The Nerathi Scrying Portals
Upon activating the portal, allows the user to scry upon whatever they wish.
Originally created by Elven wizards during the height of the Golden Empire, all four of the devices were given to the warlord Nerath, in return for safe passage of certain Elven Magi. Eventually they were lost during the fall of Nerath. Not knowing how to activate them but knowing their full power, someone disguised them as wagon wheels and other objects. Ever since, the wheels have been lost to history.