*spoilers* and all that.
In Xzar's house is Shazzellim, added by UB. A rather nice scimitar it be. the description states:
This scimitar is of rather poor quality but beneath its surface lies great power and evil. Created for the sole purpose of slaying Harpers, Shazzellim is more than capable of that task. With one strike of the blade a bard must make a saving throw vs. spells or die. Crafted by a Red Wizard of Thay, the sword also has the ability to vocalize, which is why it was often given to fighter-mages in the service of the Wizards. Needless to say, possession of this sword would not be looked upon very highly by Harpers.
Anyway, I promptly gave it to my local non-good scimitar wielder, Jaheira. I was thinking, if this sword is so hated by the Harpers, it could be a springboard for all sorts of evil fun. At the least Jaheira could comment and refuse to use it. Edwin might want it's return to the Red Wizards. The Harpers could kick up a fuss and send folks after it, if its considered to be in bad hands. Or if they trust you, you could be asked to destroy it somehow.
Anyhows, I appreciate most of those suggestions are far more appropriate for the Questpack, but given that the scimitar is in UB, just wanted to mention it.