A remnant of the once powerful elves living in Dire Maul, yet still wise and knowledgeable about great secrets.
The Shen'dralar was a faction of Highborne within Dire Maul. You could gain reputation with them by turning in librams and class books, and getting to Exalted with them counted towards the feat Insane in the Membrane. The faction was removed from the game as of patch 4.0.1 and no longer counts towards Insane in the Membrane. A new feat for those who have gotten Exalted with the faction was introduced in patch 4.1.0: Agent of the Shen'dralar.