Wildhunt Elite
(Races of Eberron, page 116, DnD 3.5)
[Shifter]
Your shifter-enhanced instincts and senses allow you to detect concealed and invisible creatures.
Prerequisite
Shifter with the wildhunt trait
Benefit
While shifting, your nonvisual senses improve to such a degree that you gain the blindsense ability out to 30 feet (see page 306 of the Monster Manual).