Deep Freeze

The caster removes all heat from an area 5ft wide by 30 feet tall that remains for three rounds.  Any creature caught in this area suffers 3d10 frost damage for each turn it remains.  Any creature attempting to flee from this area or through this area has their speed halved once they make contact with the area.  If a creature remains in the area of deep freeze for three turns, they will freeze solid and be considered incapacitated for one round.  All flying creatures frozen in this manner will plummet to the ground and take the appropriate falling damage.