I need another RMT [ORAS Ubers]

Question

What do you guys think of this team?
Mew @ Leftovers
Ability: Synchronize
Shiny: Yes
EVs: 4 HP / 252 SpD / 252 Spe
Careful Nature
- Baton Pass
- Nasty Plot
- Amnesia
- Barrier

Yveltal @ Choice Specs
Ability: Dark Aura
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Naive Nature
- Oblivion Wing
- Psychic
- Dark Pulse
- Dragon Claw

Mewtwo @ Mewtwonite Y
Ability: Pressure
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Fire Blast
- Psychic
- Blizzard
- Shadow Ball

Arceus @ Zap Plate
Ability: Multitype
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Judgment
- Psychic
- Dragon Pulse
- Ice Beam

Xerneas @ Leftovers
Ability: Fairy Aura
Shiny: Yes
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Moonblast
- Geomancy
- Light Screen
- Flash Cannon

Giratina-Origin @ Griseous Orb
Ability: Levitate
Shiny: Yes
EVs: 252 Def / 252 SpA
Sassy Nature
- Shadow Force
- Draco Meteor
- Shadow Ball
- Dragon Pulse

Comments

You're missing 4 EVs on Giratina.

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@Astronautical: These EVs don't really matter, it's better to keep an odd number of HP to take less from Stealth Rock but Giratina doesn't fear it.

Answer 1

Let me see....

Your team has quite a few weaknesses which I shall try to patch up in this rate I'm about to give now. First things first, as ItsGuillotine has stated, Mew is not very viable in Ubers as its stats are considered low by Ubers Standards, and it is setup bait for many dangerous Uber threats. Moreover, that set is completely shut down by Taunt.

Almost your entire team is made up of Special Attackers, and they are walled by any dedicated Special wall out there. The first thing I will suggest is to replace Mew with Specially Defensive Primal Groudon, as with your current team, its completely destroyed by:

Power Herb Geomancy Xerneas just sweeps your team once it nabs a Geomancy, as long as Stealth Rocks are on the field:

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 252+ SpD Mew: 331-390 (81.9 - 96.5%) -- 62.5% chance to OHKO after Stealth Rock

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 0 SpD Yveltal: 932-1100 (237.1 - 279.8%) -- guaranteed OHKO

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mega Mewtwo Y: 390-460 (110.4 - 130.3%) -- guaranteed OHKO

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 4 HP / 0 SpD Arceus-Electric: 391-462 (102.3 - 120.9%) -- guaranteed OHKO

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 4 HP / 0 SpD Fairy Aura Xerneas: 466-550 (118.2 - 139.5%) -- guaranteed OHKO

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 252+ SpD Giratina-O: 662-780 (150.1 - 176.8%) -- guaranteed OHKO

Specially Defensive Primal Groudon can check Geomancy Xerneas once it gets to +2:

+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 252+ SpD Primal Groudon: 177-208 (43.8 - 51.4%) -- 9% chance to 2HKO

It only has a 9% chance to 2HKO while Primal Groudon easily 2HKOes even with 4 Atk investment:

4 Atk Primal Groudon Precipice Blades vs. 104 HP / 32 Def Xerneas: 220-259 (52.5 - 61.8%) -- guaranteed 2HKO

Alternatively you can run Thunder Wave to paralyze it and cut its sweep short for sure.

Heres a set:

Groudon @ Red Orb
Ability: Drought ===> Desolate Land
EVs: 252 HP/ 4 Def/252 SpDef
Careful/Sassy Nature
-Precipice Blades
-Rock Slide/Lava Plume
-Stealth Rock
-Roar/Thunder Wave/Toxic

This Primal Groudon set also allows it to counter Primal Kyogre (as long as Desolate Land is active), as it can only do this in return:

252+ SpA Primal Kyogre Hidden Power Ground vs. 252 HP / 252+ SpD Primal Groudon: 144-170 (35.6 - 42%) -- guaranteed 3HKO

252+ SpA Primal Kyogre Ice Beam vs. 252 HP / 252+ SpD Primal Groudon: 107-126 (26.4 - 31.1%) -- guaranteed 4HKO

4 Atk Primal Groudon Precipice Blades vs. 4 HP / 0 Def Primal Kyogre: 237-280 (69.2 - 81.8%) -- guaranteed 2HKO

Every team needs a switch to Kyogre, and Primal Groudon is a perfect switch into it.

