This looks like a normal item of its kind except for a faint, blue sheen.

A soulbound weapon serves as a receptacle for your essentia, much as a soulmeld does. Every point of essentia invested in the weapon increases its enhancement bonus on attack rolls and damage rolls by 1, up to a maximum enhancement bonus of +3.
Each soulbound weapon has an essentia capacity. The maximum number of essentia points that can be invested in it equals this value or your normal essentia capacity (see Table 2–1: Essentia Capacity, Magic of Incarnum 19), whichever is lower.
A soulbound weapon has a maximum essentia capacity of 2.
Chakra Bind: A soulbound weapon grants bonuses when it is bound to a chakra, as described below. These effects function continuously, with no need for activation. See Binding Items to Chakras (MoI 108) for more information.
Arms: Binding a soulbound weapon to your arms chakra grants you a +2 insight bonus on rolls made to confirm critical hits with the weapon.
Brow: Binding a soulbound weapon to your brow chakra allows you, if you miss an attack because of concealment, to reroll your miss chance percentile roll one time to see if you actually hit. This benefit is usable once per round.
Hands: Binding a soulbound weapon to your hands chakra grants you a +2 insight bonus on initiative checks while the weapon is held.

Prerequisites: Craft Magic Arms and Armor, magic weapon, essentia pool 2.
Cost to Create: 1,000 gp (plus 300 gp for base item), 80 XP, 2 days.