4-level Transmutation
Long, sharp protruding crystals or metal emerge from out of your elbows and palms as you begin to quickly spin around. You hurl yourself into a spinning dance, moving in a straight line to an unoccupied space you can see within range. Each creature within 5 feet of the line you travel must make a Dexterity saving throw, taking 4d10 slashing damage on a failed save, or half as much damage on a successful one