How can you create a combo with Traxos, Scourge of Kroog, Retraction Helix?
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[START OF COMBO]This combo can be formed with Traxos, Scourge of Kroog, Retraction Helix

Color identity: U
Mana cost: {U}
Steps:
  1. Cast Retraction Helix by paying {U}, targeting Traxos.
  2. Cast any historic card from your hand by paying {0}.
  3. Traxos triggers, untapping itself.
  4. Activate Traxos by tapping it, returning the historic card from the battlefield to your hand.
  5. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Traxos, Scourge of Kroog must be on the battlefield
  - Retraction Helix must be in your hand
  - You have a historic card in hand with mana value zero.
  - Traxos does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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