Combining pseudo-infinite scaling damage with [Ash] brings an interesting aspect to combat. Equipping [Ash] with Breach Surge allows him to easily clean up kills that he normally would have missed with Blade Storm.
The ability sequence is simple. Cast Smokescreen and Teleport into a group of enemies. Cast Breach Surge and finish off with a quick spin of Blade Storm and it's all set up. From there the surged enemies will send sparks to other enemies in and outside of the group continuously as they take damage from other sparks as well as the slash procs from Blade Storm.