Besides, not to mini-mod or anything, but can we focus on one thing at a time? Talking about -ates, Shedinja, Pikachu, and whatever else is thrown around all at the same time won't accomplish much because there'll be way too much noise.
You rang?
Seriously though, I'm going to argue that the problem isn't with -ate and Protean, but their most common abusers.
Mega Rayquaza, Mega Mewto Y, and Mega Mewtwo X.
Mega Mewtwo X is
the physical attacker. It's (just about) the bulkiest of the three 'Mons in question, and the one that's (probably) the least predictable. It's fast, boasting 130 base Speed, enough in each defense to discount basic priority spam as being worth anything, and hits like a
truck.
Of the three, Xtwo runs the widest variety of sets. Contrary and Protean are the most common that I've seen, but No Guard, Mold Breaker, Technician, Skill Link, Tough Claws, Adaptability, Scrappy and -ate have all been ones I've seen in the past. Xtwo uses all of them well- Contrary takes advantage of Xtwo's Fighting STAB to launch ever more powerful Superpowers, Protean works the same as it does on anything else, No Guard allows the spreading of status and lets you guarantee powerful Dynamicpunches, Mold Breaker makes short work of Magic Bouncers and Fur Coats (And Shedinja)... the list goes on, and doesn't end.
Also of the three, Xtwo is perhaps the easiest to stop. Fur Coat shuts down everything except some Mold Breakers and No Guards, and it's vulnerable to two of three -ates. However it's also in some ways the hardest to actually
kill; it lacks the crippling Rock, Ice or Dark weaknesses of it's compatriots, is overall the bulkiest (if by a single base HP) and has enough extra speed that very few things can outrun and kill it. Aside from the few peers it has in speed (Ytwo, MGengar and maybe MAlakazam and Maerodactyl) anything killing it is either going to do so via chip damage, SE Priority, Scarf or taking a hit. Not much can do the last; Very few things live an attack from Xtwo without heavy investment. Fewer things can successfully oneshot it in doing so, which means they need to survive two hits. And only the most solid defensive walls can manage
that without healing, and if you're healing then you're probably not doing damage.
252 Atk Life Orb Protean Mega Mewtwo X Play Rough vs. 248 HP / 252+ Def Giratina: 328-385 (65.2 - 76.5%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Life Orb Protean Mega Mewtwo X Precipice Blades vs. 248 HP / 252+ Def Mega Audino: 208-247 (50.8 - 60.3%) -- 39.8% chance to 2HKO after Poison Heal
252 Atk Life Orb Protean Mega Mewtwo X Precipice Blades vs. 252 HP / 252+ Def Aegislash-Shield: 369-437 (113.8 - 134.8%) -- guaranteed OHKO
252 Atk Expert Belt Mega Mewtwo X Icicle Spear (5 hits) vs. 248 HP / 252+ Def Giratina: 290-350 (57.6 - 69.5%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Life Orb Technician Mega Mewtwo X Icicle Spear (3 hits) vs. 248 HP / 252+ Def Giratina: 297-351 (59 - 69.7%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Life Orb Technician Mega Mewtwo X Gear Grind (2 hits) vs. 252 HP / 252+ Def Mega Audino: 380-452 (92.6 - 110.2%) -- approx. 68.8% chance to OHKO
252+ Atk Life Orb Technician Mega Mewtwo X Bonemerang (2 hits) vs. 252 HP / 252+ Def Aegislash-Shield: 338-400 (104.3 - 123.4%) -- guaranteed OHKO
252 Atk Life Orb Tough Claws Mega Mewtwo X Close Combat vs. 252 HP / 252+ Def Mega Audino: 270-320 (65.8 - 78%) -- guaranteed 2HKO after Poison Heal
252 Atk Life Orb Tough Claws Mega Mewtwo X Knock Off (97.5 BP) vs. 248 HP / 252+ Def Giratina: 307-361 (61 - 71.7%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Life Orb Tough Claws Mega Mewtwo X Knock Off (97.5 BP) vs. 252 HP / 252+ Def Aegislash-Shield: 260-307 (80.2 - 94.7%) -- guaranteed 2HKO after Leftovers recovery
These are the most defensive Pokemon without an inherent weakness to Mewtwo's Fighting-type. Unless you equip them with Fur Coat, you
cannot switch them in. You can bring them in after a Parting Shot or U-Turn, sure- but even then, the slightest bit of prior damage and you just lost a Pokemon.
And if you want to be really dickish when running Xtwo? You
still have normal Mewtwo's 154 base Special attack.
