lmao! Did you forgot that Urshifu learns “Poison Jab”? Oh, I think you did. With predictions it can actually 6-0 a team. Poison Jab 2HKO Clef and Togekiss (Calc it). Urshifu makes players runvery bulky stuff which it makes the tier “Boring” because of “Bulky Standard teams and Stall” to counter a single mon. That’s my whole point. Wicked Blow isn’t the only attack that he learns. He has coverage to “blow back” Most mons. Thanks for replying and remember: “it will be banned very soon”. Peace!
Thing is, that's really the case with any wallbreaker. If you "predict correctly", then you can 6-0 with really any mon. It's not really something that's reserved exclusively to Urshifu. By that logic, we should ban Lycanroc-Dusk for its amazing coverage since it can 6-0 teams if you predict correctly with it, or ban Excadrill since it can 6-0 teams if you get Iron Head predicts right. It's absurd to try and ban breakers just because they can win if you predict well with them, especially if their main forms of power come through a Choice item. You also imply that Clefable/Comfey will always be hard switched in, as if there is no possibility that the opponent will try to predict you catching their Wicked Blow/CC resist.
theotherguytm described it much better than I could, so I would redirect your attention to that post if you want a better breakdown of why prediction is a very inconsistent way to gauge the brokenness of a wallbreaker.
Anyway, speaking of Urshifu, I would like to give my thoughts on it now that we've had some time with its wallbreaking potential.
No, not you Rapid Strike. Perish.
I initially dismissed Urshifu as a good wallbreaker but not anything that would terrorize the tier, and after using it, I stand corrected. Single Strike singlehandedly is capable of deconstructing stall cores with its incredible STABs and access to Iron Head/Poison Jab, while also being able to pivot with U-Turn and forego its speed tier with a nasty STAB priority option in Sucker Punch. It's indisputable that Single Strike Urshifu has taken the tier by storm, and many people are discussing as to whether or not its wallbreaking potential is too much for the tier. After playing some with it, I'd like to dissect it point by point.
1: Wicked Blow
Wicked Blow is arguably the most alarming part of Single Strike's kit. Being a base 80 BP dark move that is guaranteed to crit the target is just as incredible on paper as it is in execution, as it is able to completely tear apart Screens Offense and muscle past common defensive walls that don't resist it. Such things as Tangrowth, Chansey, Toxapex, despite being great walls in the tier, still have an extremely hard time switching into it, especially if the Urshifu user is running a Choice Band. On top of this, it being a Dark move is simply incredible as well, as it is able to obliterate common defensive pivot Slowbro without any trouble whatsoever, on top of lacking any good resists outside of Mandibuzz and Galarian Weezing. It also lacks any immunities, making it always deal some semblance of damage to its targets.
2: Set options
At a glance, despite its middling 550 BST for a legendary, its stat distribution is what's of note. 130 base attack was always incredible, and that has never changed over the generations despite power creep, and on top of this, it gets a horrifying STAB bonus to its Close Combat and Wicked Blow, making them absolute nukes if it gets in safely. It also has a base 97 speed tier; though, despite being middling, it still gets a very relevant jump on some important Pokemon like Kyurem and Hydreigon.
Even though it might lose out to base 100s, it has just enough speed to get away with putting an emphasis on augmenting its insane power. The most common set I've seen on the ladder (and that I've used) is a Choice Band variant, which is able to blow all non-resists away, and even still respectably dent said resists. I don't need to show you the calcs to show you that even physically defensive Pokemon struggle to contain its blows. Even with its nonoptimal speed tier, it still has STAB Sucker Punch to blow away faster, frailer targets.
I've also seen Bulk Up Urshifu be run, which is amazing against Stall/Semi-stall cores in particular which struggle to naturally outspeed/punish Urshifu. It can also stack Bulk Up boosts, enabling it to win at preview if the user doesn't have a healthy, physically defensive Fairy type on their team. This set isn't as good against more offensive teams, but it for sure has its place.
Choice Scarf, among these, is the most uncommon set I've seen. Though, that's not to downplay its utility. Urshifu's access to U-Turn allows for it to play the momentum game to a greater effectiveness with the speed boost, and Wicked Blow/CC are great cleaning options for reasons I don't need to explain. Though, it is considerably weaker, and most prominently, loses out on some important damage ranges (such as against Tangrowth).
3: Unseen Fist
This is something that is seldom talked about with Urshifu, though I think still has some relevancy regardless, given the newfound influx of Wishpassing to the tier in the past months. Urshifu's access to Poison Jab allows for it to cleave right through Clefable, and it can't play the Wish stalling game, as it is able to penetrate right through its Protect, forcing Clefable to take damage no matter what it does. The same goes with Wishpassing Vaporeon and Chansey, which need to hard switch or stomach a blow. Outside of this and some fringe Protect Kommo-O/Baneful Bunker Toxapex variants, Unseen Fist isn't the greatest ability in the tier. But, it's extremely noteworthy anyway for its ability to completely dismantle common Stall and Wishport Balance cores alike.
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So, what's my conclusion?
I genuinely do not know if it is broken or not, but I'm leaning more toward it being a top tier breaker as opposed to broken.
On paper and in execution, this thing is fearsome beyond all definition. Wicked Blow, Unseen Fist, and the ability to exploit its options gives it immense wallbreaking capabilities that the tier definitely needs to try and adapt to; however, I would like to be a play the devil's advocate and say that, much unlike Dracovish, this thing is definitely more than an unga bunga machine. Its defensive typing, defensive stats, and ultimately mediocre speed tier are beyond desirable, meaning that getting it in requires more tactful play, and even when you get it in, you need to scale which of Urshifu's options would be the best in the moment. Do you want to predict the Fairy switch-in? Do you want to get off a meaty CC, but risk revenge killing? Do you want to call a move and Sucker Punch? Do you want momentum and get a U-Turn off? Or, do you want to get off a Wicked Blow as a strong midground play? All of these options have their merits and have opportunity costs due to Urshifu's innate cons as a Pokemon, and as such, it's never really
dominated any game I've played unless the opponent didn't have a Fairy or Dark resist. This kind of goes back to what was mentioned earlier about prediction being an inherently inconsistent way of gauging something being broken, and it requiring actual skill and finesse.
I think the best thing I can compare this to is Gen 7 Landorus Therian. It is extremely good--even top tier--but it is not necessarily impossible to prepare for, since there are checks and relatively consistent answers in the tier to account for it due to its glaring downsides, such as Physically Defensive Mandibuzz, Rocky Helmet Tangrowth, Galarian Weezing, Comfey, and the plethora of splashable revenge killers that capitalize on it being locked into a move, lacking a sufficient speed tier, or needing to set up. If anything, I feel it's healthy for its ability to force Stall and defensive cores to think/play more thoughtfully. I acknowledge that we're super early into Isle of Armor and it might turn out being really broken, but I personally haven't had many issues handling it.