Blade Storm Blitz

You brandish the weapon used in the spell’s casting and then flash forward in a a 30-foot-long, 10-foot-wide Line of lightning. Make a melee attack with the brandished weapon against up to 5 targets within the Line. On a hit, the target suffers the weapon attack’s normal effects and then takes an extra 6d10 Lightning damage.

You then teleport to the end of the Line.