Auril's Frost Breath

You gain the ability to breathe an icy breath weapon as an action. When you use this breath weapon, all creatures in a 25 foot cone must succeed on a Constitution saving throw or take 6d6 cold damage. Any creature that fails the saving throw by 5 or more is petrified, frozen in a block of ice. The petrified creature can use their action each turn to repeat the saving throw, escaping the ice on a success. The effect also ends if a petrified creature is within 5 feet of a flame for a full round or takes fire damage. This spell deals half damage to those who succeed.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 4th.