This is the dark shadow hidden within House Vadalis. The magebreeders of the Feral Heart seek to unleash the full potential of the natural world—no matter how horrific. They have been uncovering the forbidden techniques of the Seryan line, and even searching for the tools of the daelkyr in hopes of creating living weapons of war. The Dragon Below cultist Mazina is secretly using the Heart as a cover to bring fiendish spirits into the world. Will PCs who fight the beasts of the Feral Heart discover the secrets of their makers?