Yveltal can act as a solid Physical Wall, an idea of how bulky Physically Defensive Yveltal is that it is bulkier than fully invested Skarmory.

252 Atk Mega Gallade Close Combat vs. 248 HP / 252+ Def Yveltal: 175-207 (38.4 - 45.4%) -- guaranteed 3HKO after Leftovers recovery

252 Atk Mega Gallade Close Combat vs. 252 HP / 252+ Def Skarmory: 133-157 (39.8 - 47%) -- guaranteed 3HKO after Leftovers recovery

This allows it to check the omnipresent Extreme Killer Arceus as it fails to OHKO even at +4,

+4 252 Atk Life Orb Arceus Extreme Speed vs. 248 HP / 252+ Def Yveltal: 359-422 (78.9 - 92.7%) -- guaranteed 2HKO after Leftovers recovery

And all you have to do is to click Foul Play. BAM, dead Arceus. Instead of Leftovers you can run Rocky Helmet to guarantee the OHKO with Foul Play after Arceus hits it with +2 Extreme Speed. Heres a set:

Yveltal @ Leftovers/Rocky Helmet
Ability: Dark Aura
EVs: 248 HP/252 Def/8 SpDef
Bold/Impish Nature
-Foul Play
-Taunt
-Toxic/Sucker Punch
-Roost

Use Impish if you are running Sucker Punch. Dark Aura Sucker Punch easily OHKOes Mega Mewtwo Y even without any Investment in Attack.

I will give Arceus the Silk Scarf and run the ExtremeKiller set as a pseudo revenge killer and a win-con. That set is notorious and common in Ubers for a reason.

Arceus @ Silk Scarf
Ability: Multitype
EVs: 252 Atk/4 SpDef/252 Spe
Adamant Nature
-Extreme Speed
-Swords Dance
-Earthquake
-Shadow Claw

Xerneas should be running Power Herb if you are going to run a Geomancy set, as Power Herb helps to allow Xerneas to skip the charging turn in Geomancy and instantly obtain its boosts. It will act as the second win-condition in your team. Heres a set,

Xerneas @ Power Herb
Ability: Fairy Aura
EVs: 104 HP/32 Def/252 SpAtk/120 Spe
Modest Nature
-Moonblast
-Thunder/Thunderbolt
-Focus Blast
-Geomancy

I would give Defog to Giratina-Origin in order to provide a way to get rid of Dual Screens and Entry Hazards:

Giratina-Origin @ Griseous Orb
Ability: Levitate
EVs: 180 Atk/252 SpAtk/76 Spe
Rash Nature
-Draco Meteor
-Shadow Sneak/Shadow Force
-Dragon Tail
-Defog

This is a mixed Attacker Giratina set, it can phaze with Dragon Tail while hitting hard with Shadow Force and Draco Meteor, while providing Defog support to the team.

Hope I helped! With the changes, the team will be more balanced in general.

Comments

Defog goes through Screens?

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Yup, Defog clears screens as well.

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You learn something new every day.

