National Dex (Ubers) Rate my Nat Dex Legendary team and what I can change please

[Edward1941]

Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 252 Atk / 132 Spa / 124 Spe
Lonely Nature
- Photon Geyser
- Sunsteel Strike
- Earthquake
- Dragon Dance
Mainly a physical attacker, but have Photon Geyser for Z-Move and secondary STAB
KO'd easily, so can't really set up.
Maybe using my transformation too soon?

Mega-Mewtwo Y @ Mewtwonite Y
Ability: Insomnia
EVs: 252 SPA / 252 Spe / 4 Def
Modest Nature
- Psystrike (main Stab)
- Shadow Ball
- Aura Sphere
- Recover

Never has a chance to use Recover, usually one-shotted if the other guy has a chance to attack
Main Nuke/Sweeper
Too fragile

Zygarde @ Leftovers
Ability: Power Construct
Tera Type: Dragon
EVs: 252 HP / 252 Attack / 4 Def
- Thousand Arrows
- Extreme Speed (used to be Thousand Waves, but 2 ground moves with same BP seem a bit pointless, maybe Secondary STAB instead?)
- Dragon Dance
- Substitute

Fine, but substitute (almost) never lasts long enough
Bulky/Secondary Sweeper
Sort of easy to set up due to huge HP, though
Haven't had a chance to try Extreme Speed yet.

Groudon-Primal @ Red Orb
Ability: Desolate Land
Tera Type: Ground
EVs: 252 Atk / 252 SpA / 4 Spe
Lonely Nature
- Eruption
- Precipice Blades
- Stone Edge (hate the accuracy, but oh well)
- Swords Dance
Really good overall
Find it easier to use Eruption over Origin Pulse on Kyogore for some reason
252 in both attack EVs due to being a mixed attacker

Kyogre-Primal @ Blue Orb
Ability: Primordial Sea
Tera Type: Water
EVs: 252 HP / 252 SpA / 4 SpDef
Modest Nature
- Water Spout
- Thunder
- Ice Beam
- Calm Mind
Strong, but Water Spout almost never used.
Water Spout used over Origin Pulse due to Origin Pulse's accuracy issues
Bulky Sweeper

Flutter Mane @ Booster Energy
Ability: Photosynthesis (Terra Type Ground)
EVs: 252 Spa / 252 Spe / 4 Def
Modest Nature
- Moonblast
- Shadow Ball
- Tera Blast
- Calm Mind
Haven't played anything past gen 7, so no clue how to use Tera
Good coverage, but weak Tera choice I think. looking for something to hit steels
again, Ko'd too easily (seems to be a running theme with my team)

Biggest problems I see are my team (outside of my Primals) are too fragile and just too weak to dark/ghost
Also don't have Stealth Rock, Rapid Spin, or Defog, but due to Heavy-Duty Boots, SR seems useless (played a few games and haven't even seen it. Not to mention this team isn't particularly weak to SR anyway)
Would Drop Zygarde and Mega-Mewtwo for Xernaes and Mega Raquaza if they were legal (I get Raquazza, but why is Xerneas banned? For that matter, of all Pokemon SHEDNINJA is banned?) And probably change Flutter Mane to Marshadow if that were the case.
Again, since I haven't played gens 8 or 9, I have little clues about the Pokemon from those gens. Only reason I'm even playing this is because Showdown doesn't have Gens 6 or 7 Ubers/Anything goes.

 

[Anchor9]

Xerneus is banned because Tera allowed it to break past previous checks such as Necrozma-DM and Ho-Oh while allowing it to set up Geomancy with ease by turning its weaknesses to resists.
Shedinja was banned because it could Tera Electric Air Balloon to avoid all hits, while also being able to be Heavy-Duty Boots Tera-whatever you need to check.

I’m gonna try to give some advice. The team structure is pretty good, although EVs are weird considering the sets.

Big Changes:
This looks like an HO team that definitely appreciates webs, so I’m going to replace Zygarde with Shuckle:


Shuckle @ Mental Herb
Ability: Sturdy
Tera Type: Steel
EVs: 248 HP / 8 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Stealth Rock
- Encore
- Sticky Web
- Final Gambit

Classic lead with Mental Herb for the garunteed webs and Tera Steel to block Mortal Spin Glimmora.

Flutter Mane is kinda useless in this Meta and I don’t get why it’s still ranked. I’d replace it with Arceus-Fairy so the team isn’t run over by Yveltal.


