these posters are set up in prominant locations throughout Sanctuary by an invisible figure when few townfolk are about
King Royce of the Golden Dubloons is collaborating with drow cultists of Ghaunadaur within Sanctuary to ressurect a drow lich named Temrariel. The cultists have offered him fifty thousand gold coins as well as the city of Sanctuary itself if he and his men can retrieve the knucklebones needed for the ceremony. His personal necromancer Azash is working directly under the tutelage of the high priest of Ghaunadaur, god of slimes, in order to better assist them when the time comes for the lich's resurrection. These plots were revealed behind closed doors in strictest of confidences.
The ruling Drow Houses of Traensyr won't let Temrariel rise again. If he does they will lay waste this city to destroy him. We will be undone from within and without. This is why the Noble Houses wish the bones back, to prevent the cultists from summoning Temrariel.
Extreme caution should be given when dealing with this man or his lapdogs, who bend the knee only to coin. The Beggar King will take what scraps the cultists deign throw in the dirt to advance his own name and station. Outlaw the Dubloons! They threaten the existance of us all. Don't give our city to the Beggar King!
-Sanctuary's Sons