The Age of Sevastis
Evil Mysterious Entity
In his last moments, the King Ithir’dunn spoke of a Lord Sevastis, claiming him to be the one responsible for destroying the city of Hallowhall and placing him under a lethal curse.
Beyond that, all the party knows of the entity known as Sevastis is that he seems to enjoy playing with their heads. He has already plagued Borf, Ophelia and Lothien with horrifying visions.