Black Rime

A blast of foul, abnormally frigid mist and miniature ice shards is shot close range at great force toward creatures within a 10 ft. cone. All creatures within the cone must make a Dexterity saving throw. Upon success, a creature takes no damage and suffers no ill effects. Upon failure, a creature takes 1d10 cold damage and has disadvantage on CON saves until the end of your next turn. This spell ignores resistance to cold damage, and treats immunity to cold damage as resistance to cold damage instead. 

The spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).