Gaseous Form
This spell enables the caster to assume a gaseous form, as the Potion of the same name. In this state, the caster's body and anything carried or worn becomes a cloud of elemental vapor and essentially invisible. While in this form, the caster can escape from almost any confinement. Any small crack or hole that allows air to penetrate allows passage in gaseous form.
No form of attack or spell casting is possible while in a gaseous state, but the priest can fly near the ground at a movement rate equal to his Intelligence (Maneuverability Class B). A Gust of Wind spell or even normal strong air currents blow the caster at air speed in the direction of the gust.
In this form, the caster is all but immune to attack. Magical fire or lightning inflicts normal damage, and a whirlwind inflicts double damage. The caster can return to his original form at will, but this ends the spell immediately. Otherwise, normal form is regained upon the expiration of the spell duration.The material component is a pinch of vampire dust or a vial of air from the Elemental Plane of Air.