OOC:
Not sure warrior poet would mean knows magic, so i'm going to move things forward.
It seems there isn't really anything you can do with the crystal ball. The ball isn't fixed on the pedestal, so you can take it if you want, unless you fear doing so.
You make your way back, nothing else back here to interact with, and go back to the intersection. Going down the last hallway before returning to the main room, you find yourself in a room where it looks like undead are embalmed in order to make them rot slower. The next room over appears to be an old tomb that looks mostly empty. It's probably where the wight got most of the undead it used to them kill and make more undead.
Eventually, you all enter the tomb in the back and you all notice a wall that seems rotated slightly. A secret door! You find scrolls upon scrolls. Perhaps one of you might find something if you search in the room for a while? (DC 15 Intelligence or Wisdom check with a background that's good for reading a lot of text and noticing something significant)
OOC:
Feel free to roleplay anything you might have done back in the earlier rooms.