Aspect of the Crucible: Breath

You grow an animalistic throat pouch from your neck, allowing you to breath fire in a 30-foot cone. Each creature in the cone takes must make a Dexterity saving throw, taking 4d6 fire damage on failed save, or half as much on a successful one.
On subsequent turns until the spell ends, you can use your action to continue releasing the fire. When you continue releasing the fire, you can choose to change the direction of the cone. If you take another action, the spell ends.
At Higher Levels.
When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.