XY Ubers First Ubers Team - Mega Gengar + Xerneas

[Temporelucis]

Ohh deer!
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I have been watching enough Youtube videos to know the basic stuff about the Ubers metagame and I want to contribute to the community by posting my first Ubers team.
Since Mega Gengar is being suspect tested I wanted to try it out before I lost the opportunity to use this versatile pokemon in the Ubers scene.​

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Gengar

Item: Gengarite
Ability: Levitate
EVs: 24 Def / 252 SpA / 232 Spe
Timid Nature
IVs: 0 Atk
- Destiny Bond
- Taunt
- Sludge Wave / Shadow Ball
- Focus Blast​

​

Mega Gengar is perhaps the most broken pokemon gamefreak has ever created and I'm gonna take fully advantage of that, in this team Gengar works as a support pokemon since his roll is to trap the opposing Xerneas counters and slowly kill them with Taunt / Destiny Bond / Focus Blast depending on the counter in question.
With a base speed of 130 you're able to out speed common threats such as Shaymin-Sky, Darkrai, Arceus, Mega Lucario and Mega Kangaskhan.
232 EV's in Speed just to be faster than Shaymin-Sky, the only other thing for those extra 24 EV's would be useful is to speed tie with Mewtwo which I doubt you would stay in anyways.

Xerneas

Item: Power Herb
Ability: Fairy Aura
Shiny: Yes
EVs: 208 HP / 252 SpA / 48 Spe
Modest Nature
IVs: 0 Atk / 24 SpD
- Moonblast
- Focus Blast
- Geomancy
- Thunderbolt / Thunder

I need no words to describe how straight up wrong this pokemon is, let the calcs talk by themselves:

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+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 4 SpD Arceus: 390-460 (87.8 - 103.6%) -- guaranteed OHKO after Stealth Rock
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mega Blaziken: 549-646 (182.3 - 214.6%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Darkrai: 998-1176 (355.1 - 418.5%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 0 SpD Deoxys-D: 304-358 (100 - 117.7%) -- guaranteed OHKO (Applies to other Deoxys too)
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 4 SpD Dialga: 457-538 (113.1 - 133.1%) -- guaranteed OHKO
+2 252+ SpA Xerneas Focus Blast vs. 0 HP / 0 SpD Genesect: 302-356 (106.7 - 125.7%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 4 HP / 0 SpD Mega Gengar: 239-282 (91.2 - 107.6%) -- guaranteed OHKO after Stealth Rock
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 252+ SpD Giratina: 582-686 (115.4 - 136.1%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 4 SpD Giratina-O: 914-1076 (181.3 - 213.4%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 0 SpD Groudon: 501-591 (124 - 146.2%) -- guaranteed OHKO
+2 252+ SpA Xerneas Thunderbolt vs. 248 HP / 0 SpD Ho-Oh: 298-352 (71.8 - 84.8%) -- guaranteed OHKO after Stealth Rock
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mega Kangaskhan: 457-538 (130.1 - 153.2%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 4 HP / 0 SpD Kyogre: 343-405 (100.2 - 118.4%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 4 HP / 0 SpD Kyurem-W: 918-1080 (234.1 - 275.5%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mega Lucario: 612-720 (217.7 - 256.2%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 80 SpD Lugia: 297-351 (71.3 - 84.3%) -- 75% chance to OHKO after Stealth Rock
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mewtwo: 499-588 (141.3 - 166.5%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 4 HP / 0 SpD Assault Vest Palkia: 524-618 (162.7 - 191.9%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Rayquaza: 998-1176 (284.3 - 335%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Reshiram: 390-460 (114.3 - 134.8%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Shaymin-S: 577-681 (169.2 - 199.7%) -- guaranteed OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 252 HP / 4 SpD Fairy Aura Xerneas: 465-547 (101.9 - 119.9%) -- guaranteed OHKO
+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 / 0- SpD Zekrom: 1020-1202 (299.1 - 352.4%) -- guaranteed OHKO

