Return of Reckoning

Is there a library where I can see available helm appearances for runepriests ? The regular skullcap design is kind of boring...

No, there isn't a library for Runepriest helmets.

Ask in the Bitterstone Discord you are in.
Noergl, or Wahr might provide some infos.
There are some hoods as well as some more intersting skullcaps.