Insightful Strike, Greater

(Tome of Battle: The Book of Nine Swords, page 64, DnD 3.5)

Diamond Mind (Strike)

Level: ; Swordsage 6; Warblade 6
Prerequisite: Two Diamond Mind maneuvers
Casting Time: 1 standard action
Range: Melee attack
Target: One creature

Your keen eye picks out the slightest imperfection in your opponent’s defenses. Your weapon becomes a tool of your mind.

This maneuver functions like insightful strike, except that you deal damage equal to 2 × your concentration check result.