Winter's Grasp

Ice encrusts the ground, radiating supernatural cold and making it hard for creatures to maintain their balance. This icy ground is treated as difficult terrain. When the spell is cast and every round after that, creatures in the area must make a successful Reflex save or fall prone. Creatures in the area take 1d6 points of cold damage each round and suffer a –2 penalty on saving throws against spells with the cold descriptor until they leave the area.