Aerial Servants

Aerial Servants are non-corporeal entities bound to the will of Stratos. Appearing in Ultima VIII, they feature frequently in the arts of theurgy, and may be summoned by the followers of the Mystic Voice to perform a variety of tasks.

Description
Aerial servants are believed to be the spirits of those who died before the completion of an important task, and they appear when manifested as small eddies of wind. Easily bound to the will of theurgists through the use of the Aerial Servant spell, these beings have just enough substance to transport or manipulate the physical world, although they may not perform any act of violence unless commanded to do so by Stratos herself.