Insightful Strike, Greater p. 64
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.
If the attack roll was a critical threat, and you confirmed it, stack the multipliers as normal. For example, a critical hit with a longsword (a ×2 multiplier) would cause this strike to deal damage equal to 3 × your Concentration check result.