Ice Storm

This spell causes a powerful storm of sleet and hail to fall in a 20' radius around the target spot for a full round. This effect causes 5d6 points of damage to every creature within the area, with a save vs. Spells allowed to reduce damage by half. The ice storm fills a vertical volume of 40', so creatures higher than that distance above the target spot are unaffected. Any creature naturally resistant to cold takes half damage (or one-quarter damage if it makes its save). Visibility within the storm is very poor, such that most creatures will attack with a penalty of -2 on the attack roll. Walking movement is reduced to half speed, and running is not possible within the storm; anyone who tries will fall down and be forced to remain on the ground until the spell ends. Flying is likewise impossible, and any flying creature within the area will be driven to the ground. A penalty of -20% is applied to any Listen rolls made by those in the storm's area. When the spell ends, the hail and ice deposited by the storm disappears as if it had never existed.