4 SpA Life Orb Protean Mega Mewtwo X Draco Meteor vs. 248 HP / 252 SpD Giratina: 374-439 (74.3 - 87.2%) -- guaranteed 2HKO after Leftovers recovery
4 SpA Life Orb Protean Mega Mewtwo X Sludge Bomb vs. 252 HP / 0 SpD Mega Audino: 304-359 (74.1 - 87.5%) -- guaranteed 2HKO after Leftovers recovery
Sure, you'll only be running one of these. That's still an out-of-the-blue move that makes one of the best Fur Coat pokemon unable to wall it, with minimal investment. (I'm not including Chansey in this, because Fur Coat Eviolite Chansey can't come in on anything and reliably wall Xtwo.
You can imposter scout yes, but that doesn't change the fact that you can't
wall it. At all. That's something common to all of these three, actually, but Xtwo provides a good baseline; by running a single countermove, either Giratina or Audino are no longer a problem. With a bit of investment, you can go from threatening 2HKOes to getting guaranteed ones on the slightest bit of prior damage- such as taking a couple of U-Turns, or Stealth Rock.
Mega Mewtwo Y is the frail one of the bunch, only sporting a mere 70 defense. It's also blindingly fast- there are exactly ten Pokemon with the same or more base speed than it has, and four of those (Electrode, Ninjask, Deoxys-N, and Accelgor) are trash in BH. Three of the remaining have at best niche gimmick uses (MSceptile, MBeedrill, and MAlakazam), and the other three are viable only withing their niche (MAerodactyl, Deoxys-S, Deoxys-A).
Ytwo also possesses the
single highest offensive stat in the entire game.
There is no need for subtlety when you bring this thing out; You point, and things
die. Protean Ytwo is the premier special attacker in the tier for a
very good reason- When you use it, there is very little anything can do except hope that the Ytwo isn't carrying an SE move.
252 SpA Spooky Plate Protean Mega Mewtwo Y Judgment vs. 248 HP / 252 SpD Giratina: 372-438 (73.9 - 87%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
252 SpA Protean Mega Mewtwo Y Earth Power vs. 252 HP / 252+ SpD Registeel: 218-258 (59.8 - 70.8%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Protean Mega Mewtwo Y Secret Sword vs. 252 HP / 252+ Def Eviolite Chansey: 500-590 (71 - 83.8%) -- guaranteed 2HKO
252 SpA Spooky Plate Protean Mega Mewtwo Y Judgment vs. 252 HP / 252+ SpD Aegislash-Shield: 288-342 (88.8 - 105.5%) -- 37.5% chance to OHKO
Stopping it from just tearing gaping holes in your team depends
entirely on what moves it happens to be running. And just expecting Ghost Judgment/Secret Sword/Moonblast isn't enough either- I've seen Steel Judgment/Power Gem/Ice Beam/Moonblast before, as well as Rock Judgment/Oblivion Wing/Blue Flare/Sludge Wave. I'm sure you could run Ground Judgment/Power Gem/Sludge Wave/King's Shield too, but I've never seen that one.
The point is, Protean Ytwo can run basically every single Special move under the sun to great effect. Special Moves also are typically less risky than their equivalent physical moves- the 90-ish BP Special moves typically have 100% accuracy under normal conditions, as opposed to the shakier accuracy or unreliable damage of their physical counterparts. Judgment also means that Ytwo can have a 100BP Plate-boosted attack of every type save Normal- and Boomburst outclasses Judgment there.
And if that wasn't bad enough, Protean is
not the only set Ytwo can run.
Be it Simple Tail Glow, setting up an absurdly powerful move in one turn then blasting everything in the way, Contrary Psycho Boost for something that requires very specific sets to stop, Adaptability for incredibly powerful Psystrikes...
Even gimmick sets like Flare Boost or Illusion become dangerous when used by Ytwo, even if only for the shock value.
252 SpA Choice Specs Adaptability Mega Mewtwo Y Psystrike vs. 248 HP / 252 Def Mega Audino: 298-352 (72.8 - 86%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Choice Specs Adaptability Mega Mewtwo Y Psystrike vs. 252 HP / 252+ Def Eviolite Chansey: 588-692 (83.5 - 98.2%) -- guaranteed 2HKO
252 SpA Choice Specs Adaptability Mega Mewtwo Y Psystrike vs. 248 HP / 252+ Def Giratina: 282-332 (56 - 66%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Flare Boost Mega Mewtwo Y Moonblast vs. 248 HP / 252 SpD Giratina: 294-346 (58.4 - 68.7%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Flare Boost Mega Mewtwo Y Psystrike vs. 252 HP / 252+ Def Mega Audino: 204-240 (49.7 - 58.5%) -- 98.8% chance to 2HKO
252 SpA Flare Boost Mega Mewtwo Y Secret Sword vs. 252 HP / 252+ Def Eviolite Chansey: 498-586 (70.7 - 83.2%) -- guaranteed 2HKO
252 SpA Flare Boost Mega Mewtwo Y Secret Sword vs. 252 HP / 252+ Def Registeel: 204-240 (56 - 65.9%) -- guaranteed 2HKO after Leftovers recovery
Ytwo does not have quite the variety that the other two manage. It does not
need it; Only Imposter and priority spam can guarantee that a Protean will do little damage, and even then they get shut down by careful moveset design and King's Shield.
