Curse of the beast lord/Princes of hell.
Crown of Champions
This crown was found at the top of the Challenge Tower that the group entered after coming out of the desert. When Gabrielle put on the crown she felt stronger (gives her s +2 to STR and CON). In addition, the crown gives her an aura of a champion (has not fully been explored). According to the scroll left with it there are two more gems for the crown.