Arceus-Fairy @ Pixie Plate
Ability: Multitype
EVs: 216 HP / 156 Def / 136 Spe
Tera Type: Dark
Timid Nature
- Calm Mind
- Judgment
- Recover
- Will-O-Wisp / Taunt / Earth Power

Fourth move is pretty flexible. Will-O-Wisp to check Marshadow and setup on non-Facade Mega Salamence. Taunt to shut down defensive Yveltal which can cause problems as Tera Steel. Earth Power to hit Primal Groudon.

Smaller Changes:

: Make this max Speed with Jolly. SpA EVs on a completely physical attacker makes no sense. If you want to run Sunsteel Strike on Ultra Necrozma, replace Earthquake. Stone Edge is pretty mandatory to hit Ho-Oh and Yveltal.

: Replace Recover with Nasty Plot to maximize breaking power. Recover is useful as MMY is too fragile to effectively use it. Shadow Ball isn’t that useful for coverage as Fire Blast hits Necrozma-DM harder while hitting Ferrothorn. If you use Fighting coverage replace Aura Sphere with Focus Blast as it’s better to break past Arceus-Dark. This could possibly be replaced with Meteor Beam Eternatus as that keeps Webs down pretty efficiently while serving as another check to Yveltal and Marsh.


Eternatus @ Power Herb
Ability: Pressure
Tera Type: Fairy
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Meteor Beam
- Dynamax Cannon
- Recover
- Fire Blast / Sludge Wave

: Make max Speed to fully take advantage of Webs with either Hasty or Naive as the nature to maximize Eruption damage. Overheat is an also an option so that you can still beat Dondozo after taking damage.

: make max Speed with Timid. You want to keep Water Sprout as intact as possible.

Hope this helped!

 

[Edward1941]

Thanks for the quick reply. A few things, first, (and I'll concede that it probably doesn't work) but this is sort of half Hyper Offense and Half Bulky Offense. I'll take your suggestion on Arceus (even though I loved Gens 6 and 7 Ubers/AG, I actually never used Arceus). The reason Ultra Necrozoma has the SpA is for Photon Geyser.
As far as natures go (especially on my bulky Pokemon, like Groudon and Kyogore), I prefer Modest/Adamant over Timid/Jolly is I prefer to hit harder than faster. That might be why sometimes my Mewtwo seems to be too fragile (Modest over Timid). Also, Stone Edge is bad enough. I'd take some damage over Focus Miss any day. I mean, I've lost games on 95% accuracy moves. Think how many more I'll lose over a 70% miss rate (I know it's hit, but it feels like miss)
This is a Legendary/Mystical theme team, so Shuckle (no matter how much it would fit) doesn't work. Should I replace Zygarde with Eternatus instead?

 

[Anchor9]

Thanks for the quick reply. A few things, first, (and I'll concede that it probably doesn't work) but this is sort of half Hyper Offense and Half Bulky Offense. I'll take your suggestion on Arceus (even though I loved Gens 6 and 7 Ubers/AG, I actually never used Arceus). The reason Ultra Necrozoma has the SpA is for Photon Geyser.
As far as natures go (especially on my bulky Pokemon, like Groudon and Kyogore), I prefer Modest/Adamant over Timid/Jolly is I prefer to hit harder than faster. That might be why sometimes my Mewtwo seems to be too fragile (Modest over Timid). Also, Stone Edge is bad enough. I'd take some damage over Focus Miss any day. I mean, I've lost games on 95% accuracy moves. Think how many more I'll lose over a 70% miss rate (I know it's hit, but it feels like miss)
This is a Legendary/Mystical theme team, so Shuckle (no matter how much it would fit) doesn't work. Should I replace Zygarde with Eternatus instead?

Photon Geyser uses either the user’s physical or special attack, whichever is higher. So with Dragon Dance, Photon Geyser will always be physical. Stone Edge missing can be infuriating but that coverage is invaluable.
I think Shuckle is pretty essential for this sort of team, because if Primal Groudon or Kyogre get hit, Eruption and Water Sprout no longer does any damage. Theme teams usually aren’t as viable.

 

[bumboclaat]

Anchor9 has made some pretty good points, importantly that theme teams arn't really viable. As for Xerneas, it is banned because handling the various tera types and coverage it runs, on top of its teamates is too much. The suspect thread can be found here if you want to read more about it. As mentioned above, this is a weird mish-mash of hyper offence and bulky offence and it is better to pick one direction to go in. The Shuckle set that Anchor9 suggested is fine, though Smeargle works as well as a Sticky Web setter. Stealth Rock, and by extension, entry hazards are incredibly strong and hyper offence teams aim to set them up through a suicide lead and maintain them via offensive pressure.

