After reading through this description a few times, I am still as confused as ever to what the benefits of this set are.
Reliable setup in BH requires a lot of careful planning; especially in today's metagame, "run ____ as a partner" simply doesn't suffice because matches often depend on one seized instance of momentum, especially when your possibilities are basically limitless and you CAN run monster sets that can actually consistently dominate against a variety of different playstyles and a variety of different setup checks WITHOUT relying on switching to other Pokemon the moment any setup check switches in.
First things first, looking at this set, I was immediately reminded of Haylighter's Shell Smash Zekrom set (he posted it somewhere, I can't find it right now, but when I do I will edit it in later). Both Pokemon rely on -ate, Shell Smash, and Judgment coverage to sweep through teams, but I would argue that Zekrom does this much more efficiently and in a much less risky way. This is because Zekrom's set in and of itself is inherently imposter proof; you don't have to worry about a Chansey coming in and countersweeping you because without Draco Plate, the opposing Chansey won't be able to hurt your Zekrom with x4 resisted attacks, nor will it be able to hurt Ground-types at all. With your set, a Chansey can switch in after a kill and fight the Speed tie - either simply just OHKO with Boomburst, or Spore and continue to set up. Of course, thanks to your power, you win 35% of the time (50% to win the Speed tie x ~70% to OHKO), but why run a set that will cause you to flat out lose to every Chansey you meet two-thirds of the time? (Note: this is why
Rumors Quiver Dance is a bad change for this set because in that case you would definitely lose to Chansey while only slightly mitigating the weakness against -ate; remember that -ate priority is physical and will KO you through your SpDef boost, and you still lose to Triage MMX, one of the two most common Triage users in the tier.)
I know that conclusion leaves a lot left unconsidered - but the point of me bringing it up is to highlight some of the errors in the philosophy of the set and what you consider makes a setup sweeper strong in this metagame. I'd argue that your Kyurem-W, on paper, would lose to almost any valid player simply because it offers no resistance against any of the known common responses to setup sweepers that every player worth mentioning would have to carry. For example:
- You can't hit Shedinja.
- You can't hit through Unaware.
- You can't beat passive Prankster (neutral Prankster intended to nullify even priority-resist Pokemon but that otherwise does little in terms of damage).
- You can't even beat active Prankster.
- You can't beat -ate priority.
- You can't beat Triage priority.
- You can't beat Spectral Thief.
- And, as said earlier, you can't beat Imposter most of the time.
In comparison to other prominent sweepers in the metagame, like Focus Sash + Dazzling Pokemon that can usually beat up to 3/4 of that list by themselves, or other Judgment Shell Smashers like Zekrom or Mega Gengar, whom at least beat Imposter, this Kyurem-W set is just average. There isn't anything special about it.
Of course, this is not to say that your Kyurem-W set is bad. I think you could possibly counterargue in the fact that this Kyurem-W has added value from its power and its ease of setup thanks to Spore, two qualities of which are arguably just as valuable as difficulty to wall. But to this I would respond that power is definitely less important because there are plenty of other sweepers in the tier that can reach similar levels of power but can also incorporate defenses against opposing defenses. The Spore argument is a good one, but I would also reply that there are also plenty of other sweepers that can also use Spore and incorporate some sort of defense against anti-setup, and would outclass Kyurem-W in this regard as well.
At the least, I think this set could definitely be improved in many ways. Zap Plate + Judgment seems pretty useless in this regard because it serves neither purpose JudgPlate serves for setup - coverage and the ability to check imposter. Your Boomburst is less than 10 BP less powerful than Judgment on every common Pokemon in the meta except Primal Kyogre and Mega Gyarados (AVest survives Judgment anyway so you are better off using Spore), as there are very few x4 resists to Ice in the meta and far fewer relevant Water-types. Again, every tweakable characteristic of every set is another opportunity to add a layer of utility onto your Pokemon, so taking up both your item and a coverage attack for almost no added value is a waste. Thus, I suggest you run
Grass Knot instead of Judgment - it hits 120 BP for both POgre and Mega Gyara, barely less than Judgment's 122.4, so damage taken will be the same. You could also run non-coverage moves to help beat setup checks; for example, Extreme Speed with mixed EVs lets you beat priority. Now, you have a free item slot - which you can dedicate to countering setup counters. There are many options now for what you want depending on your playstyle, but the two best options in my opinion are
Focus Sash and
Lum Berry. Focus Sash is a good item to carry with Spore because, if kept intact, it drastically increases your chances of winning against Chansey - the only way for Chansey to win is Spore and both lucky sleep turns and outspeeding you on the final hit. Focus Sash also gives you an extra layer of protection against one-hit priority, primarily from Triage but also from -ate users that don't use Fake Out. Lum Berry I think has less utility but I guess it can be used to cure yourself against Magic Bouncers, Prankster status, or Chanseys that try to Spore you instead of attacking.
I like
Rumors ' spread suggestion though, particularly because the 112 HP EVs guarantees your survival against +0 Imposter Chansey's Boomburst.
EDIT: I found Haylighter's set!
This thing is amazing, though personally I run 56 Spe instead of 20 to beat 252+ Choice Scarf base 90s, notable ones which include Primal Kyogre and Primal Groudon.