Mega Rayquaza is basically what defines the tier right now. It's fast, obscenely powerful on both ends of the offensive spectrum, and has a good offensive typing that allows it to take advantage of a few of the most powerful offensive abilities. Aerilate and Gale Wings primarily, but it takes advantage of Protean and Contrary too. It's incredibly unpredictable; You could try to switch in a Special wall to take advantage of a predicted Tail Glow-Gale Wings set, only to meet a Superpower coming the other way. You can try your luck with a Rocky Helmet-Soundproof combination to try and counter an Aerilate, but instead get Protean V-Create.
It's unpredictable, and unless you see something like a Diancie on the other team, there's no real way to rule out a given set.
And one of those sets
will take out half your team. That's probably normal; this is BH. There's no way anyone can account for every set on evry 'mon. But Rayquaza's mere
existance removes some Pokemon from being viable
ever. Aerilate Rayquaza is overwhelming in it's raw
power, and 2HKOes almost every single viable Pokemon in the entire
tier either by Fake Out/Extremespeed, or two Boombursts. The exceptions; Specially defensive Registeel, Aegislash and Mega Tyranitar. Maybe Vest/Sand Stream Regirock too, if you count that as viable.
4 SpA Sky Plate Aerilate Mega Rayquaza Boomburst vs. 248 HP / 252 SpD Giratina: 274-324 (54.4 - 64.4%) -- guaranteed 2HKO after Leftovers recovery
4 SpA Sky Plate Aerilate Mega Rayquaza Boomburst vs. 248 HP / 252 SpD Mega Audino: 265-313 (64.7 - 76.5%) -- guaranteed 2HKO
252 Atk Sky Plate Aerilate Mega Rayquaza Extreme Speed vs. 252 HP / 252+ Def Eviolite Chansey: 346-408 (49.1 - 57.9%) -- 96.9% chance to 2HKO
Note that I'm assuming that you're running max speed physically based MRaqyaza. If you dump Specs on it, something I've done in the past, then things look a
little different.
252+ SpA Choice Specs Aerilate Mega Rayquaza Boomburst vs. 252 HP / 252 SpD Eviolite Chansey: 319-376 (45.3 - 53.4%) -- 35.5% chance to 2HKO
252+ SpA Choice Specs Aerilate Mega Rayquaza Boomburst vs. 252 HP / 252+ SpD Registeel: 168-198 (46.1 - 54.3%) -- 8.2% chance to 2HKO after Leftovers recovery
252+ SpA Choice Specs Aerilate Mega Rayquaza Boomburst vs. 248 HP / 252+ SpD Giratina: 397-468 (78.9 - 93%) -- guaranteed 2HKO after Leftovers recovery
252+ SpA Choice Specs Aerilate Mega Rayquaza Boomburst vs. 252 HP / 252+ SpD Aegislash-Shield: 168-198 (51.8 - 61.1%) -- 96.1% chance to 2HKO after Leftovers recovery
252+ SpA Choice Specs Aerilate Mega Rayquaza Boomburst vs. 252 HP / 252 SpD Mega Tyranitar: 217-256 (53.7 - 63.3%) -- 85.9% chance to 2HKO after Poison Heal
These are all Pokemon typically considered to be at least decent checks to Mega Rayquaza; All of them have at least a chance to get 2HKOed. You are
forced to run either Soundproof on something, or an Assault Vest/Sand Stream to be able to guarantee something being able to switch in and not die before attacking.
This is just
disgusting.
Gale Wings does somethig similar. After a single round of setup, easily done by bringing the Rayquaza in on something that Aerilate kills that the opponent doesn't want dead, you can begin firing off boosted Oblivion Wings or Dragon Ascents at whatever your opponent has bought in, or you can instead use a coverage move to break whatever has tried to switch in that thinks it can resist you. The only thing capable of consistenly switching in on this and killing back is Diancie (And possibly Tyranitar); If the Rayquaza is running max speed and has opted for a Steel or Fighting coverage move, then not even they can cope. In a way it's actually worse, because you're leeching off all the HP you might lose from stray Knock Offs or entry hazards- and if you get a Sub up, as many of this set chose to run, then you can't even be Topsy Turvy'd or Impostered.
