This build is a lot of fun, the damage is insane and you're pretty sturdy between Mirrored Image + Drugs (Whiteleaf heals me for 4.1 health per 3 seconds alone).
I played it as dual Sabers instead because I think Tarn's or Grave Calling in your offhand are better than Rannig's. I was overloaded with Accuracy, so the Rapier bonus was meh + the modal isn't really needed once you get Enduring Dance (both actives, no stacking). I can probably drop my accuracy gloves and pet, too.
This screenshot below was against the Porokoa at the end of SSS on upscaled PotD, it's a Heartbeat Dru