How can you create a combo with Tekuthal, Inquiry Dominus, Viral Drake, Cryptic Trilobite, Crystalline Crawler?
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[START OF COMBO]This combo can be formed with Tekuthal, Inquiry Dominus, Viral Drake, Cryptic Trilobite, Crystalline Crawler

Color identity: U
Mana cost: {3}{U}
Steps:
  1. Activate Viral Drake by paying {3}{U}, putting two +1/+1 counters on Cryptic Trilobite and Crystalline Crawler.
  2. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding {U}.
  3. Activate Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding {C}{C}{C}{C} that can only be spent to activate abilities.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite +1/+1 counters on Cryptic Trilobite and Crystalline Crawler
  - Infinite colored mana
  - Infinite colorless mana that can only be spent to activate abilities
  - Infinite proliferate[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Cryptic Trilobite and Crystalline Crawler each have at least one +1/+1 counter on it.
[END OF COMBO PREREQUISITES]
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