d12 said:
So, my question is, why did the sorcerer curse the king and what will end the curse?
The (highish-level) sorcerer and his beautiful sister were visiting this city, curious about how its inhabitants thrived happily although they had little to no knwoledge of magic.
The king is not a good person, though, and when he sees the charming lady, he wants her. She turns his offers down, he gets angry.
One night, the king's guards get the girl in the middle of the night, take her to the king who abuses her and then kills her, throwing her body in some bottomless chasm.
When the sorcerer can't find his sister, the king openly supports the search of the girl, lending his help, but fruitlessly. However, the sorcerer find out the truth about that night, somehow, and unbeknownst to the king, starts working on a project of vengeance: it takes weeks, but he eventually creates a powerful magic item which will constantly attract vermin/monsters/whatever. To keep it active forever, though, he will need to sacrifice his own life and trap his own soul inside the object.
He writes a letter to the king (which the players should easily find), hides the object, summons/calls some monster (with the order to dispose of his corpse after his death) and at last takes his own life. The called monster throws the sorcerer's body in the same chasm where his sister lays and goes home. No traces of the body and the only hints about there being an object and its location are hidden among the obscure magic notes of the sorcerer, which none of the city dwellers can understand.
Thus, the city is deserted and the magic item keeps on attracting monsters.
The PC should easily find the letter (where the sorcerer tells the king that the city is doomed and it will be forever filled with monsters) in the king's halls. The letter should be detailed enough to let the PCs understand that there was a magic-user and he may have done something and that maybe in his chambers there could be some more evidence.
Sorcerer's chamber: there are his notes, and you can easily craft some puzzle within the notes, the solution of which will lead to the place where the magic object (with the sorcerer's soul) is hidden.
Rough and incomplete, but HTH.
Bye,
Ze