You have to cast stoneskin and mirror Image from a scroll ?
What spell selection does Kelsey have then ?
You might wanna try the merchant above the Den of seven Vales,.. he might have them. Or else the thief in the thief-compound ( Aran linvail's building )..
I'm not sure they have the scrolls though
A more general advice .. the key to Kuriosan is usually non-enchanted weapons.
He likes to cast PfMW, so the only way of hurting him and eating away his stoneksin is usually normal weapons.
Have one man act as a decoy,.. while the others use summons and pelt him with ranged weapons.
Also ( if you havent already ) use the search-function : quite a lot of posts with tips you might be able to use.
Hope it helpz [img]smile.gif[/img]