How can you create a combo with Isochron Scepter, The Blackstaff of Waterdeep, Vitalize?
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[START OF COMBO]This combo can be formed with Isochron Scepter, The Blackstaff of Waterdeep, Vitalize

Color identity: GU
Mana cost: {U}
Steps:
  1. Activate all mana-producing creatures you control by tapping them, adding at least {3}.
  2. Activate The Blackstaff of Waterdeep by paying {1}{U} and tapping it, causing Isochron Scepter to become a 4/4 artifact creature.
  3. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Vitalize without paying its mana cost.
  4. Resolve Vitalize, untapping all creatures you control.
  5. Activate all mana-producing creatures you control by tapping them, adding at least {3}.
  6. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite magecraft triggers
  - Infinite mana creatures you control can produce
  - Infinite storm count
  - Infinite untap of creatures you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Isochron Scepter must be on the battlefield
  - The Blackstaff of Waterdeep must be on the battlefield
  - Vitalize must be exiled
  - Creatures you control can tap to produce at least {3}.
[END OF COMBO PREREQUISITES]
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