You have an uncanny sense for detecting invisible or noncorporeal creatures.
Benefit: When an incorporeal or invisible creature comes within 30 ft. of you, the DM makes a secret Perception check (DC 25). If this check is successful, you sense the creature’s presence. This does not require any concentration, however you do not know its location or nature. You simply feel that something or someone is watching you. Once it is determined that something is there, you may use the Sight feat to determine its location.
In addition, whenever someone scries your location you may make a Spot check (DC 30) to notice them.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.