Inaccurate?

Unseen Arrow

( Tome of Magic, p. 138)

[General]

Developed by shadowblades, this fear allows a member of that class to apply his unseen weapon abilities to thrown or projectile weapons.

Prerequisite

Unseen weapon class feature,

Benefit

You can apply the unseen weapon class feature, and all its abilities, to a thrown or missile weapon. if you use the far shadow ability (see page 130) with a ranged weapon, it adds 30 feet to the distance the weapon can travel before you take the first range increment penalty