[08:30] <TIBot> Volt Switch 98.832% | Hydro Pump 98.318% | Will-O-Wisp 93.131% | Pain Split 80.236% | Rest 8.779% | Trick 6.947% | Other 13.756%
rotom-w does not run thunderbolt.
shield dust also does nothing against gengar.
Since I can't in the thread I'll do it here. I want to address your Rotom-W reasoning. The ONLY rotom-w spread that is run/common is the defensive set. there is no viability in running any trick or offensive set due to the presence of pokemon like Talonflame and Sand Rush excadrill as well as Azumarill to name a few.