Cold Breath

You expel a gout of freezing air from your mouth in a 30-foot line that is 5 feet wide. Each creature in the line must make a Dexterity (DEX) saving throw, taking 1d10 cold damage on a failed save and it has disadvantage on the next weapon attack roll it makes before the end of its next turn, or half as much damage on a successful one.

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