@Lanstar: Thanks! I appreciate the feedback! M Mewtwo-EX X might be strong as well, but I don't think it's as good as the Y version because of only hitting for 200. Those big Basics with FFB or the Megas are gonna survive those hits, giving the opponent another turn to adjust to the situation. Damage Change is going to be a niche in Mewtwo decks for sure if the opponent can't find a way to OHKO em. I don't think the Volcarona is splashable enough for an attack that requires
three Energy to be meta-competitive, however.
@Spectre_Makoto: I regret leaving both Mewtwo out, but thankfully PMJ wrote about the Y version. I believe the Y version is more formidable than the X, but don't think it stood out to me to be worth mentioning. I dunno if
@BraviaryBoi is right when he says that Mewtwo beats Greninja. Damage Change is the key player in this matchup more than anything because you're going to need to stack a
ton of Energy to KO with Psychic Infinity, especially when Greninja bounces its one Energy it needs to attach back to the hand. To try and take down a 170-HP BREAK in one hit isn't easy. They also have access to Rough Seas and don't play any EXs for you to try and even up the Prize trade on.
@WastedSkyPirate: My man! True - we don't have the complete setlist yet, but from what we can deduce from the Japanese scans and mocklists that have been written up so far, (the big announcement being Karen not included within the set), we have the best idea possible. Treynor Wolfe (another writer here) has what should be the list somewhere. Yeah, Groudon's gonna be really good. Dunno if playing M Scep is gonna help at all but I'm thinking about it hard.
@MarshalBry: I did
not think about Max Potion. However, I don't know how worth it it would be. You would need to hit two Diamond Gifts to replenish Groudon's Energy cost, and in that time Carbink could get KO'd. This isn't stopping you from bringing up another one, however, and softening your opponent's Active so one Gaia Volcano could do the trick. Interesting idea for sure.
@Otaku: Now you're speaking my language haha. Sorry for the misunderstanding! On Korrina and Sash - I get that they weren't four-ofs in Fighting, but they were still very significant in making the deck as consistent as possible. Variants with Medicham could attack four times before they were Knocked Out (with the Ancient Trait) which even makes the card viable for Worlds. Korrina ensures you have attackers and a gameplan for the next turn. I don't think I need to run back what the cards do. I would say that with heavier hitting Pokémon in the meta that would usually have good matchups against Fighting would call for the wish of having Sash around. Sure, Ariados does render it useless, no lie, but you're gonna use Ariados pretty much only in M Scep or in another Grass-type attacker. And frankly, there really isn't another right now. Sash would be for lower-HP Fighting-types or heck even anything afraid of Ray.
@PineDog: Yup. The thing is, M Ray makes those counters more viable than they would be without it in the format. What other reason would there be to play something like Zebstrika?