Target a point within range, a sphere with a 30-foot radius of absolute cold appears. Any creature caught in this radius must make a constitution saving throw. On a failure the creature takes 12d6 cold damage and its considered paralyzed for the duration if it takes any of the damage. The creature may repeat the saving throw at the start of its turn ending the effect on a success. On a success the creature is not considered paralyzed and takes half the damage. Any creature that enters the radius or starts its turn there suffers 6d6 cold damage. This area is considered difficult terrain unless that creature is resistant to or immune to cold damage