The  Draa'zekyl, also called drow-dragon, were a type of Shadow Dragon Drow that managed to split their heritage in two, and thus gained the ability to change their form from dragon to drow, and vice-versa as well as possessing the traits of both races without suffering the limitations of the Drow.

The reproduction of drow-dragons?not the act, but the result?is a mystery.
The drow-dragon was not a race that sprung up on its own. All drow-dragons traced their ancestry back to Clan Jaezred, a clan of shadow dragons who enslaved the drow of the remote city of Chaulssin.

Name: Deirfuir Scathanna
Translation: "shadowed sister"
{ o.o.c. note:  her name is pronounced:
              "day-FUHR sca-THAN-na" }
Sex:Female
Race: Draa'zekyl (Drow-Dragon)
Age: When in humanoid form appears to be a mature drow female in her mid 200s.