You can view the invisible world, just as well as the physical.
Prerequisite(s): Wis 13
Benefit: You may sense incorporeal spirits within 60 ft. of your position with a successful Perception check (DC 20). This ability works just as detect evil, detect magic or detect undead and requires a round of concentration to activate.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.