Rootha, Mercurial Artist + Turnabout + Vivien, Champion of the Wilds

Mana needed: {U}

GUR identity

Commander legal

The 3 combo pieces

What must be in place

Lands you control can tap to produce at least {4}{U}{R}.

How to execute it

  1. Activate all mana-producing lands you control by tapping them, adding at least {4}{U}{R}.
  2. Cast Turnabout by paying {2}{U}{U}.
  3. Holding priority, activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Turnabout.
  4. Resolve the copy of Turnabout, untapping all lands you control.
  5. Activate all mana-producing lands you control by tapping them, adding at least {4}{U}{R}.
  6. Cast Rootha by paying {1}{U}{R}.
  7. Repeat from step 3.

What the combo produces