Needs review
Source: Kalamar's Player Guide

Description: You can shoot at things you cannot see.

Prerequisites: DEX 13, Point Blank Shot, Precise Shot

By using their senses your character can target an unseen target as if they were invsibile (50% miss chance). The target may be invisible, beyond the character's range of sight or 100% concealed. It may not be a target around a wall, on another plane, or otherwise out of range.