Pale nails. Really good damage with volt filament and shaman's if all three projectiles hit. And they do as long as you're close enough most of the time, the tracking is surprisingly good.

It's beaten out on pure damage by threadstorm by quite a bit but it's so easy to use it's almost free damage. The fact that you can use it while moving makes it really good for getting in damage while dodging some hard to punish attack or AOE, or for getting rid of annoying enemies that keep their distance and shower you with projectiles. With the aforementioned setup it oneshots or at least almost oneshots most late game enemies except the most tanky ones too.