>>45031101>There are much stupider dual typings.Poison/Electric is the optimal typing for stallbreaking since it shits all over defensive Water/Grass types which are common on defensive mons due to their SR neutrality/resistance. An immunity to Toxic means passive Pokemon can't beat it, and resistances to Fighting/Fairy/Flying/Electric limit what you can do offensively if you're not packing EQ.
Even something like Ferrothorn, who can take Toxtricity's STABs, can't really do anything in return except setup hazards.
A hypothetical Rotom form like
>>45030781 would be defensive cancer since it switches in on every single defensive mon, defogs, toxic, pain splits on chansey/blissey/hippo or burns/paralyzes offensive answers. It can muscle through resists by boosting with NP
HO, balance, and stall alike all raped by such a mon