Castle on the Hill (5E)

From the introduction: This is the seventh installment of the Darkenfold Adventures. It is designed for 3-5 characters in the mid to high-level range. The party is confronted with the power of the Green Wizard. The adventure takes place along the banks of the Mistbane River near its confluence with the Powder River. This adventure is a set piece adventure that pits the party against the might of the Green Wizard and his dungeons beneath the Castle on the Hill.