Dualcaster Mage + Riptide Laboratory + Turnabout

Mana needed: {4}{U}{U}{U}{R}{R}

UR identity

Commander legal

The 3 combo pieces

What must be in place

Other lands that can produce {2}{U}{R}{R} on the battlefield.

How to execute it

  1. Cast Turnabout by paying {2}{U}{U}, targeting any land you control.
  2. Holding priority, cast Dualcaster Mage by paying {1}{R}{R}.
  3. Dualcaster Mage enters the battlefield, copying Turnabout.
  4. Holding priority, activate Riptide Laboratory by paying {1}{U} and tapping it, returning Dualcaster Mage to your hand.
  5. Resolve the Turnabout copy, untapping all lands you control.
  6. Repeat from step 2.

What the combo produces