Quote Originally Posted by Southern Cross View Post
Actually this looks more evil than celestial...
It's a nonlethal method of dealing with an enemy that causes no lasting damage. It is a reflection of the Aura of Menace ability possessed by Archons, the high intimidate skill and cause fear spells listed in the various Angel stats.

The idea behind the effect one of awe, in the sense of wonder and dread, and a power of revelation, illuminating evil and showing it for what it is. It is the terror that a mighty avenging angel might invoke when swooping down on an enemy.

Fear is something that has been associated with mythical angels as much as it has been associated with fiends. I'd say that it is often a different kind of fear, and tends to be used in specific ways, but for the purposes of D&D, it is still fear.