Cania's Cruelty

Black infernal script encircles your enemies allowing the frigid temperatures of the eighth level of the nine hells "Cania" to erupt upward. Each creature in a 30-foot cylinder must make a dexterity saving throw. A creature takes 5d8 cold damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, A creature who fails the saving throw is frozen and must make a strength check of 15 to free itself if it fails the creature takes 1d8 cold damage at the end its turn for 2 turns.