Mirror of Loss (spoilers)

[heart_of_the_tiger]

Has anyone found out what to do with the thing?

[ZeUwUbs]

Well, from what I gather, here is how it works:

If you suceed the Arcana roll, you may commune with the mirror.
From there you have the following options:

Option 1) Suceeding the Arcana check before staring into the mirror
This allows you to either sacrefice a relic (i.e. the Necromancy Tome) OR get cursed, loosing 2 points of a characteristic of your choosing. (You can remove this effect by casting remove curse).
In terturn, you gain the knowledge of why the customer on the outside has visited the place. But it does not appear to give you any kind of quest rewards.

Option 2: Religion Check to examine the mirror
Leads to the same results as Option 1)

Option 3) Offering a prayer
It gives you Guidence for 10 rounds
If you run out of the Guidence, you can talk communicate with the mirror again.
At this point, it bestows the cures from Option 1 on you (which you can remove), but also grants you +2 to an atribute of your choosing. (This buff does not disappear after you use remove curse on it.)
It also gives you Guidence for 10 rounds again

Option4) Suceed Both to Identify and to offer a prayer
it gives you +2 to one of your main Atributes (i.e. Charisma, Wisdom, Int, etc..). without any of the drawbacks. the Narator says It says that it has taken something away, but your character is not aware of what it is. (I have not figured that out yet myself.)

[heart_of_the_tiger]

Thank you, though the mirror I was referring to was the broken one in the temple of Shar in the second chapter. I didn't know another one existed at the time.

[M1LLNER]

Only way I got it to work was to do the religion prayer, make the religion check to tell what it was, take a curse (get nothing but some useless info), interact with it again and get another curse, then I was able to choose a reward.

Not sure why I had to do it twice. A single greater restoration from shadowheart removed both curses.

[53yoGamer]

I do not even know how to get off from there because 3 of 4 characters are not strong enough to jump back up.

[heart_of_the_tiger]

Just use the teleport