Project Threats to OU Cores v2: Round 72: Mega Charizard X + Ash-Greninja

[wadusher]

Mega Gyarados

Gyarados-Mega @ Gyaradosite
Ability: Intimidate
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Dragon Dance
- Crunch / Waterfall
- Taunt / Substitute
- Earthquake

This thing has all the tools it needs to be the bane of stall's existence, with access to mold breaker taunt and enough damage output to brute force its way through almost anything, provided the fat grasses that chansey and sableye are sometimes paired with are chipped down, gone, or not even there to begin with.

I think I'll let the calcs speak for themselves. They're at +2 because Gyarados has no issues dragon dancing as many times as it pleases against a team like this.

+2 252 Atk Mold Breaker Gyarados-Mega Crunch vs. 244 HP / 252+ Def Eviolite Chansey: 394-465 (56.1 - 66.2%) -- guaranteed 2HKO
+2 252 Atk Mold Breaker Gyarados-Mega Crunch vs. 252 HP / 252+ Def Eviolite Chansey: 394-465 (55.9 - 66%) -- guaranteed 2HKO
-1 Atk Sableye-Mega Knock Off vs. 0 HP / 0 Def Gyarados-Mega: 29-34 (5.7 - 6.9%) -- possibly the worst move ever

 

[aogalicia]

reserving M Pinsir

Pinsir-Mega @ Pinsirite
Ability: Mold Breaker
- Swords Dance
- Facade
- Quick Attack
- Stealth Rock / Earthquake

This set is able to handle stall on it’s own. You lead Pinsir, get rocks up pre mega so it bypasses Mega Sableye. SD in its face while you get burned and pretty much deal massive damage on anything that comes in on it. Pretty much everything gets 2HKO / OHKO after rocks.​

 

[Jucherz]

Mega Lopunny

Lopunny-Mega @ Lopunnite
Ability: Limber
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- High Jump Kick
- Return
- Power-Up Punch
- Encore

Both Pokemon in this core get obliterated by HJK, simple as that. Lopunny has to be careful to not HJK on Sableye's Protect or switch in on a wisp though. But if you predict the protect you can Encore Sableye on the next turn and set up with PUP.

 

[Mellow]

Reserving Tapu Lele

Tapu Lele @ Psychium Z
Ability: Psychic Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Psyshock
- Moonblast
- Calm Mind
- Hidden Power Fire / Focus Blast

Any set works really, as long as it has Psyshock, but I'd opt for a Z set so you don't have the 50/50 of Moonblast vs Psyshock with a Choice set. Mega Sableye falls over to a +1 Moonblast and Chansey is 2HKOd by +1 Psyshock.

fuck stall

+1 252 SpA Tapu Lele Moonblast vs. 248 HP / 252+ SpD Sableye-Mega: 306-360 (100.9 - 118.8%) -- guaranteed OHKO
+1 252 SpA Tapu Lele Psyshock vs. 244 HP / 252+ Def Eviolite Chansey in Psychic Terrain: 390-460 (55.5 - 65.5%) -- guaranteed 2HKO

 

[MultiAmmiratore]

Reserving hoopa-u

Hoopa-Unbound @ Fightinium Z
Ability: Magician
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Focus Blast
- Dark Pulse
- Psyshock / Psychic
np hoopa-u can setup a couple of nasty plots vs both mons and proceed to break them
0 Atk Sableye-Mega Knock Off vs. 0 HP / 0 Def Hoopa-Unbound: 93-111 (30.8 - 36.8%) -- 69.3% chance to 3HKO
+4 252 SpA Hoopa-Unbound Dark Pulse vs. 248 HP / 252+ SpD Sableye-Mega: 313-370 (103.3 - 122.1%) -- guaranteed OHKO
+2 252 SpA Hoopa-Unbound All-Out Pummeling (190 BP) vs. 244 HP / 12 SpD Eviolite Chansey: 640-754 (91.1 - 107.4%) -- 43.8% chance to OHKO
Chansey Seismic Toss vs. 0 HP Hoopa-Unbound: 100-100 (33.2 - 33.2%) -- guaranteed 4HKO

