Rest in piss u wont be missed.
Anyways with miraidon gone, here are some immediate shifts:
DROPS
B- -> UR
no more miraidon for you to check, self explanatory.
A- -> UR
Same reason as above.
A+ -> A-
It's still a good Mon, but now that miraidon is gone it no longer has its main target to check, which means less reasons to use it, but still amazing with ddance and maybe cm.
B- -> UR
Fake ass Mon, now it can finally rot in UR.
RISES
A+ -> S- or S
With its biggest check ejected from the tier, defensive and offensive variants of Ho-Oh no longer has to worry about miraidon breathing down its neck anymore, now substitute variants are gonna have a much easier time clapping.
A -> A+
With miraidon gone, we can finally run this guy in peace, without you guys constantly worrying about mirai using it free entry.
A+ -> S-
Not only does it not have to worry about taking 99999999999 pts of damage from an electro drift, it can now run resttalk just like in SS again! yay! no scald smh.
A- -> A+
Offensive eternatus could finally see more usage now that it does not have to compete with miraidon, and the fact that teams are not gonna have a ground everywhere also helps. It also helps check Ho-Oh, which is sure to rise.
D -> B
The superior electric dragon has been ejected, some people might still wanna use this now that it no longer competes with miraidon. It also has the use of checking Ho-Oh and Kyogre alike, so I would see it be used more.
D -> B or more idk
Similar to zekrom, it now lacks competition with miraidon and can finally have a niche of some kind.
D -> B or more maybe idk
Also like above, miraidon outclasses them, but with them gone we can see them return.
Rest in piss u wont be missed.
Anyways with miraidon gone, here are some immediate shifts:
DROPS
B- -> UR
no more miraidon for you to check, self explanatory.
A- -> UR
Same reason as above.
A+ -> A-
It's still a good Mon, but now that miraidon is gone it no longer has its main target to check, which means less reasons to use it, but still amazing with ddance and maybe cm.
B- -> UR
Fake ass Mon, now it can finally rot in UR.
RISES
A+ -> S- or S
With its biggest check ejected from the tier, defensive and offensive variants of Ho-Oh no longer has to worry about miraidon breathing down its neck anymore, now substitute variants are gonna have a much easier time clapping.
A -> A+
With miraidon gone, we can finally run this guy in peace, without you guys constantly worrying about mirai using it free entry.
A+ -> S-
Not only does it not have to worry about taking 99999999999 pts of damage from an electro drift, it can now run resttalk just like in SS again! yay! no scald smh.
A- -> A+
Offensive eternatus could finally see more usage now that it does not have to compete with miraidon, and the fact that teams are not gonna have a ground everywhere also helps. It also helps check Ho-Oh, which is sure to rise.
D -> B
The superior electric dragon has been ejected, some people might still wanna use this now that it no longer competes with miraidon. It also has the use of checking Ho-Oh and Kyogre alike, so I would see it be used more.
D -> B or more idk
Similar to zekrom, it now lacks competition with miraidon and can finally have a niche of some kind.
D -> B or more maybe idk
Also like above, miraidon outclasses them, but with them gone we can see them return.
Now that I think of it, while miraidon is gone things that were not as good before are gonna increase in usage, which means arc ground stays good as usual, I guess, so good points.Huge disagree on Clodsire and especially Arceus-Ground. Neither were very good at checking Miraidon, and Arceus-Ground's extremely good offensive capabilities and good matchup into steel types and the now-improved Eternatus are going nowhere. It's also pretty happy to see Ting-Lu gone, especially special sets. Clodsire is very good against Kyogre and Eternatus, both of which will likely thrive in this meta. Its home archetypes are Balance and Stall, which are also a lot better on paper with Miraidon gone.
Also gonna say that Zekrom is absolutely not improving much. Its direct competition is Kyurem-B and Koraidon, not Miraidon. It may also struggle with spikes in usage of Landorus-T and PhysDef Arceus-Ground.