As for the mons, here are some suggested changes. I'll be taking them from the strategy dex rather than tweaking the EV spreads as it is better to stick to standard stuff when learning the tier. The strategy dex is currently being updated, but most mons at this point do have completed analyses which can offer tips on how to use said mon and suggestions on teamates.

Necrozma-Dusk Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 24 HP / 252 Atk / 92 Def / 140 Spe
Adamant Nature
- Dragon Dance / Swords Dance
- Photon Geyser
- Earthquake
- Stone Edge / X-Scissor
Dex Page

Special Ultra Necrozma does exist, but I'd recommend sticking to the physical set for now. You want to invest fully in one side rather than go mixed. Because this will be a Sticky Web team, Swords Dance is usable. If you opt for this route X-Scissor is an option to deal pretty significant damage to Arceus-Dark at +2, though Stone Edge provides more general utility to remove Pokemon such as Ho-Oh and Yveltal.

Mewtwo @ Mewtwonite Y
Ability: Unnerve
EVs: 88 Def / 204 SpA / 216 Spe
Timid Nature
- Nasty Plot
- Psystrike
- Fire Blast
- Ice Beam / Focus Blast
Dex Page
This is the standard MMY set. Aura Sphere just does not do enough damage and MMY is frail enough that it is forced to bite the bullet on Focus Blast accuracy as it is going to get KO'd by Arceus-Dark if it doesn't KO it first. Missing 30% of the time is better than getting KO'd 100% of the time because you're using Aura Sphere. Fire Blast is your main way to handle Steel-types such as NDM and Ferrothorn. Ice Beam and Focus Blast are both viable options. MMY suffers from pretty severe 4MSS and is going to be missing coverage no matter what it choses. Ice Beam hits Yveltal while Focus Blast hits Arceus-Dark and also means it isn't walled by Dondozo.

Zygarde @ Leftovers
Ability: Power Construct
EVs: 12 HP / 216 Atk / 48 SpD / 232 Spe
Tera Type: Ground / Fairy
Adamant Nature
- Dragon Dance
- Thousand Arrows
- Substitute
- Dragon Tail / Glare
Dex Page

FWIW, the Trapper Zygarde set can run both Thousand Arrows and Thousand Waves, but that isn't going to fit on this team. Extreme Speed is really bad on Zygarde. It sort of works because Zygarde is such a good mon to begin with, but it benefits more from other moves. Zygarde is intially pretty weak so it requires significant Attack investment on Dragon Dance sets. At +1 it outspeeds Eternatus and this investment lets it hit pretty hard, especially if you opt for Tera Ground. I generally perfer Dragon Tail, but Glare works as well as Thousand Arrows is busted enough to work as the only attacking move.

Groudon @ Red Orb
Ability: Drought
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Eruption
- Precipice Blades
- Rock Tomb
- Swords Dance

or

Groudon @ Red Orb
Ability: Drought
EVs: 140 HP / 252 Atk / 116 Spe
Adamant Nature
- Rock Polish
- Swords Dance
- Precipice Blades
- Heat Crash / Stone Edge
Dex Page
As Anchor9 mentioned, Primal Groudon really needs max speed in order to properly make use of Eruption. With Sticky Web up it can outspeed the entire unboosted metagame and can wallbreak early on for you. Double Dance sets also work on these types of teams.

Kyogre @ Blue Orb
Ability: Drizzle
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
- Origin Pulse
- Ice Beam
- Thunder
- Calm Mind
Dex Page

Similar to Primal Groudon, Primal Kyogre needs Speed investment to utilize Water Spout. I'm not really a fan of the move to begin with, but it can work on Sticky Web teams. You can invest some Speed into bulk, but I'd highly recommend keeping at least 255 Speed. Flutter Mane can be replaced by Shuckle or Smeargle.

 

[Edward1941]

I ended up going with the Shuckle on it. And dropped Zygarde for Eternatus. Went max speed on Groudon (Eruption/Precipice Blades/Stone Edge/Swords Dance)/Kyogre(kept Water Spout). Also replaced Mewtwo's moves with Nasty Plot instead of Recover and Fire Blast/Ice Beam instead of Shadow Ball and Aura Sphere. Originally had Flamethrower, but FB isn't as bad as I remember (recent change, haven't actually had a chance to try FB over Flamethrower). But there are real times I WISH I had Aura Sphere on him. Will not touch Focus Miss with a 10-foot-pole. I will literally take NO move over FB, so I'm never even tempted to hit it. Sort of the same reason I've never touched Pokemon since Gen 7. Game Freak has become the new EA. And I think EA might actually have a shade better ethics.