So lets spice it up, change the proc to be either (KB2KD) or (KB+1 plus some minor damage), in a 50:50 ratio when it procs.
Regarding the original idea, just adding some damage to the proc seems to be overkill given the utility it already has.
Edit: I just realized it's functionally "always on", therefore the "when it procs" is stupid and its current effect good enough for me.