The Battle for Amorina

Publisher's blurb: Caught between the armies of light and dark, the PCs must find a way to recover the artifact they have come for before they become involved in an epic battle, likely to tear the very Nexus asunder. From the introduction: Prince Lendir has sent his son Alamir and some of his best soldiers to attack Grugan. While numerically inferior to the hordes of the beholder, they are elite warriors and highly mobile.