24 IV's in Sp.Def just in case Genesect wants to switch in, then you give him a Special Attack Boost instead of the terrible Physical Attack and you're able to live an Iron Head in case is necessary.
48 EV's in Speed to out speed scarfed Genesect. 246*2 > 326*1.5

Arceus

Item: Silk Scarf
Ability: Multitype
EVs: 44 HP / 252 Atk / 212 Spe
Adamant Nature
- ExtremeSpeed
- Swords Dance
- Shadow Claw / Shadow Force / Recover
- Earthquake

E-Killer Arceus it's your plan B in case Xerneas dies or gets weakened before it's able to do anything, you can Swords Dance and then proceed to hurt things really really bad.
212 Speed to be faster than fully invested base 100 just in case you need to get that hit off, the rest goes into HP

Aegislash

Item: Leftovers
Ability: Stance Change
EVs: 252 HP / 100 Atk / 156 SpD
Brave Nature
IVs: 0 Spe
- Gyro Ball
- Shadow Sneak
- King's Shield
- Toxic

All I have learned by the short period of time playing Ubers is "If an Ubers team doesn't have a Xerneas counter, it will be more than likely get swept by it". It works as a bulky pivot, takes hits and beats Xerneas 1v1 (If it isn't the Sub set)
100 EV's in attack to kill Xerneas after it sets up with the combination of Gyro Ball + Shadow Sneak

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100+ Atk Aegislash-Blade Gyro Ball (104 BP) vs. 252 HP / 0 Def Xerneas: 392-464 (85.9 - 101.7%) -- 12.5% chance to OHKO
100+ Atk Aegislash-Blade Shadow Sneak vs. 252 HP / 0 Def Xerneas: 76-91 (16.6 - 19.9%) -- guaranteed 6HKO
16.6% + 85.9% = 102%

Landorus-T

Item: Leftovers
Ability: Intimidate
EVs: 200 HP / 252 Def / 56 SpA
Lax Nature
- Earthquake
- U-turn / Knock Off
- Stealth Rock
- Grass Knot

Basically this set is meant to be a defensive tank that's able to compete with lead Groudon which usually sets up SR first turn, the main idea is to outspeed Groudon and use Grass Knot first turn, then proceed to set up Stealth Rocks / Knock Off something as they switch out scared of the 2HKO.
The EV's are for this:
56 SpA Landorus-T Grass Knot (120 BP) vs. 252 HP / 0 SpD Groudon: 208-246 (51.4 - 60.8%) -- 92.6% chance to 2HKO after Leftovers recovery
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Since Groudon is one of the most reliable ways to deal with E-killer Arceus, weakening this pokemon is vital to get a sweep because without half of it's HP Groudon loses the ability to take a +2 Extreme Speed and your Arceus is able to sweep the rest of the team.
+2 252+ Atk Silk Scarf Arceus Extreme Speed vs. 252 HP / 252+ Def Groudon: 186-219 (46 - 54.2%)

Examples:

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Situation 1:
http://replay.pokemonshowdown.com/ubers-147510634
Situation 2:
http://replay.pokemonshowdown.com/ubers-147511553
Situation 3:
http://replay.pokemonshowdown.com/ubers-147512321

Kyogre

Item: Choice Scarf
Ability: Drizzle
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Water Spout
- Surf
- Ice Beam
- Thunder

This is the scarfer of the team, usually works as an offensive lead carrying a lot of power with those rain boosted Water Spouts putting offensive pressure on the opponent side of the field, it also helps Aegislash by reducing the power of all the Fire Type attacks that usually threatens him.

Problems:
- The only Kyogre switch that this team has is Kyogre itself.
- It has no defoger / spinner.
- It has no Status Absorber nor a Cleric.

