Dragon's Flame(Tome of Battle: The Book of Nine Swords, p. 53)
Desert Wind (Strike) [Fire]
Level: Swordsage 5,
Casting Time: 1 standard action
Range: 30 ft.
Saving Throw: Reflex half
With a defiant roar, you summon your ki and unleash it, igniting it with a combination of your meditative focus and seething fury.
As a master of the Desert Wind advances in his studies, he learns to stoke raging fires with his ki. This maneuver allows you to generate a gout of fire similar to a dragon’s burning breath. With this maneuver, you blast forth a cone of fire that deals 6d6 points of fire damage to everything in the area. Creatures in the area can attempt Reflex saves (DC 15 + your Wis modifier) for half damage.
This maneuver is a supernatural ability.