Darkstalker

 
Prerequisite(s): None
 
Benefit: When you hide, creatures with blindsense, blindsight, scent or tremorsense must make a Listen check or a Spot check (Whichever is higher) to notice you. You cannot hide in plain sight unless you have that ability as a class feature. In addition, you can flank creatures that have the all-around vision special quality.
 
Source: Lords of Madness