What do you guys think?:]​

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Importable Format:

Hide

Gengar @ Gengarite
Ability: Levitate
EVs: 24 Def / 252 SpA / 232 Spe
Timid Nature
IVs: 0 Atk
- Destiny Bond
- Taunt
- Sludge Wave / Shadow Ball
- Focus Blast

Xerneas @ Power Herb
Ability: Fairy Aura
Shiny: Yes
EVs: 208 HP / 252 SpA / 48 Spe
Modest Nature
IVs: 0 Atk / 24 SpD
- Moonblast
- Focus Blast
- Geomancy
- Thunderbolt

Arceus @ Silk Scarf
Ability: Multitype
EVs: 44 HP / 252 Atk / 212 Spe
Adamant Nature
- ExtremeSpeed
- Swords Dance
- Shadow Claw / Shadow Force / Recover
- Earthquake

Aegislash @ Leftovers
Ability: Stance Change
EVs: 252 HP / 100 Atk / 156 SpD
Brave Nature
IVs: 0 Spe
- Gyro Ball
- Shadow Sneak
- King's Shield
- Toxic

Landorus-Therian (M) @ Leftovers
Ability: Intimidate
EVs: 200 HP / 252 Def / 56 SpA
Lax Nature
- Earthquake
- U-turn / Knock Off
- Stealth Rock
- Grass Knot

Kyogre @ Choice Scarf
Ability: Drizzle
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Water Spout
- Surf
- Ice Beam
- Thunder

​

 

[Vinc608]

You should use this spread for Xerneas : 104 HP / 32 Def / 252 SpA / 120 Spe.
32 Def just in case Genesect wants to switch in, then you give him a Special Attack Boost instead of the terrible Physical Attack and you're able to live an Iron Head in case is necessary.
120 Spe to outspeed Mewtwo if Sticky Web is up.

 

[Level 56]

Hello there, your team is built well but there are some changes In evs and sets to be made so I'll tell you what to change to make your team even better.

Firstly, don't use defense evs on mega-gengar becasue of the low defences of gengar, 24 defense evs won't make a difference in its defence. Always use these evs on gengar 252 sp atk and 252 speed with timid nature. I saw that you have written in gengar's moveset

Shadow ball/sludge wave

Sludge wave is gengar's most useful and strongest STAB move and since gengar usually comes in to trap bulky mons like fairyceus and grassceus, thats why sludge wave is a must move on gengar.

You can use either focus blast/shadow ball or hp fire (hp fire is used for killing scizor) as your second attacking move along with taunt and dbond.

Secondly, xerneas' s evs needs a little changing, use 104 hp, 32 def, 252 sp atk and 120 speed with modest nature. with 32 defense evs, when genesect comes in vs xern, it will raise its sp atk instead of atk which gives xerneas a great chance to set up in front of genesect. With 120 speed xerneas (in sticky web) outspeeds mewtwo after geomancy. If you talk about moveset for geo xerneas, use thunder instead of tbolt, thunder has 70% accuracy but its super strong, where as tbolt is weak.

Your arceus also need some changes,

There are two choices, one is if you want to use recover ekiller, second is if you want to go with shadow claw instead of recover, in each case you need different evs.

For arceus with recover, it doesn't need much speed, it needs hp evs, in this case I suggest you use 212 hp and 44 speed with adamant nature. With these hp evs arceus can make a lot of foe's moves from 2hko Into a 3hko.

For arceus without recover, standard evs are 252 atk and 252 speed with jolly nature with life orb. jolly nature is used for gengar because without jolly gengar can outspeed arceus and can take it down with it using dbond, of course its not necassary that it will take arceus down with it every time they face each other but its always safe to not get involved in 50/50s, hence this is why jolly arceus with life orb is the best arceus to use.

Thirdly, grass knot on lando makes no sense, don can't do much to lando thanks to lando's flying type which resists groudon's STAB, so my suggestion, change your evs to 200 hp, 252 def and 56 atk with impish nature. Your team is jolly ekiller weak (a little bit) because landorus is not an ekiller check and jolly ekiller is faster than gengar (normal form). Lando can take a 1+ hit from arceus but earthquake won't do much In return, In this case use superpower instead of grass knot, superpower will help you deal with arceus a lot better. as far as the last move is concerned, u-turn > knock off, u-turn gives momentum to offensive teams.

