Re: The Martial Swashbuckler (3.5, ToB, WIP, PEACH, MAR)
In my mind, Diamond Mind does fit...
But I agree with NeoSeraphi here; a proper swashbuckler doesn't really fit with the Iron Heart discipline; it's a different fighting style.
Of all the ToB disciplines, it's right after Stone Dragon as a strong-but-few-blows discipline.
Except for Steel Wind.