This is another example of what I was saying in a different post. They make such a big deal out of the adamantine armor and weapons that you expect them to be something more special. Then you get it and you wonder if it was worth everything you had to do to get it.
I went with the mace because I wanted to give Shadowheart something a bit more special. She was using the Watcher spear previously. After getting the mace and almost dying to do so, I thought, "It's not even + 1? Well, I guess it's okay."
