Sweeping Blades (Augmancy: Sword Burst)

Augmancy. To cast this spell, you must know how to cast sword burst. You do not need to learn or prepare this spells to cast it if you know sword burst and have an appropriate spell slot available.

Until this spell ends, when you cast sword burst you create an additional 30-foot long line originating from you that is 5 feet wide increasing the area of effect, as your spectral blades sweep around you and carry forward with ferocious momentum. On a successful save, a creature takes half damage.

At Higher Levels. When you cast this spell with a slot level of 7th level or higher, the duration of the spell becomes 1 minute with no concentration required.