Aggravated Assault + Spellbinder + Turnabout

UR identity

Commander legal

The 3 combo pieces

What must be in place

Spellbinder attached to a creature that cannot be blocked and killed by an opponent.
The creature with Spellbinder attached can attack this turn.
Lands you control can tap to produce at least {3}{R}{R}.

How to execute it

  1. Deal combat damage with the creature that has Spellbinder attached.
  2. Spellbinder triggers, casting a copy of Turnabout without paying its mana cost.
  3. Resolve Turnabout, untapping all tapped lands you control.
  4. Move to your postcombat main phase.
  5. Activate all mana-producing lands you control by tapping them, adding at least {3}{R}{R}.
  6. Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and causing you to get an addtional combat phase and main phase after this one.
  7. Repeat.

What the combo produces