"On the other side of the woods, on the other side of the world, the Castle waits. Those who swear their lives to it are granted a fraction of its chaotic power. One, it is said, may become its master. A warlock patron based on a popular and over-the-top pop-culture series of games and streaming media whose name it would probably be best not to name because the author definitely cannot afford to be sued. Embody the children of the night and enjoy the music they make! Become an obscuring mist! Feel the dark power claim you! Become the regent of the Castle! A flavorful, over-the-top warlock subclass loaded with 5 new invocations suitable for any warlock, as well as 15 pact-specific invocations to bind your warlock ever-tighter to the otherworldly castle. Push open the doors. Step inside. Make yourself comfortable. You're there for life." (Author Summary)