Celanthrîma are sometimes known as Orbs of Clairvoyance, or rarely as The Orbs of Sight. The name of these orbs come from celon, "falcon," + thrûm, "perception, sight," sometimes thus called a falconspy. A Celanthrîm allows the user to perceive (that is, both see and hear) events at a great distance. The distance at which one can gaze is theoretically infinite, however, the farther away one looks, the greater the force of will and concentration that is required. Operating the Orb is draining, and requires a source of constant spiritual energy.
To operate, the user must first position themselves around the Orb in the direction they wish to gaze. Then they must focus on the magnitude of distance they wish to look. Users often prefer to have the Celanthrîm located in a high tower to more easily see into rooms, and over obstacles. The device does not work by simply picturing a location, nor can it look forwards or backwards in time. It also will not automatically follow a moving target, so its focus of gaze must be manipulated manually. Usage of the orb is very complicated and is said to take years of practice to master.
Though the first thrûmic orbs to be created are said to have been Celanthrîma, the artisanry needed to craft new falconspies has been lost for many centuries. The closest that a modern artificer can manage are Ulthrûma or Oëthrûma, lesser orbs of listening and sight.
Legend states that Celanthrîma, when used correctly, may permit the viewer to see into the past or future, but that the art of it's usage as it is now known is broken, or incomplete.