Lastly, change kyogre's nature to modest, on a scarf pokemon you need power instead of too much speed. Also attack evs aren't required on aegislash as gyro ball depends on the speed of your foe (xerneas) and shadow sneak is for killing pokemon with low hp. use 252 hp with max sp def.

Make these changes and tell me if you are facing any problem after these changes because now your team is good to go.

Good luck!

 

[Edgar]

Hey fren, nice team you got there. Following Level 56's rough suggestions, I personally think there's still one thing you can change about the team without having to completely change the structure of the team (aside of what Level 56 mentioned) so you can have an easier time checking major threats to your team like Kyogre, Calm Mind Arceus and Palkia.

First suggestion I'd like to make is Specially Defensive Kyogre over Choice Scarf. Although you said Kyogre was a nice lead and your revenge killer, Specially Defensive Kyogre can still be used as a lead against a lot of team archetypes and you have a lot of revenge killing power on your team in the form Extremekiller Arceus, Mega Gengar. I think this team doesn't need a Choice Scarf user, from what I can appreciate anyways. Now talking about Specially Defensive Kyogre. I feel like it would check a large number of big threats to your team like, opposing Kyogre, Calm Mind Arceus and Palkia. On top of that, Specially Defensive Kyogre still keeps some offensive pressure thanks to its massive Sp.Atk (even if uninvested). For the EVs, use the following: 248 HP / 252 SpD / 8 Spe with a Calm nature gives you massive bulk and also lets you speed creep some pokemon like Max HP Ho-Oh and Groudon. As for moves, Scald is a strong, rain boosted move that can also leave burns in the opponent's pokemon, helps with common switch-ins like Ferrothorn and Palkia. Roar helps you phaze pokemon like Calm Mind Arceus. Rest is a common recovery move that this type of Kyogre appreciates having as it lets it get back all the lost HP and also allows him to absorb status. Sleep Talk allows you to attack while you're asleep so you don't give your opponent 2 free turns.

Kyogre set

Kyogre @ Leftovers
Ability: Drizzle
Shiny: Yes
EVs: 248 HP / 252 SpD / 8 Spe
Calm Nature
- Scald
- Roar
- Rest
- Sleep Talk

Good Luck! :]

 

[ApplepieFTW]

Heya man, is this really your first team? You did very well if it is ^-^

There is some stuff that needs to be fixed though. You have the very solid core that is mgar/ekiller/xern, this is a fantastic basis for any offensive team. The first problem I see is aegislash. Your team is clearly offensive, and aegislash kills momentum, and is a very defensive mon that doesn't fulfil a lot of roles, I think you should change it to a banded scizor, bandzor can effectively revenge xerneas, but it will also be able to check extreme killer arceus that lacks a fire move. I know you already have landorus, but landorus is a bad way to deal with ekiller, using landorus to deal with ekiller and having no other checks is not enough. Scizor will be you main check to ekiller. Scizor also doesnt kill momentum, as it has u-turn.

Next is landorus, because you now have a second answer to ekiller, landorus can be more offensive (offensive lando is arguably always better). This set loses less momentum, still sets rocks, and is also a good physical hitter.

You also mentioned how kyogre is a big threat to your team, this is true. When your kyogre gets weakened a bit, you are almost guaranteed to get swept by a scarf kyogre, and specs kyogre will always get a free kill. For this reason, you should change kyogre to lustrous orb palkia.

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Optimization:

