Mask

mask, the Lord of Shadows, is the god of shadows and thieves in the Faerûnian pantheon. This loner was most often associated with thieves or those of otherwise ill-repute. He is now a chaotic neutral intermediate deity from the Shadow Keep in the Plane of Shadow, whose portfolio included shadows, thievery and thieves, and previously also included intrigue. Mask's symbol is a black velvet mask tinged with red. Did I mention he likes shadows?

Turns out he's the son of Shar as befits his shadowy nature. He also took the form of the sword Godsbane which his MILF used to shank her OP Mary Sue daughter-goddess of magic - Mystra - during the 5E nukening/reset/second sundering. So the epic deity porno entitled: 'dusky MILF uses son to penetrate his sister' is accurate.

His clerics are known as 'Demarchs' even though they don't rule subsections of ancient Greece.

Sayings; By Masks mask!