Gonna second the pro Arceus-Electric posts here. It hated Ting-Lu and Iron Treads, and it was hard to justify an Arc slot on an electric special attacker before. However, electric Judgment and Ice Beam is super strong. It doesn't mind Landorus-T or Gliscor at all, and other potential dark horse PhysDef Grounds like Great Tusk and Groudon don't like it either.
View attachment 683567C ->D
As much as I love Mewtwo as a Pokemon, I believe that the Miraidon ban has done far more harm than good to Mewtwo.
As a general rule, since Mewtwo lacks the necessary Abilities, Bulk, Typing, or Moves (having many decent moves and a terrible Ability will never be better than a few busted Moves with a broken Ability; e.g. Caly-I/Caly-S) to do any one thing amazingly, it is forced to flail about in an attempt to do many lesser things decently. Because of this, Mewtwo is highly contingent on having a stable Meta around itself, that it can pick the right "decent" moves--as well as being the fastest Pokemon on the field, to ensure it never has to confront its awful Defenses/Typing. As such, The two things that it hates the most are Instability, and Speed Control.
While the Miraidon meta was not particularly enjoyable from a personal standpoint: The constrictor that it placed upon the broader Meta arguably made it more stable. Assuming that Webs were active (which Mewtwo, as a C-Tier, always needs), it could:
1. If the Miraidon was scarfed: Tera Ground into a predicted Electro Drift--or come in after it K.O.'d something else, and potentially sweep
2. If the Miraidon had Boots: Wear it down through Ting-Lu/Team Support, or Tera Ground in an emergency
3. In the rare case that I had neither Item: Set up on something else--or possibly on the Miraidon if it wasn't running Specs, and potentially sweep
Since some Medley of Ho-Oh, Ting-Lu, Groundceus, and Koraidon were likely going to be on most Teams to manage Miraidon--or make their own progress: A set of Psystrike/Earth Power/Ice Beam/Nasty Plot allowed Mewtwo hit most of the Meta hard, while also exerting heavy Pressure upon many of the stall staples such as Gliscor (OHKO'd by Ice Beam), Blissey/Clod, and Alomomola/Dondozo, who--despite their advantageous Type-Matchup, could usually be defeated by Tera Ground Earth Power Mewtwo before they could defeat it.
1. 252 SpA Hadron Engine Miraidon Electro Drift vs. 0 HP / 56 SpD Mewtwo in Electric Terrain: 298-352 (84.4 - 99.7%) -- guaranteed 2HKO
2. 200+ SpA Tera Ground Mewtwo Earth Power vs. 0 HP / 4 SpD Miraidon: 314-372 (92 - 109%) -- 56.3% chance to OHKO
- Mewtwo could leverage its bulk to its advantage to potentially fend off Miraidon in emergencies, even without Terastalizing.
