Mask

Mask, the Lord of Shadows, is the Neutral Evil god of intrigues, shadows, thievery and shadowy business in general.

During the Time of Troubles
During the Time of Troubles Mask took the form of a powerful magic sword called Godsbane. The sword changed several mortal "owners" during the period, eventually falling in the hands of Cyric, who used it to slay Bhaal.

In-game References
Short Sword of Mask is named after the god Mask.