Answer 2

A couple of things:
Mew is weak in Ubers. It has no real role, no stats, no typing... you already have a Psychic-type Pokemon, Mewtwo. Your Mew can't even pull its set off well because of its weakness to common Ghost-, Dark- and Bug-type attacks; examples of Pokemon that beat it are Genesect, Aegislash, Gengar-mega, Giratina-Origin, Arceus-Ghost/Dark (lel bug) and more.
You'll want to completely remove it. You may replace it with a defensive Pokemon like Ferrothorn to lay hazards to help with your team sweeping.
Then Yveltal. If this is mixed set, you should really consider running Scarf instead of Specs to patch up the poor speed of the quetzal-wyvern thingy by standards of Ubers. Then, ditch Psychic and Dragon Claw, not like they're adding notable coverage when you have Mewtwo and Xerneas. Get it Foul Play and U-Turn; the former will leave you unwalled of Ho-Oh while the latter is to scout out.
Mewtwo should use Calm Mind imo, it's easily one of the best user of it. Psystrike, Shadow Ball, Fire Blast, Focus Blast and Ice Beam are choices for attack; the five are good imo, always have Psystrike and any 2 of the 4 others as coverage.
Arceus is also a great Calm Mind user, especially for its electric typing. Something like
Arceus-Electric @ Zap Plate
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Calm Mind
- Judgment
- Ice Beam
- Recover

Pretty good late-game sweeper, once your opponent's team has been weakened and they lost their Primal Groudon who stops this set completely.
Xerneas' last 2 moves are waste; FYI, Light Screen and Reflect are left to dedicated Pokemon like Azelf or Rotom-Heat. So just ditch Light Screen and the useless Flash Canon (no notable coverage and weak base power) and get instead Thunderbolt and Hidden Power Fire (for avoiding being walled by the Steel/Bug and Ferrothorn that aren't uncommon in Ubers).
Giratina should seriously consider this set:
Giratina-Origin @ Griseous Orb
Ability: Levitate
EVs: 180 Atk / 252 SpA / 76 Spe
Rash Nature
- Draco Meteor
- Shadow Sneak
- Shadow Ball
- Defog

Defog is utility and will wipe hazards out so you're not disturbed by them. Rest is straightforward, 76 Speed EVs are used for Giratina-O to outrun defensive Yveltal, while also making it faster than uninvested Gliscor and Landorus-T. A minimum of 108 Attack EVs are required in order to guarantee the 2HKO on Mega Mewtwo Y with Shadow Sneak.

It's midnight, I'm grabbing some sleep. I'll detail more tomorrow when I have time.
Hope this helps for the moment :)

Comments

FYI mew is Baton Passer

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lol. I know. But, trust me, this strategy is too gimmicky to actually work.

Answer 3

Mew @ Leftovers
Ability: Synchronize
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
- Baton Pass
- Nasty Plot
- Soft-Boiled
- Knock Off
Soft-Boiled allows recovery and knock off is a nice utility move to have.

Yveltal @ Life Orb
Ability: Dark Aura
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Oblivion Wing
- Psychic
- Dark Pulse
- Roost
Life orb is better because Yveltal isn't very good with specs. Roost allows reliable recovery.
Mewtwo @ Mewtwonite Y
Ability: Pressure
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Psystrike
- Aura Sphere
- Shadow Ball
- Fire Blast
Psystrike allows you to get rid of Xerneas more easily, and does better damage in most situations. Aura Sphere is to kill Darkrai.

Arceus @ Zap Plate
Ability: Multitype
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
- Judgment
- Refresh
- Recover
- Ice Beam
Arceus is a physical tank. Refresh is to avoid toxic stalling, and recover to get back hp.

Xerneas @ Power Herb
Ability: Fairy Aura
EVs: 252 HP / 32 Def / 224 SpA
Modest Nature
- Moonblast
- Geomancy
- Thunder
- Focus Blast
Power Herb makes it easier to get up a Geomancy. 32 Def EV's allows Xerneas to live an Iron Head from Genesect.

Giratina-Origin @ Griseous Orb
Ability: Levitate
EVs: 248 HP / 8 Atk / 252 SpA
Mild Nature
- Shadow Force
- Draco Meteor
- Shadow Ball
- Defog
Defog gets rid of hazards, which can be annoying. Giratina has more bulk so it can continue to use Defog.