Rootha, Mercurial Artist + Turnabout + Twinning Glass

Mana needed: {2}{U}{U}{U}{R} plus enough mana to pay for commander tax, if applicable

UR identity

Commander legal

The 3 combo pieces

What must be in place

Artifacts you control can tap to produce at least {4}.

How to execute it

  1. Activate all mana-producing artifacts you control by tapping them, adding at least {4}.
  2. Cast Rootha either from your hand or from the command zone by paying {1}{U}{R} plus commander tax, if applicable.
  3. Cast Turnabout by paying {2}{U}{U}.
  4. Holding priority, activate Rootha by paying {2} and returning it from the battlefield to your hand, copying Turnabout.
  5. Activate Twinning Glass by paying {1} and tapping it, casting Rootha without paying its mana cost.
  6. Resolve the copy of Turnabout, untapping all artifacts you control.
  7. Activate all mana-producing artifacts you control by tapping them, adding at least {4}.
  8. Repeat from step 4.

What the combo produces