Requires

Spellbinder must be on the battlefield. Hellkite Charger must be on the battlefield. Turnabout must be in exile (exiled by Spellbinder). Spellbinder attached to a creature that cannot be blocked and killed by an opponent. Hellkite Charger and the creature with Spellbinder attached can attack this turn. Lands you control can tap to produce at least .

Steps

1. Declare Hellkite Charger and the creature with Spellbinder attached as attackers, triggering Hellkite Charger.
2. Holding priority, activate all mana-producing lands you control by tapping them, adding at least .
3. Resolve the Hellkite Charger trigger, causing you to pay to untap all attacking creatures and get an additional combat phase after this one.
4. Deal combat damage with the creature that has Spellbinder attached.
5. Spellbinder triggers, casting a copy of Turnabout without paying its mana cost.
6. Resolve Turnabout, untapping all tapped lands you control.
7. Repeat each combat phase.

Results