it, adding {2}{G}{G}.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colored mana
  - Infinite +1/+1 counters on Crystalline Crawler[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Agatha's Soul Cauldron must be on the battlefield
  - Heroes' Bane must be exiled
  - Crystalline Crawler must be on the battlefield
  - Crystalline Crawler has power 5 or greater and has at least one +1/+1 counter on it.
[END OF COMBO PREREQUISITES]
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