You can focus your essence to grant you more precise and deadly critical strikes.
Prerequisites
Base attack bonus +1 and either Constitution 13 or veilweaver level 1.
Benefit
You can invest essence into this feat.
You gain an insight bonus equal to the invested essence on attack rolls made to confirm a critical hit and to the damage dealt by a successful critical hit. This damage is added to the weapon damage before being multiplied.
You gain 1 point of essence
Special
This feat counts as Critical Focus for the purpose of meeting prerequisites.