Source: Player's Guide to Faerûn
Your folk are known for their mystic power and seem to transcend their mortal forms. Your inner radiance is so strong that you are more than mortal.
Prerequisite: Deep Imaskari (Underdark [Deep Imaskar]), elf (Evermeet, Sildeyuir), or spirit folk (Ashane).
Benefit: You are a native outsider, not a humanoid. You have darkvision out to 60 feet. Furthermore, you gain a +2 bonus on all Diplomacy checks.
Special: You may select this feat only as a 1st-level character. You may have only one regional feat.