Crimson Flash

You cloak your blade in red lightning then move at least 5 ft and up to 10 ft to strike an enemy (this movement does not provoke opportunity attacks) at the end of the attack move 5ft. to the other side of the opponent from which you started.

This attack deals the normal weapon damage plus 1d6 lightning damage 

At Higher Levels increase the damage dealt to 2d6 at level 5, 3d6 at level 10, 4d6 at level 15, and 5d6 at level 20. In addition increase the maximum movement distance by 5 ft every 5 Levels. 15 at 5, 20 at 10, 25 at 15, and 30 at 20.