Activate the teleportation runes to enter Sef's Retreat.
This used to be a Drust shrine. There is a series of sigils that, once invoked, will allow us to teleport to my old sanctum. <Sef looks around somewhat confused and clears her throat.> It has been centuries since I've been here, I'm having a bit of trouble remembering the order in which the sigils need to be activated to open the portal. I hope you're feeling adventurous. Oh, and be cautious. I enchanted the runes to keep would be intruders out by force.