"In the beleageured city of Khaim, a lone alchemist seeks a solution to a deadly threat. The bramble, a plant that feeds upon magic, now presses upon Khaim, nourished by the furtive spellcasting of its inhabitants and threatening to strangle the city under poisonous vines. Driven by desperation and genius, the alchemist constructs a device that transcends magic, unlocking the mysteries of bramble'as essential nature. But the power of his newly-built balanthast is even greater than he dreamed. Where he sought to save a city and its people, the balanthast has the potential to save the world entire--if it doesn't destroy him and his family first."--Publisher's description.