Psychium-Z Greninja is the best partner for this M-Scizor imo, it can hit hard M-Scizor counter/checks. Hydro hit Fire types, which are a pain for Scizor, HP Fire to break annoying Steel Types like Skarmory, Celesteela or Ferrothorn. Also provides speed control and Toxic Spikes and his coverage can be really annoying for many match ups.