How can you create a combo with Hidetsugu and Kairi, Clone Legion, Eternal Witness?
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[START OF COMBO]This combo can be formed with Hidetsugu and Kairi, Clone Legion, Eternal Witness

Color identity: BGU
Mana cost: {7}{U}{U}
Steps:
  1. Cast Clone Legion by paying {7}{U}{U}, causing you to create a token copy of Hidetsugu and Kairi and Eternal Witness.
  2. Put the token Hidetsugu and Kairi into your graveyard due to the legend rule.
  3. The Hidetsugu and Kairi token's first and second abilities trigger, as well as Eternal Witness.
  4. Resolve the Eternal Witness trigger, returning Clone Legion from your graveyard to your hand.
  5. Resolve the first Hidetsugu and Kairi trigger, causing you to draw three cards and then put Clone Legion and another card on top of your library, ensuring Clone Legion is on top.
  6. Resolve the second Hidetsugu and Kairi trigger, exiling Clone Legion from the top of your library, then causing an opponent to lose 9 life and allowing you to cast Clone Legion from exile without paying its mana cost.
  7. Resolve Clone Legion, causing you to create a token copy of Hidetsugu and Kairi and Eternal Witness.
  8. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite draw triggers
  - Near-infinite copies of creatures you control
  - Near-infinite creature tokens
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite lifeloss
  - Near-infinite leaves the battlefield
  - Near-infinite magecraft triggers
  - Near-infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Hidetsugu and Kairi must be on the battlefield
  - Clone Legion must be in your hand
  - Eternal Witness must be on the battlefield
[END OF COMBO PREREQUISITES]
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