Gengar: use max speed timid, you want to be able to speed tie with other mgars and mewtwo's, the extra bulk in defense isnt worth not being able to do these things. what you however should do is run more bulk in special defense and take some ev's out of your special attack, gengar is more an utility mon as opposed to a sweeper and these ev's will let you always live a +2 xerneas moonblast, so its another failsafe.
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mega Gengar: 238-281 (91.1 - 107.6%) -- 50% chance to OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 36 SpD Mega Gengar: 230-271 (88.1 - 103.8%) -- 25% chance to OHKO
This doubles the chance to live the hit, 76 ev's will always live the hit. I gave it sludge bomb to kill blissey easier, 30% poison is better than 5 BP more imo
Xerneas: should run this spread modest 252 sp atk/104 hp/28 def/124 spd, as mentioned above: this gives genesect the attack boost (you had 24 spdef iv's before, this is unnecessary), outspeeds mm2y on webs (124>120, see hp fire), and gives you an odd hp number to reduce passive damage. you should also use hidden power fire>focus blast, this hits more important targets (mainly scizor), heatran is not at all a problem to your team. thunder hits kyogre harder (tbolt does less than moonblast) and also hits ho-oh harder. this is imo the best set when not running sub, but double u-turn (lando, scizor)+mgar will be able to break stall already
Arceus: should run 252 atk/252 spd/4 phys def (to not give gene the attack boost) with a jolly nature with the moves swords dance/extreme speed/shadow claw/earthquake with life orb as an item
(on landorus, these ev's outspeed neutral nature base 90's (most notably specs kyogre), and maintain decent bulk, maximize attack and give you odd hp)

I included the improved version of your team (because you left and importable which makes it easy to do this), how convenient ^-^

Gengar @ Gengarite
Ability: Levitate
EVs: 220 SpA / 36 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Destiny Bond
- Taunt
- Shadow Ball
- Sludge Bomb

Xerneas @ Power Herb
Ability: Fairy Aura
Shiny: Yes
EVs: 104 HP / 28 Def / 252 SpA / 116 Spe
Modest Nature
- Moonblast
- Thunder
- Moonblast
- Hidden Power [Fire]

Arceus @ Life Orb
Ability: Multitype
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Swords Dance
- Shadow Claw
- ExtremeSpeed
- Earthquake

Scizor @ Choice Band
Ability: Technician
EVs: 248 HP / 252 Atk / 8 Def
Adamant Nature
- Bullet Punch
- U-turn
- Superpower
- Knock Off

Landorus-Therian (M) @ Earth Plate
Ability: Intimidate
EVs: 104 HP / 252 Atk / 4 Def / 148 Spe
Jolly Nature
- Earthquake
- Stone Edge
- U-turn
- Stealth Rock

Palkia @ Lustrous Orb
Ability: Pressure
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hydro Pump
- Spacial Rend
- Fire Blast
- Thunder Wave

Convo with our main man edgar on why knock off>pursuit:

Hide

[16:12] ApplepieFTW: are you here?
[16:12] edgar: yes
[16:12] ApplepieFTW: o haia
[16:12] edgar: hi
[16:12] edgar: :]
[16:13] ApplepieFTW: :}
[16:13] ApplepieFTW: *:]
[16:13] ApplepieFTW: what do you think is better on bandzor, pursuit or knock off?
[16:15] edgar: what do you have?
[16:15] edgar: gyro eq explosion
[16:15] edgar: ?
[16:16] ApplepieFTW: huh?
[16:16] ApplepieFTW: on banded scizor?
[16:16] edgar: o
[16:16] edgar: I read
[16:16] edgar: bronzong
[16:16] edgar: lol
[16:16] edgar: o
[16:16] ApplepieFTW: o lol
[16:16] edgar: err
[16:16] edgar: knock off works in most of situations
[16:17] edgar: and it's more punishing than pursuit
[16:17] edgar: the only move gar come in on is superpower
[16:17] edgar: asuming u have that
[16:17] ApplepieFTW: yh
[16:18] ApplepieFTW: well the problem is
[16:18] ApplepieFTW: any good player
[16:18] ApplepieFTW: will always dbond
[16:18] ApplepieFTW: or usually
[16:18] ApplepieFTW: bc the teams has a gengar on it
[16:18] ApplepieFTW: so its s 50/50 between dark move and u-turn
[16:18] ApplepieFTW: both pursuit and knock off kill it when it stays in
[16:19] ApplepieFTW: but knock off has more over-all
[16:19] ApplepieFTW: utility
[16:19] ApplepieFTW: but pursiut will kill it if it switches
[16:19] ApplepieFTW: which is unlikely, but is that worth the added value knock off gives?
[16:20] edgar: Idk
[16:20] edgar: you can also U turn on the switch lol
[16:20] edgar: and gain momentum yourself
[16:20] ApplepieFTW: yh fair enough
[16:21] ApplepieFTW: o wait the calc is wrong
[16:21] ApplepieFTW: it pursuit should deal ~40 of kncok off
[16:21] ApplepieFTW: it calculates when switching, hm I guess
[16:21] ApplepieFTW: you're forced to u-turn either way
[16:21] ApplepieFTW: so you will never stay in on gar
[16:21] ApplepieFTW: thus knock off is better
[16:21] ApplepieFTW: ty :]
[16:22] edgar: np :]
[16:30] ApplepieFTW: mind if I use this to illustrate why knock off>pursuit for the rate I'm using this for?
[16:32] edgar: sure np

