Blindfighting

Dexterity is increased by +1

Years of training has taught you how to overcome fighting foes in dark areas. You gain blindsight in a 5ft radius when you are denied the ability to see your foes.  Drow have learned to use this ability while in conjunction with their darkness innate spellcating ability.  While within a darkness spell, a drow has blindsight within the confines of the darkness spell's radius.