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

Color identity: U
Mana cost: 
Steps:
  1. Activate up to five lands you control by tapping them, adding at least {3}{U}.
  2. Cast Whim of Volrath with buyback by paying {2}{U}, targeting Treachery.
  3. Orvar's first ability triggers, causing you to create a copy of Treachery and attach it to any creature.
  4. The Treachery token enters the battlefield, causing you to untap up to five lands.
  5. Resolve Whim of Volrath, changing nothing and returning it to your hand.
  6. Repeat.
  7. Once you have infinite mana, you can target any other permanents you control in step 2 to get infinite token copies of them.[END OF COMBO STEPS]

Result:
  - Gain control of all creatures
  - Infinite copies of permanents you control
  - 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
  - Treachery must be on the battlefield
  - Whim of Volrath must be in your hand
  - You control up to five lands that can tap to produce at least {3}{U}.
[END OF COMBO PREREQUISITES]
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