3. +2 200+ SpA Mind Plate Mewtwo Psystrike vs. 248 HP / 252+ Def Ho-Oh: 364-430 (87.7 - 103.6%) -- 25% chance to OHKO
- Ideally, you would be using this move after setting up/dealing chip damage, but this has won me games in emergencies
A low chance of OHKO'ing Ho-Oh, but keep in mind that this is for its bulkiest common set, and it can be weakened over the course of the game
4. +2 200+ SpA Tera Ground Mewtwo Earth Power vs. 252 HP / 0 SpD Prism Armor Necrozma-Dusk-Mane: 495-582 (124.3 - 146.2%) -- guaranteed OHKO
+2 200+ SpA Tera Ground Mewtwo Earth Power vs. 252 HP / 204+ SpD Prism Armor Necrozma-Dusk-Mane: 375-442 (94.2 - 111%) -- 62.5% chance to OHKO
5. 200+ SpA Tera Ground Mewtwo Earth Power vs. 0 HP / 4 SpD Zacian-Crowned: 314-372 (96.6 - 114.4%) -- 81.3% chance to OHKO
6. +2 200+ SpA Mind Plate Tera Ground Mewtwo Psystrike vs. 200 HP / 0 Def Arceus: 405-477 (93.9 - 110.6%) -- 62.5% chance to OHKO
And keep in mind that these are all without taking the then, viable--Ting Lu's Hazard Stacking into consideration
Bonus for Stall Matchups
7. 200+ SpA Tera Ground Mewtwo Earth Power vs. 252 HP / 0 SpD Skeledirge: 450-530 (109.2 - 128.6%) -- guaranteed OHKO
200+ SpA Tera Ground Mewtwo Earth Power vs. 248 HP / 252+ SpD Skeledirge: 306-362 (74.4 - 88%) -- guaranteed 2HKO
8. 200+ SpA Tera Ground Mewtwo Ice Beam vs. 244 HP / 12 SpD Gliscor: 592-700 (168.1 - 198.8%) -- guaranteed OHKO
200+ SpA Tera Ground Mewtwo Ice Beam vs. 252 HP / 252+ SpD Gliscor: 408-484 (115.2 - 136.7%) -- guaranteed OHKO
Do remember that this is not an argument for why Mewtwo is good, because it isn't good; All of these strategies are dependent on the opponent either lacking matchup familiarity, or making incorrect plays (Scarf Miraidon invalidates this set with as much as a single U-Turn; Status/Chip Damage invalidates Mewtwo in general; Koraidon is also a problem, but I will speak more on it later)
Before the Miraidon Ban, Mewtwo was still a medicore Pokemon that no one lacking a personal interest in it should have run, but the Meta was at least stable enough that you could usually make the stars align 50% of the time and "justify" its place on your Team with enough work. Calyrex-Ice deleted it; Scarf Koraidon sent it back into the incubator, and E-Killer against a Mewtwo that wasn't already at +2, well... (it's in the name), but it was also consistent enough for me to consistently reach 1600+ (and sometimes higher) on the Ladder with it before the recent Legality Shifts.
Now that Miraidon is gone, however, that aforementioned Meta-Stability has all but vanished, and Mewtwo's viabiltiy has gone with it.
Just like other "bad" Pokemon--such as Ting-Lu and Treads, improved by--and were even dependent on Miraidon being in the Tier: Mewtwo was also another Pokemon that benefitted from its presence, as well as the effect that it had on the builder. It may have been noticed that I have not mentioned Koraidon very much throughout this post, and that is for the simple reason that, between the two, it is, by far, the more difficult matchup for Mewtwo. While Miraidon was arguably more toxic than Koraidon, it was much harder for it to snowball games in the same way that it's ancient counterpart could. It could still do it, but its relatively riskier moves in comparison to its counterpart generally caused Miraidon to prefer attacking its prey by dismantling their Team incrementally, rather than attempting to cleave through said Teams in a single assault--which Koraidon could do far more consistently. In regards to its more common Drift/Meteor sets: The higher risk of Meteor between the two moves, generally meant that opposing Miraidon players were more likely to attempt a Drift over Meteor in situations where both moves could reasonably K.O., to avoid ceding an excessive amount of ground to the anticipated switch-in.
Because of this aforementioned vulnerability, Miraidon gave Mewtwo a unique option which it didn't receive from any other relevant Pokemon, to set up a potentially game-ending Boost for free over the course of any given game, while, most importantly, improving its matchups against the rest of the Tier in the process.
Now that Mewtwo has lost the free "anchor" of Miraidon to potentially set up its mandatory Nasty Plot, it is forced to take the full force of whatever attack its opponents have prepared for it, since, Tera-Drain as it is: Tera Fire is ineffective in practice due to every Mon in the Tier already having a Fire-Contingency for Koraidon, and none of its other Tera Types outside of Ground allow it take on the Gauntlet of NDM/Zacian-Crowned, which it necessarily needs to at least be capable of OHKO'ing at +2: The bare minimum for what it must do to justify the Teamslot.
