How can you create a combo with Kinnan, Bonder Prodigy, Machine God's Effigy, Horseshoe Crab?
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[START OF COMBO]This combo can be formed with Kinnan, Bonder Prodigy, Machine God's Effigy, Horseshoe Crab

Color identity: GU
Mana cost: {4}
Steps:
  1. Cast Machine God's Effigy by paying {4}, choosing to have it enter the battlefield as a copy of Horseshoe Crab that is an artifact.
  2. Activate Machine God's Effigy by tapping it, adding {U}.
  3. Kinnan triggers, adding {U}.
  4. Activate Machine God's Effigy by paying {U}, untapping it.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite blue mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Kinnan, Bonder Prodigy must be on the battlefield
  - Machine God's Effigy must be in your hand
  - Horseshoe Crab must be on the battlefield
[END OF COMBO PREREQUISITES]
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