Freezing Fog
From HGWiki
Caster Level: Sorcerer/Wizard 5
Innate Level: 5
School: Conjuration
Descriptor(s): Cold (not loot breaking)
Component(s): Verbal, Somatic
Range:
Save: Fortitude
Spell Resistance: Yes
Area of Effect/Target:
Duration: 1 Round / 2 Levels
Description: Freezing Fog creates a thick, clinging, greenish cloud. Creatures entering the cloud take (CL * 3/4)d6 Cold damage per round; damage is doubled on the first round a target is in the cloud. Creatures inside the cloud must make a Fortitude save or have their movement reduced by 50%. Every round a creature spends in the cloud, it suffers 1d6 Cold damage per 8 caster levels.
Notes
If cast by a Herald of Storms enemies must make a Reflex save or suffer 2d6 Dex loss in addition to the normal effects and half the damage inflicted is Magical instead of Cold.