Mewtwo also suffers now because, with an apparent spike in the usage of Bee/Glimm, more Teams are beginning to run their own Glimm/Webs/Boots in an already infested Meta to get around those of their opponent's. This, in turn, has caused the aforementioned Mind Plate/Modest Set to become less reliable as the risk of getting hit/outsped starts to outweigh the already compromised "benefits", pressuring Mewtwo into capitulating in its own right by running a standard Timid/Boots set of its own--which is nearly an entire Life Orb weaker than the aforementioned set, so as to avoid becoming dead-slotted by the ubiquitous Glimm/Bee.
This has caused Mewtwo's damage output and K.O.'ing potential to tank against a large portion of the Tier, becoming even more Plot reliant than it already was, and most notably, makes Mewtwo completely incapable of OHKO'ing Ho-Oh, even with a Boost
+2 252 SpA Tera Ground Mewtwo Psystrike vs. 248 HP / 252+ Def Ho-Oh: 286-337 (68.9 - 81.2%) -- guaranteed 2HKO
Mewtwo cannot afford to take any hit from Ho-Oh, much less a Sacred Fire--and the Burn that accompanies it, but Ho-Oh is a ubiquitous, powerful Pokemon, and Mewtwo has to do something about it. Since Psystrike is necessary to insulate Mewtwo from becoming a perfect Tera-Drain, and Nasty Plot/Tera-Ground + Earth Power are also needed to cover the Meta-Threats: This only leaves Mewtwo with one Moveslot to either run Power Gem--itself not OHKO'ing until +2--for Ho-Oh, leaving your Mewtwo vulnerable to opposing Dragon Dance Rayquaza--alongside the rare--but still used Ting-Lu, Groudon, and most importantly, the very not-rare, Gliscor, impairing your ability to face Stall, or surrendering any hope of stability in the Ho-Oh Matchup to fortify your insurance against those aforementioned Matchups which can otherwise potentially K.O. your Mewtwo from Team Preview.
And even if you pick the right moves/items/EVs, you still get deleted by Koraidon...
In retrospect, I do not know why I ever entertained the thought, but whereas I had hoped that Scarf-Koraidon would perhaps see a slight drop in usage upon the Mirai ban: On the contrary, it almost feels as though its usage has gone up. It should be made abundantly clear that there is nothing Mewtwo can do to Scarf-Koraidon. (1) You cannot use Webs, because Speed Creep has turned Base 130 Speed into the new Base 110; (2) You cannot Tera, because Mewtwo needs Tera Ground--and even if you decided to use another Tera, good luck picking the right one! If you pick Tera Fairy, you can buy yourself some time as you flail into the rest of the Tier--or lose to the re-switch Tera Fire Flare Blitz if they didn't Outrage-lock themselves, or if you picked Tera Fire, you can either get 2-Shotted by Flare Blitz + Tera Fire Flare Blitz as you fruitlessly try to set up Nasty Plot (or simply use Psystrike on the first one and deal 0% to their Switch-In); Force a switch and eventually deal with problem "1" again, or you can run 50/50s with the rest of the Tier between clicking Fire Miss/Flamethrower and hoping they don't use their Tera (which they will), or using Midstrike and having it bounce off whatever proceeds to K.O. you.
If Miraidon is what elevated Mewtwo to the point where I would have even considered a potential B- Placement, had I posted here earlier: Koraidon's uncontested dominance will be what plummets Mewtwo into the depths of unranked. Koraidon is simultaneously oppressive enough to always subjugate Mewtwo, and just"manageable" enough compared to it and Miraidon together, that the Meta is able to more safely experiment with different Mons/Sets--and thus, destabilize, which is the last thing that an already Moveslot-Compressed Mewtwo would ever want to happen
Perhaps in a Miraidon + Koraidon Meta, Mewtwo could be usable, and perhaps, in a theoretical Miraidon only/Bikeless Meta, Mewtwo could even be good, but a Koraidon only Meta is the worst thing that could ever possibly happen to Mewtwo right now, and unless Yveltal somehow returns to the game, or Caly-S drops, I don't think that's going to change.
