Quick Cast: Yes
Requirements: Several minutes of chanting and a ritual, for a witch or warlock a mere phrase or gesture.
Effects: This spell allows the caster to harden the air into a wall of force. The wall is a 20 ft by 20 ft section and can be molded into sphere or will re-size to fit into an existing door frame. The caster can choose the form of the wall at the time of casting, but cannot change it afterwards. The wall is invisible unless touched, then it appears as though the the air were rippling. The wall can be dispelled by the caster at any moment and lasts for one minute per success level.Buffy TVS Spells