>>41473206Battle Spot Doubles & VGC allow a full team of 6 but you choose four of those Pokemon to bring into battle during the team preview portion. Smogon Doubles you just use your entire team. Doubles is more offensive but not as offensive as some might make it out to be, at least not Smogon Doubles since there is no item clause so faggots can run Leftovers on more than one Pokemon.
As far as Grimmsnarl and Covriknight goes, Grimmsnarl on paper seems like a solid but basic AV user. Just slap on Spirit Break, Throat Chop, Fake Out, and some other shit maybe Sucker Punch. With Corviknight I feel like it's lackluster Attack is going to leave it hanging but it at least has the bulk to set up Tailwind. It could make for a decent Support Mon with Tailwind & Taunt but you're probably better off with another Tailwind mon desu.
>>41499876sounds like cancer, I never felt I had to build around z-moves or megas that drastically. Sure back when Mega Kang was a thing you'd have to bring something like Mienshao to stomp it but it wasn't that bad. Thanks.
>>41499972I think the main issue is that if you don't have a dyanamax counter, you're going to be fucked against any team with a Dyanamax Pokemon. So you're essentially being forced to use one otherwise you're always going to lose against the teams that have Dyanamax.