Thank God I always run Scizor. And Superpower Tyranitar. But this thing would be a great addition against said users as well.Tyranitar will earthquake off the bat all the time now, cause if that comes in on crunch and uses rock polish, you'd better hope you have scizor, breloom and/or azumarill on your team. Even then, you have to hope it's used close combat or has already suffered life orb recoil.
This thing will do so much damage after switching in on a Dark type move and Swords Dancing up.