Coldsnap

A humming bolt of pale blue energy dashes from your finger to a point of your choosing, imploding the space around it into intense entropy with a shimmering crash. Creatures caught in the 20-foot sphere around that point must make a Dexterity saving throw and take 8d6 cold damage, or half on a successful save.

The ice crated spreads around corners, leaving a slick film of frost in its wake.

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.