Since the Miraidon ban we've been seeing the first Mewtwo in high level tournament play in years as a fat breaker on offense (See Ox v. Strap SSNL Finals) taking a role which Miraidon would've otherwise. So I wouldn't be so sure.View attachment 683567C ->D
As much as I love Mewtwo as a Pokemon, I believe that the Miraidon ban has done far more harm than good to Mewtwo.
As a general rule, since Mewtwo lacks the necessary Abilities, Bulk, Typing, or Moves (having many decent moves and a terrible Ability will never be better than a few busted Moves with a broken Ability; e.g. Caly-I/Caly-S) to do any one thing amazingly, it is forced to flail about in an attempt to do many lesser things decently. Because of this, Mewtwo is highly contingent on having a stable Meta around itself, that it can pick the right "decent" moves--as well as being the fastest Pokemon on the field, to ensure it never has to confront its awful Defenses/Typing. As such, The two things that it hates the most are Instability, and Speed Control.
While the Miraidon meta was not particularly enjoyable from a personal standpoint: The constrictor that it placed upon the broader Meta arguably made it more stable. Assuming that Webs were active (which Mewtwo, as a C-Tier, always needs), it could:
1. If the Miraidon was scarfed: Tera Ground into a predicted Electro Drift--or come in after it K.O.'d something else, and potentially sweep
2. If the Miraidon had Boots: Wear it down through Ting-Lu/Team Support, or Tera Ground in an emergency
3. In the rare case that I had neither Item: Set up on something else--or possibly on the Miraidon if it wasn't running Specs, and potentially sweep
Since some Medley of Ho-Oh, Ting-Lu, Groundceus, and Koraidon were likely going to be on most Teams to manage Miraidon--or make their own progress: A set of Psystrike/Earth Power/Ice Beam/Nasty Plot allowed Mewtwo hit most of the Meta hard, while also exerting heavy Pressure upon many of the stall staples such as Gliscor (OHKO'd by Ice Beam), Blissey/Clod, and Alomomola/Dondozo, who--despite their advantageous Type-Matchup, could usually be defeated by Tera Ground Earth Power Mewtwo before they could defeat it.
1. 252 SpA Hadron Engine Miraidon Electro Drift vs. 0 HP / 56 SpD Mewtwo in Electric Terrain: 298-352 (84.4 - 99.7%) -- guaranteed 2HKO
2. 200+ SpA Tera Ground Mewtwo Earth Power vs. 0 HP / 4 SpD Miraidon: 314-372 (92 - 109%) -- 56.3% chance to OHKO
- Mewtwo could leverage its bulk to its advantage to potentially fend off Miraidon in emergencies, even without Terastalizing.
3. +2 200+ SpA Mind Plate Mewtwo Psystrike vs. 248 HP / 252+ Def Ho-Oh: 364-430 (87.7 - 103.6%) -- 25% chance to OHKO
- Ideally, you would be using this move after setting up/dealing chip damage, but this has won me games in emergencies
A low chance of OHKO'ing Ho-Oh, but keep in mind that this is for its bulkiest common set, and it can be weakened over the course of the game
4. +2 200+ SpA Tera Ground Mewtwo Earth Power vs. 252 HP / 0 SpD Prism Armor Necrozma-Dusk-Mane: 495-582 (124.3 - 146.2%) -- guaranteed OHKO
+2 200+ SpA Tera Ground Mewtwo Earth Power vs. 252 HP / 204+ SpD Prism Armor Necrozma-Dusk-Mane: 375-442 (94.2 - 111%) -- 62.5% chance to OHKO
5. 200+ SpA Tera Ground Mewtwo Earth Power vs. 0 HP / 4 SpD Zacian-Crowned: 314-372 (96.6 - 114.4%) -- 81.3% chance to OHKO
6. +2 200+ SpA Mind Plate Tera Ground Mewtwo Psystrike vs. 200 HP / 0 Def Arceus: 405-477 (93.9 - 110.6%) -- 62.5% chance to OHKO
And keep in mind that these are all without taking the then, viable--Ting Lu's Hazard Stacking into consideration
Bonus for Stall Matchups