Speaking of edgar, spef ogre>palk (scarforge currently) is also a good change. Also fits nice with the rest of my changes imo (so doesnt phys def cm ogre btw).


Hope this helped, gl with the team!

 

[Level 56]

Heya man, is this really your first team? You did very well if it is ^-^

There is some stuff that needs to be fixed though. You have the very solid core that is mgar/ekiller/xern, this is a fantastic basis for any offensive team. The first problem I see is aegislash. Your team is clearly offensive, and aegislash kills momentum, and is a very defensive mon that doesn't fulfil a lot of roles, I think you should change it to a banded scizor, bandzor can effectively revenge xerneas, but it will also be able to check extreme killer arceus that lacks a fire move. I know you already have landorus, but landorus is a bad way to deal with ekiller, using landorus to deal with ekiller and having no other checks is not enough. Scizor will be you main check to ekiller. Scizor also doesnt kill momentum, as it has u-turn.

Next is landorus, because you now have a second answer to ekiller, landorus can be more offensive (offensive lando is arguably always better). This set loses less momentum, still sets rocks, and is also a good physical hitter.

You also mentioned how kyogre is a big threat to your team, this is true. When your kyogre gets weakened a bit, you are almost guaranteed to get swept by a scarf kyogre, and specs kyogre will always get a free kill. For this reason, you should change kyogre to lustrous orb palkia.

------------------------------------------------------------------------------------------------------------------------------------------------------------

Optimization:

Gengar: use max speed timid, you want to be able to speed tie with other mgars and mewtwo's, the extra bulk in defense isnt worth not being able to do these things. what you however should do is run more bulk in special defense and take some ev's out of your special attack, gengar is more an utility mon as opposed to a sweeper and these ev's will let you always live a +2 xerneas moonblast, so its another failsafe.
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 4 SpD Mega Gengar: 238-281 (91.1 - 107.6%) -- 50% chance to OHKO
+2 252+ SpA Fairy Aura Xerneas Moonblast vs. 0 HP / 36 SpD Mega Gengar: 230-271 (88.1 - 103.8%) -- 25% chance to OHKO
This doubles the chance to live the hit, 76 ev's will always live the hit. I gave it sludge bomb to kill blissey easier, 30% poison is better than 5 BP more imo
Xerneas: should run this spread modest 252 sp atk/104 hp/28 def/124 spd, as mentioned above: this gives genesect the attack boost (you had 24 spdef iv's before, this is unnecessary), outspeeds mm2y on webs (124>120, see hp fire), and gives you an odd hp number to reduce passive damage. you should also use hidden power fire>focus blast, this hits more important targets (mainly scizor), heatran is not at all a problem to your team. thunder hits kyogre harder (tbolt does less than moonblast) and also hits ho-oh harder. this is imo the best set when not running sub, but double u-turn (lando, scizor)+mgar will be able to break stall already
Arceus: should run 252 atk/252 spd/4 phys def (to not give gene the attack boost) with a jolly nature with the moves swords dance/extreme speed/shadow claw/earthquake with life orb as an item
(on landorus, these ev's outspeed neutral nature base 90's (most notably specs kyogre), and maintain decent bulk, maximize attack and give you odd hp)

I included the improved version of your team (because you left and importable which makes it easy to do this), how convenient ^-^



