Heurodis is an antagonist in the Shadows of Undrentide campaign. Spoiler warning: Plot and/or ending details follow. Image:Heurolich.jpg Heurodis is a medusa wizard who was once an apprentice to the dread lich Belpheron, a scholar of ancient Netheril. She somehow managed to escape undetected when the Harpers destroyed Belpheron and his other apprentices. Years later she began a plot to claim the ancient Netherese magic for herself and subject all Faerûn to herself. This set in motion the events of the Shadows of Undrentide campaign, where she is featured as the final boss.