The orb of the Dreaming Dark found in the forbidden vaults of tower six. The typical crystal ball, a very rare item, is about 6 inches in diameter. While touching it, you can cast the scrying spell (save DC 17) with it.

One of the Emissaries of the Dreaming Dark.

Originally one of the two orbs given to Cul'sir and the giants of Xen'drek including its sister Kryss. Both orbs were recovered by Leto Skalle but no mortal can hold just one orb so he buried the other in the vaults beneath Morgrave University. Lhaak is now held by Coratash.

In the spaces between sleeping and waking, nightmares wait with grasping claws. The quori spirits that rule Dal Quor spent a thousand years seizing control of the continent of Sarlona. Now they have turned their many eyes toward Khorvaire. The ultimate goal of the Dreaming Dark is to control all the nations of the world. The plane of Dal Quor goes through cycles of light and darkness, and the current age is coming to an end. The nightmare spirits that rule the plane believe that by seizing control of mortal civilization — by forcing all the people of Eberron to dream the dreams they devise — they can maintain this current age of darkness indefinitely. So the fiends of the Dreaming Dark aren’t merely hungry for power; they are fighting for survival. One of seven orbs. Leto Skalle has another called Kryss.