The Colorless

The Colorless is something of a ghost ship, hiding in a grotto cavern except for full and crescent moons to prey on ships along the Sword Coast, it is maintained by a small society illithids and staffed by grimlocks. The illithids that sail and captain the ship cast Fog Cloud as the ship travels to hide their travel, once near a ship they attack the sailors and have the grimlocks board it, killing or capturing everyone they can to bring back as prey for the mind flayers.