 

[stuuful12]

Reserving Swords Dance Kartana

Kartana @ Grassium Z
Ability: Beast Boost
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Swords Dance
- Leaf Blade
- Sacred Sword
- Defog

Swords Dance Kartana is arguably one of the best counters to this core in that it generally destroys most of the foundation that stall lives on, especially if the Unaware mon is Quagsire. You can approach the use of Kartana against this core and stall in general in two ways. You can either lead with Kartana, and either nuke the Mega Sableye with Grassium or Swords Dance on a predicted protect. The safer approach is to use Chansey as set-up fodder and conserve the Grassium for the Unaware user. In the end, it doesn't matter because Kartana claims the lives of both these pokemons thanks to its stellar attack stat and fighting coverage.

RIP Stall 2018

252 Atk Kartana Bloom Doom (175 BP) vs. 248 HP / 8 Def Sableye-Mega: 301-355 (99.3 - 117.1%) -- 93.8% chance to OHKO
+2 252 Atk Kartana Leaf Blade vs. 248 HP / 8 Def Sableye-Mega: 310-366 (102.3 - 120.7%) -- guaranteed OHKO
+2 252 Atk Kartana Sacred Sword vs. 244 HP / 252+ Def Eviolite Chansey: 668-786 (95.1 - 111.9%) -- 68.8% chance to OHKO

 

[Chessking345]

Reserving +6 Azumarill

 

[Moldes]

Mamoswine

Mamoswine @ Groundium Z
Ability: Thick Fat
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Earthquake
- Icicle Crash
- Knock Off
- Substitute

Mamo sets up a Sub in front of Sab (much more easier if they both lead) that a single Knock can't hope to break and then bops it with a Tectonic Rage, dealing quite a lot of damage. Chansey is not really a problem for it to handle either, as EQ immediately becomes a dangerous move to use against her after knocking off her Eviolite. Sub Z Mamo can put a dent on many other mons that cares not about its presence on the field, like Ferro and Clef. Also, having a powerful nuke in Z EQ will give a headache to anything that's not grounded or possess a resistance against it (and even if they do resist, they'll have to answer to a Crash more often than not).

Calcs

252+ Atk Mamoswine Tectonic Rage (180 BP) vs. 248 HP / 8 Def Sableye-Mega: 264-312 (87.1 - 102.9%) -- 18.8% chance to OHKO
252+ Atk Mamoswine Earthquake vs. 244 HP / 252+ Def Chansey: 357-420 (50.8 - 59.8%) -- guaranteed 2HKO

 

[robofiend]

Reserving Tapu Lele

Tapu Lele @ Psychium Z
Ability: Psychic Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Psyshock
- Moonblast
- Calm Mind
- Hidden Power Fire / Focus Blast

Any set works really, as long as it has Psyshock, but I'd opt for a Z set so you don't have the 50/50 of Moonblast vs Psyshock with a Choice set. Mega Sableye falls over to a +1 Moonblast and Chansey is 2HKOd by +1 Psyshock.

fuck stall

+1 252 SpA Tapu Lele Moonblast vs. 248 HP / 252+ SpD Sableye-Mega: 306-360 (100.9 - 118.8%) -- guaranteed OHKO
+1 252 SpA Tapu Lele Psyshock vs. 244 HP / 252+ Def Eviolite Chansey in Psychic Terrain: 390-460 (55.5 - 65.5%) -- guaranteed 2HKO

This set gets a shoutout for being able to nuke Quags/Clefable, they are natural counters to CM Lele with Psyshock and common on Stall teams, and both bank on Lele running Fightinium-Z instead of Psychium-Z:

