This castle was the mysterious dwelling of the enigmatic lord known as Mistmaster. In the castle lived about a dozen people, most of them were servants of the Mistmaster. In this place it was possible also to meet some adventurers who acted as agents of the Mistmaster. When the castle was not enveloped by the fog, appeared as a triangle of three thin towers joined by walls. It was built on the ruins of an ancient elven fortress. Usually, the Mistmaster covered this area with illusions. The castle was well protected by powerful air elementals which readily chased away any intruders. Sometimes in extremely desperate situations, the lord of the citadel provided relief and hospitality to travellers.
In 1369 DR, a group formed by Blue Bear Tribe Uthgardt and demons attacked the citadel but were driven away by the Mistmaster, aided by his allies, his servants, and a host of fey gathered by Turlang the treant.