A bright blue streak flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an explosion of blue ice flame. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 cold damage on a failed save, or half as much damage on a successful one. The burns act as if the receiver has suffered serious frostbite. Restrains those that fail their Dex save for 1 minute or until they make a Strength check with a DC 10
The fire spreads around corners. It ignites flammable objects in the area that aren't being worn or carried and freezes everything seen after.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.
* - (a tiny ball of snow, ice, or blue glass)