Nightshadow

Nightshadow, also called Night Shadow, was the +4 longsword of quickness owned by Vhaeraun, the drow deity of thievery.

Description
Nightshadow was black like jet, one of the holy stones of Vhaeraun, and looked as though made from shadows. It also gleamed. It turned invisible in darkness.

The Masked Lord had the ability to change his size and the longsword to fit his size.

Powers
As mentioned above, Nightshadow had the ability to turn invisible in darkness. Vhaeraun could gain additional uses of bladebend while holding it.

History
How Vhaeraun came to own Nightshadow was unknown. The sword was used during his assault on Lolth in her state of hibernation during the Silence of Lolth, when he managed to grievously wound her.

The sword was also used in his assassination attempt against Eilistraee.