Cone of Frost

You unleash a blast of cold air. Each creature in a 15-foot Cone originating from you makes a Constitution saving throw, taking 2d8 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 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.