Isochron Scepter + March of the Machines + Vitalize

GU identity

Commander legal

The 3 combo pieces

What must be in place

You control creatures that can tap to produce at least {3}.

How to execute it

  1. Activate creatures you control by tapping those, adding {3}.
  2. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Vitalize without paying its mana cost, untapping all creatures.
  3. Repeat

What the combo produces