My players have decided to go the long way around to the House of the Beasts and will be stopping by the cursed Onyx Hall (Vol 2 p54). Basically it is a cursed manor house rumored to contain a lot of treasure and has not been grave robbed in 200 years. The group is currently level 5 and mythic tier 2.
I'm looking for ideas for curses/themes. I like the idea of the further they get into the manor house a swarm/horde of undead drag them in further. Kind of like a horror house. I was thinking of hag/witch with lots of curses also and then slaves/former owners that are mad that they got cursed. The curse comes from a slave whose family was spread to all corners of Golarion and can only be lifted when all the stones of the manor burn down.
Any thoughts or ideas are appreciated.