Chill Bones

As you hold your hands near the ground, a chilling aura spreads forth from your outstretched fingertips. Each creature in a 15-foot cone must make a Constitution saving throw. A creature takes 3d6 cold damage and its speed is halved on a failed save, or half as much damage and no speed reduction 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 1d6 for each slot level above 1st.