Shadow Shot

Using both speed and pin-point precision, the caster is able to fire 1 shot in the shadow of the one already fired, so that it goes unnoticed by the target until it hits. Both attacks use the same attack roll and will deal standard damage (although additional damage, such as sneak attack damage does not apply to the additional shot), but unless the opponent succeeds a Perception check (DC 20), he will fail to notice the second shot and loses his Dexterity bonus to AC against the second shot, so that even if the first missed, the second may still hit. Blind creatures are not affected by this technique.