it does have the VFX already, and the catalyst is called [b]electric[/b] styx, so it would be fine to just make it occasionally jolt on rapid hits/kills or while in revolution mode.
I think the most basic change it needs though is for the seeker mode to be useful on its own, thus giving Symmetry a kind if play style that Duality was always meant to have. The intrinsic is called "Revolution" after all, which works as a double entendre in this case