How can you create a combo with Orvar, the All-Form, Great Whale, Whim of Volrath?
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[START OF COMBO]This combo can be formed with Orvar, the All-Form, Great Whale, Whim of Volrath

Color identity: U
Mana cost: 
Steps:
  1. Activate up to seven lands you control by tapping them, adding at least {3}{U}.
  2. Cast Whim of Volrath with buyback by paying {2}{U}, targeting Great Whale.
  3. Orvar's first ability triggers, creating a token copy of Great Whale.
  4. The Great Whale token enters the battlefield, untapping up to seven lands.
  5. Resolve Whim of Volrath, returning it to your hand.
  6. Repeat.
  7. Once you have infinite mana, you can target any permanents you control in step 2 to create infinite token copies of them.[END OF COMBO STEPS]

Result:
  - Infinite copies of permanents you control
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite magecraft triggers
  - Infinite mana lands you control can produce
  - Infinite storm count
  - Infinite untap of lands you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Orvar, the All-Form must be on the battlefield
  - Great Whale must be on the battlefield
  - Whim of Volrath must be in your hand
  - You control up to seven lands that can tap to produce at least {3}{U}.
[END OF COMBO PREREQUISITES]
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