The Order of Ad'grul

This is a mysterious and sinister cult that worships an eldritch entity known as the Ad'grul. They are composed of aberrant beings, such as mind flayers and aboleths, creations of the Forgotten Ones. Their leader is the Master of Whispers, a shadowy figure who is said to be the vessel of Ad'grul. Their Region, Skuggi, is drowned in an endless darkness that extends far and wide. Growing crops is practically impossible for its inhabitants, and in the nighttime, when seeing in front of you becomes an impossibility, they arrive. The Shadow Storms swarm the land, killing, maiming and draining all they come across. It is not every night that the shadows roam the land, but they always come at night. The Shadows fear the Light, and so one must stay inside and have a source of light, or may the Gods have mercy on their soul.