There's a problem with Ubers, (Or at least to me.) and that's how certain pokemom's mechanics invalidate so many others. My most prominent bone to pick is with Marshadow, but be warned. I don't like Marshadow, and I probably never will. So I may be biased. But Marshadow is always a huge factor in most teams. He's extremely powerful, but not too much so that he's going to be banned. Marshadow has spectral thief, which is just an absurd move. It does respectable damage, but it's effect is stupid. It steals boosts, but that on its own isn't that bad. But it doesn't swap boosts, it takes them. There are no repercussions to spamming this move, because not only does it only take boosts, it only takes positive ones. So a swords dance Lucario who's used Close Combat twice is always going to lose without a crit, and Marshadow is now at plus 2 with no debuffs. This could have worked well, but he also has excellent speed, and enough bulk so that he can survive most priority moves even at plus 2 (After using Close combat, I switched in my Scarfed Kyreum W and used Ice Beam, which didn't kill from my max investment with jolly. It left him at 1 hp so he killed me with another close combat.). And he has technician and stab shadow sneak, with the best offensive typing in game that is also unresisted. This all of these in isolation is fine, but combined it's just ludicrous. And, he also doesn't really have any true counters. he has some very good checks, but very few, if any, will get away unscathed, or don't have a chance that Marshadow is carrying an 0HKO coverage move. If you go to his checks and counters, the only one who can really come in and murder him is Mega Salamance. It makes it frustrating to fight him. Now, this may be not as big of a problem as I perceive it, maybe I'm just a noob who need to "Get good". There are more, but what makes it more frustrating is that I know he will not get banned or nerfed. He will almost certainly stay the same, and I just have to deal with it. Primal Groudon also has this, but to a much lesser degree, as he has his weak special defense to work around. Marshadow is usually fast enough to negate this. Dusk Mane has a different form of this. He can be so many different sets, and no pokemon can really counter all sets, (Well, maybe Yeveltal can, not quite sure about whether there are any viable sets that beat the Flying Bacon.) He can run defensively, he can run a balance between bulk and power, he can run Solgaleo's Z move, and he can run as Ultra, which can run swords dance or 4 attacks, or even run a special set. (But this is probably done better by Dawn Wings.) But I've never found him to be that much of a threat, and I've never been swept b or dominated by him without my mistake.