I guess for a defensive rotom that can bite back at ferrothorn or scizor mainly going off of this sentence for other options on the smogon data base:
At the cost of some bulk, Rotom-W can run a more offensive set with 220 HP / 128 SpA / 160 Spe EVs and Hidden Power Fire or Signal Beam that allows it to provide some offensive pressure and lure in Ferrothorn or Celebi, respectively.
At the cost of some bulk, Rotom-W can run a more offensive set with 220 HP / 128 SpA / 160 Spe EVs and Hidden Power Fire or Signal Beam that allows it to provide some offensive pressure and lure in Ferrothorn or Celebi, respectively.