7. 200+ SpA Tera Ground Mewtwo Earth Power vs. 252 HP / 0 SpD Skeledirge: 450-530 (109.2 - 128.6%) -- guaranteed OHKO
200+ SpA Tera Ground Mewtwo Earth Power vs. 248 HP / 252+ SpD Skeledirge: 306-362 (74.4 - 88%) -- guaranteed 2HKO
8. 200+ SpA Tera Ground Mewtwo Ice Beam vs. 244 HP / 12 SpD Gliscor: 592-700 (168.1 - 198.8%) -- guaranteed OHKO
200+ SpA Tera Ground Mewtwo Ice Beam vs. 252 HP / 252+ SpD Gliscor: 408-484 (115.2 - 136.7%) -- guaranteed OHKO
Do remember that this is not an argument for why Mewtwo is good, because it isn't good; All of these strategies are dependent on the opponent either lacking matchup familiarity, or making incorrect plays (Scarf Miraidon invalidates this set with as much as a single U-Turn; Status/Chip Damage invalidates Mewtwo in general; Koraidon is also a problem, but I will speak more on it later)
Before the Miraidon Ban, Mewtwo was still a medicore Pokemon that no one lacking a personal interest in it should have run, but the Meta was at least stable enough that you could usually make the stars align 50% of the time and "justify" its place on your Team with enough work. Calyrex-Ice deleted it; Scarf Koraidon sent it back into the incubator, and E-Killer against a Mewtwo that wasn't already at +2, well... (it's in the name), but it was also consistent enough for me to consistently reach 1600+ (and sometimes higher) on the Ladder with it before the recent Legality Shifts.
Now that Miraidon is gone, however, that aforementioned Meta-Stability has all but vanished, and Mewtwo's viabiltiy has gone with it.
Just like other "bad" Pokemon--such as Ting-Lu and Treads, improved by--and were even dependent on Miraidon being in the Tier: Mewtwo was also another Pokemon that benefitted from its presence, as well as the effect that it had on the builder. It may have been noticed that I have not mentioned Koraidon very much throughout this post, and that is for the simple reason that, between the two, it is, by far, the more difficult matchup for Mewtwo. While Miraidon was arguably more toxic than Koraidon, it was much harder for it to snowball games in the same way that it's ancient counterpart could. It could still do it, but its relatively riskier moves in comparison to its counterpart generally caused Miraidon to prefer attacking its prey by dismantling their Team incrementally, rather than attempting to cleave through said Teams in a single assault--which Koraidon could do far more consistently. In regards to its more common Drift/Meteor sets: The higher risk of Meteor between the two moves, generally meant that opposing Miraidon players were more likely to attempt a Drift over Meteor in situations where both moves could reasonably K.O., to avoid ceding an excessive amount of ground to the anticipated switch-in.
Because of this aforementioned vulnerability, Miraidon gave Mewtwo a unique option which it didn't receive from any other relevant Pokemon, to set up a potentially game-ending Boost for free over the course of any given game, while, most importantly, improving its matchups against the rest of the Tier in the process.
Now that Mewtwo has lost the free "anchor" of Miraidon to potentially set up its mandatory Nasty Plot, it is forced to take the full force of whatever attack its opponents have prepared for it, since, Tera-Drain as it is: Tera Fire is ineffective in practice due to every Mon in the Tier already having a Fire-Contingency for Koraidon, and none of its other Tera Types outside of Ground allow it take on the Gauntlet of NDM/Zacian-Crowned, which it necessarily needs to at least be capable of OHKO'ing at +2: The bare minimum for what it must do to justify the Teamslot.