Convo with out main man edgar on why knock off>pursuit:

Hide

[16:12] ApplepieFTW: are you here?
[16:12] edgar: yes
[16:12] ApplepieFTW: o haia
[16:12] edgar: hi
[16:12] edgar: :]
[16:13] ApplepieFTW: :}
[16:13] ApplepieFTW: *:]
[16:13] ApplepieFTW: what do you think is better on bandzor, pursuit or knock off?
[16:15] edgar: what do you have?
[16:15] edgar: gyro eq explosion
[16:15] edgar: ?
[16:16] ApplepieFTW: huh?
[16:16] ApplepieFTW: on banded scizor?
[16:16] edgar: o
[16:16] edgar: I read
[16:16] edgar: bronzong
[16:16] edgar: lol
[16:16] edgar: o
[16:16] ApplepieFTW: o lol
[16:16] edgar: err
[16:16] edgar: knock off works in most of situations
[16:17] edgar: and it's more punishing than pursuit
[16:17] edgar: the only move gar come in on is superpower
[16:17] edgar: asuming u have that
[16:17] ApplepieFTW: yh
[16:18] ApplepieFTW: well the problem is
[16:18] ApplepieFTW: any good player
[16:18] ApplepieFTW: will always dbond
[16:18] ApplepieFTW: or usually
[16:18] ApplepieFTW: bc the teams has a gengar on it
[16:18] ApplepieFTW: so its s 50/50 between dark move and u-turn
[16:18] ApplepieFTW: both pursuit and knock off kill it when it stays in
[16:19] ApplepieFTW: but knock off has more over-all
[16:19] ApplepieFTW: utility
[16:19] ApplepieFTW: but pursiut will kill it if it switches
[16:19] ApplepieFTW: which is unlikely, but is that worth the added value knock off gives?
[16:20] edgar: Idk
[16:20] edgar: you can also U turn on the switch lol
[16:20] edgar: and gain momentum yourself
[16:20] ApplepieFTW: yh fair enough
[16:21] ApplepieFTW: o wait the calc is wrong
[16:21] ApplepieFTW: it pursuit should deal ~40 of kncok off
[16:21] ApplepieFTW: it calculates when switching, hm I guess
[16:21] ApplepieFTW: you're forced to u-turn either way
[16:21] ApplepieFTW: so you will never stay in on gar
[16:21] ApplepieFTW: thus knock off is better
[16:21] ApplepieFTW: ty :]
[16:22] edgar: np :]
[16:30] ApplepieFTW: mind if I use this to illustrate why knock off>pursuit for the rate I'm using this for?
[16:32] edgar: sure np

Speaking of edgar, spef ogre>palk (scarforge currently) is also a good change. Also fits nice with the rest of my changes imo (so doesnt phys def cm ogre btw).


Hope this helped, gl with the team!

What applepie said also makes your team decent but as edgar suggested you to use resttalk kyogre because your team is a little palkia weak, I think its better to use the version I told you at least with resttalk kyogre because on an offense team resttalk kyogre lowers the momentum of the team very badly. In my opinion, make two versions of this team. One team with my suggestions and one with applepie's suggestions. This wil help you a lot.

 

[Edgar]

Oh you meant that team well, I thought of suggesting Banded Scizor as well but the reason I actually didn't is because Aegislash just helps a bit more than Scizor actually does (from what I see) as he would be removing a waaaaaay more reliable Xerneas check and revenge killer for Mewtwo, as well as something that could Toxic Defog/Calm Mind Arceus formes.

 

[ApplepieFTW]

Oh you meant that team well, I thought of suggesting Banded Scizor as well but the reason I actually didn't is because Aegislash just helps a bit more than Scizor actually does (from what I see) as he would be removing a waaaaaay more reliable Xerneas check and revenge killer for Mewtwo, as well as something that could Toxic Defog/Calm Mind Arceus formes.

Hmm, revenge mewtwo, that's a good point actually,, Idk, if you'd keep aegis then use spdef ogre imo, otherwise use my changes.