In terms of resist, Miraidon, Toxtricity, Magnezone, Belibolt, and certain Rotom forms are the big ones that stand out as they have two resists to its potential attacks. Of those, Miraidon is looking the best as looking at its movepool it doesn't have any Ice, Dragon, or Fairy type moves it could run so basically the only thing it'd fear is Ghost moves, it can use Metal Sound to lower SpDef, and it provides some nice support in setting Electric Terrain. Magnezone and Belibolt also could do well here in a similar way, though Magnezone has to worry about the potential Fighting move. Toxtricity could be good as it can also support with Acid Spray or Screech, you just have to watch its health as its bulk is not the best, and Rotom I'm not as sure on, but could have potential since it does get Nasty Plot.Miraidon would probably be good here. Also here is a list of available Electric type mons:
Pawmi line(Electric - - ->Electric/Fighting)
Also Steel and/or Dragon types also might be good here.
One funny thing you could do is run two Luxrays to automatically cut its attack down by -2 at the start of the match, but if it runs Hurricane and/or other special moves that's probably not going to do much.