Mewtwo also suffers now because, with an apparent spike in the usage of Bee/Glimm, more Teams are beginning to run their own Glimm/Webs/Boots in an already infested Meta to get around those of their opponent's. This, in turn, has caused the aforementioned Mind Plate/Modest Set to become less reliable as the risk of getting hit/outsped starts to outweigh the already compromised "benefits", pressuring Mewtwo into capitulating in its own right by running a standard Timid/Boots set of its own--which is nearly an entire Life Orb weaker than the aforementioned set, so as to avoid becoming dead-slotted by the ubiquitous Glimm/Bee.
This has caused Mewtwo's damage output and K.O.'ing potential to tank against a large portion of the Tier, becoming even more Plot reliant than it already was, and most notably, makes Mewtwo completely incapable of OHKO'ing Ho-Oh, even with a Boost
+2 252 SpA Tera Ground Mewtwo Psystrike vs. 248 HP / 252+ Def Ho-Oh: 286-337 (68.9 - 81.2%) -- guaranteed 2HKO
Mewtwo cannot afford to take any hit from Ho-Oh, much less a Sacred Fire--and the Burn that accompanies it, but Ho-Oh is a ubiquitous, powerful Pokemon, and Mewtwo has to do something about it. Since Psystrike is necessary to insulate Mewtwo from becoming a perfect Tera-Drain, and Nasty Plot/Tera-Ground + Earth Power are also needed to cover the Meta-Threats: This only leaves Mewtwo with one Moveslot to either run Power Gem--itself not OHKO'ing until +2--for Ho-Oh, leaving your Mewtwo vulnerable to opposing Dragon Dance Rayquaza--alongside the rare--but still used Ting-Lu, Groudon, and most importantly, the very not-rare, Gliscor, impairing your ability to face Stall, or surrendering any hope of stability in the Ho-Oh Matchup to fortify your insurance against those aforementioned Matchups which can otherwise potentially K.O. your Mewtwo from Team Preview.
And even if you pick the right moves/items/EVs, you still get deleted by Koraidon...
In retrospect, I do not know why I ever entertained the thought, but whereas I had hoped that Scarf-Koraidon would perhaps see a slight drop in usage upon the Mirai ban: On the contrary, it almost feels as though its usage has gone up. It should be made abundantly clear that there is nothing Mewtwo can do to Scarf-Koraidon. (1) You cannot use Webs, because Speed Creep has turned Base 130 Speed into the new Base 110; (2) You cannot Tera, because Mewtwo needs Tera Ground--and even if you decided to use another Tera, good luck picking the right one! If you pick Tera Fairy, you can buy yourself some time as you flail into the rest of the Tier--or lose to the re-switch Tera Fire Flare Blitz if they didn't Outrage-lock themselves, or if you picked Tera Fire, you can either get 2-Shotted by Flare Blitz + Tera Fire Flare Blitz as you fruitlessly try to set up Nasty Plot (or simply use Psystrike on the first one and deal 0% to their Switch-In); Force a switch and eventually deal with problem "1" again, or you can run 50/50s with the rest of the Tier between clicking Fire Miss/Flamethrower and hoping they don't use their Tera (which they will), or using Midstrike and having it bounce off whatever proceeds to K.O. you.
If Miraidon is what elevated Mewtwo to the point where I would have even considered a potential B- Placement, had I posted here earlier: Koraidon's uncontested dominance will be what plummets Mewtwo into the depths of unranked. Koraidon is simultaneously oppressive enough to always subjugate Mewtwo, and just"manageable" enough compared to it and Miraidon together, that the Meta is able to more safely experiment with different Mons/Sets--and thus, destabilize, which is the last thing that an already Moveslot-Compressed Mewtwo would ever want to happen
Perhaps in a Miraidon + Koraidon Meta, Mewtwo could be usable, and perhaps, in a theoretical Miraidon only/Bikeless Meta, Mewtwo could even be good, but a Koraidon only Meta is the worst thing that could ever possibly happen to Mewtwo right now, and unless Yveltal somehow returns to the game, or Caly-S drops, I don't think that's going to change.