+3 252+ SpA Mega Rayquaza Oblivion Wing vs. 248 HP / 252 SpD Giratina: 319-376 (63.4 - 74.7%) -- guaranteed 2HKO after Leftovers recovery
+3 252+ SpA Mega Rayquaza Oblivion Wing vs. 248 HP / 252 SpD Mega Audino: 309-364 (75.5 - 88.9%) -- guaranteed 2HKO
+3 252+ SpA Mega Rayquaza Earth Power vs. 252 HP / 252+ SpD Registeel: 372-438 (102.1 - 120.3%) -- guaranteed OHKO
+3 252+ SpA Mega Rayquaza Earth Power vs. 248 HP / 176+ SpD Assault Vest Mega Tyranitar in Sand: 206-244 (51.1 - 60.5%) -- guaranteed 2HKO
And if you think you can deal with one of these then whatever you've chosen probably can't cope with Protean. And everything I mentioned above for Protean on the other two also applies here, but particularly Xtwo's section, because MRayquaza's offensive stats are dead even. You exchange a slight edge in physical power for guaranteed kills on phyiscal walls, or a slight edge in special power for surprise kills on special builds.
252 SpA Protean Mega Rayquaza Secret Sword vs. 248 HP / 76 Def Mega Tyranitar: 472-564 (117.1 - 139.9%) -- guaranteed OHKO
4 SpA Spooky Plate Protean Mega Rayquaza Judgment vs. 248 HP / 8 SpD Giratina: 368-434 (73.1 - 86.2%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Protean Mega Rayquaza Precipice Blades vs. 252 HP / 252 Def Registeel: 296-350 (81.3 - 96.1%) -- guaranteed 2HKO after Leftovers recovery
252 Atk Protean Mega Rayquaza Precipice Blades vs. 252 HP / 252 Def Aegislash-Shield: 296-350 (91.3 - 108%) -- 50% chance to OHKO
4 SpA Spooky Plate Protean Mega Rayquaza Judgment vs. 252 HP / 4+ SpD Aegislash-Shield: 278-330 (85.8 - 101.8%) -- 12.5% chance to OHKO
And the best thing about this is? Rayquaza can run
every single set mentioned above in the analyses for the other two, if at possibly lessenes effectiveness. It certainly has the best Contrary, as Scarf Draco Meteor is a fairly effective Imposterproof method for Contrary.
So why am I making this argument?
Because I suspect that without these three, the abilities in question would not be broken.
-Ate remains a fairly effective ability, with the primary abuser being MDiancie. The thing is, Diancie is
nowhere near as terrifying as Rayquaza; It's slower, and frailler, and Fairy is an overall worse offensive type than Flying is. It also doesn't have quite as much raw
power that Mray could bring to bear.
You also have the Kyurems reclaiming their old ground. They're bulkier than MRay is, significantly so. They're also much slower, and they can only go mixed at the expense of a rather significant chunk of power.
The last is regular old Rayquaza, who behaves much the same as MRay except slower, less powerful, and less bulky.
The thing is though, without MRay overshadowing everything, some other things become viable again. Mega Venusaur becomes a viable check for Diancie, Mega Scizor can take all of them, Fire types can take both too (Not that there are many viable Fire-types that aren't neutral against Ice), while Water types deal with the Kyurems rather effectively. Everything that was made invalid by Rayquaza's mere
existance now has a new breath of air.
But the thing is,
none of them are nearly as overwhelming as MRay is. And it is a very effective way of keeping offense in check; It's a good way of stopping runaway offensive sweepers and faster threats that just aren't easily handled otherwise.
Yes, it's still very good. But it's no longer the absolute dearth on stall it once might have been, making everything weak to Flying utterly nonexistant. It's also still limited by the -ate clause.
Protean... That's a bit trickier. Protean, by definition, has no counters. If something has a high enough offensive presence, then only the moves chosen limit it. On the other hand, while you get STAB on everything your own STAB moves hit no harder than they normally would have. And without the raw
power that the three mentioned above can bring to bear, then they're a lot easier to deal with.
I'll also make this argument, the same one I made for Parental Bond back in the day.
When choosing a Pokemon to fit a role, you have to ask yourself "Is there anything better that can fit this role?"
Right now, for offensive Pokemon, you will almost
always find the answer to be "Yes, one of these three"
There is no way this is healthy for the metagame. It's PDon all over again; You can just run three of them and force people to try and check the same thing three times over.
TL:DR; The problem isn't with -ate or Protean, it's with the Mega Mewtwos and Mega Rayquaza.