West Marches: Westmoor
Sorcerer King Thienerdhald
Thienderdhald, Sorcerer King Thriced cursed.
His tomb is located to the south east of town. He was king during the end of a dwarf war between dwarfs and elves. He died but his magic could not be contained easily. Someone built his tomb around him to try and contain him, but since his magic could not escape it turned inward creating a portal to another realm.
His spirit and corpse is currently located in an Impossible Castle on another plane. He has gathered quick a bit of strength since the portal has been opened. There have been hints that his corpse is heavily guarded, and that destroying the corpse is the only way to defeat him fully.