You see stolen tome of portals.
Notes
After being destroyed, it will become a Magic Forcefield. This is part of The Secret Library Quest.
Abilities
Unknown.
Damage Taken From Elements
Physical 
Death 
Holy 
Ice 
Fire
Energy
Earth
Drown
Location
Gorzindel's room in the The Secret Library.
Behaviour
It doesn't move. Stolen tome of portals never retreats.