The Book of Nine Swords

Tome of Battle: The Book of Nine Swords for D&D 3.5 is a core supplement introducing the "Sublime Way," a martial arts system of "maneuvers" and "stances" inspired by martial arts fiction, providing new combat options beyond standard spells and feats, with new classes (Swordsage, "Warblade," "Crusader") and feats to master nine distinct martial disciplines for more dynamic melee combat. It offers flavorful, almost magical, abilities for martial characters, adding depth to combat through unique stances and powerful strikes that blend weapon mastery with spiritual focus.