Coldfire Gaze

Your eyes become suffused with pure cold, projecting frigid energy within a 30 ft. Cone for the duration.

When a creature starts its turn in the cone or enters it for the first time on its turn, it must make a Constitution saving throw. On a failure, a creature takes 7d10 Cold damage and has the Restrained condition until the end of its next turn. On a success, a creature takes half as much damage only.

Once on each of your subsequent turns, you can change the direction the cone is facing. The cone otherwise moves with you.

Using a Higher-Level Spell Slot. The damage increases by 4d10 when you use a Level 9 spell slot.