It is not known who made this dagger, but it is the twin-blade of Bone Razor, Good-bane. It is not known exactly who has carried it in the past, but it has been popular with drow noblity.

Abilities
+4, add +1d6 to hit against good-alligned characters.
Can cast Cure Serious Wounds 3 times a day.
 
+1 to all saves, acts as a light source with a radius of 20'.