252 SpA Tapu Lele Shattered Psyche (160 BP) vs. 252 HP / 4 SpD Clefable in Psychic Terrain: 427-504 (108.3 - 127.9%) -- guaranteed OHKO after Leftovers recovery
252 SpA Tapu Lele Shattered Psyche (160 BP) vs. 252 HP / 4 SpD Quagsire in Psychic Terrain: 553-652 (140.3 - 165.4%) -- guaranteed OHKO after Leftovers recovery

 

[MaximizeSayian]

Mega Charizard X

Charizard @ Charizardite X
Ability: Blaze
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Dragon Dance
- Dragon Claw
- Flare Blitz
- Earthquake

Hey everyone! Zard X is a one of three physical wall breakers that can not be burned and has access to the one of the greatest sweeper moves: Dragon Dance.
+2 Flare Blitz can OHKO both Chansey and M-Sableye easily!!

calcs on calcs on calcs on calcs on calcs

+2 252 Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 248 HP / 8 Def Sableye-Mega: 417-492 (137.6 - 162.3%) -- guaranteed OHKO

+2 252 Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 244 HP / 252+ Def Eviolite Chansey: 675-795 (96.1 - 113.2%) -- 75% chance to OHKO

A huge problem is Stealth Rocks which take out 50% of health prior to mega evolving, a good amount of health that gets eaten by the recoil of Flare Blitz. In addition, this set doesn't have access to Roost which leaves Zard X no recovery options and the chance of being whittled down by Chansey via Toxic/Seismic Toss/Soft-Boiled.

 

[Astoria]

Mega-Diancie @ Diancite
Ability: Clear Body
EVs: 4 Atk / 252 SpA / 252 Spe
Naive Nature
- Substitute
- Endeavor
- Moonblast
- Diamond Storm

Mega-Diancie is probably the best counter to MSab. Sub + Endeavor lets Diancie break Chansey easily. Set is pretty common.

 

[Steel With It]

Volcarona @ Buginium Z
Ability: Swarm
EVs: 252 SpA / 252 Spe / 4 SpD
Timid Nature
- Bug Buzz
- Fire Blast
- Substitute
- Quiver Dance

Volcarona laughs at support MSab without Toxic, as it's immune to WoW and can't lose its Crystal to Knock Off, but is hard-walled by Chansey... Unless it's running SubSwarm. This set turns the tables on the matchup, reliably luring in, setting up on and nuking the pink prick. As a bonus, it also beats bulky Grasses, Skarmory, Quagsire, PhysDef Unaware Clefable (SpDef stalls it out but I think I'm the only person who runs that) and even Toxapex.

Calcs

+3 252 SpA Swarm Volcarona Bug Buzz vs. 244 HP / 12 SpD Eviolite Chansey: 358-423 (50.9 - 60.2%) -- guaranteed 2HKO
+3 252 SpA Swarm Volcarona Savage Spin-Out (175 BP) vs. 244 HP / 12 SpD Eviolite Chansey: 696-820 (99.1 - 116.8%) -- guaranteed OHKO after Stealth Rock

+3 252 SpA Swarm Volcarona Bug Buzz vs. 248 HP / 252+ SpD Sableye-Mega: 370-436 (122.1 - 143.8%) -- guaranteed OHKO

 

[Flame from Heaven]

Hide

Altervisi: Draw your last pathetic meme so I can end you, Flame from Heaven.
Flame from Heaven: My meme stash has no pathetic memes, Altervisi, but it does contain the unstoppable

Exodia (Venomoth) @ Buginium Z
Ability: Tinted Lens
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Sleep Powder
- Bug Buzz
- Roost
- Quiver Dance
A: Impossible! Nobody’s ever been able to summon him!
F: I assembled all six Quiver Dances! All of the six pieces of the puzzle!
Exodia, Obliterate!
+6 252+ SpA Venomoth Savage Spin-Out (175 BP) vs. 244 HP / 12 SpD Eviolite Chansey: 616-726 (87.7 - 103.4%) -- guaranteed OHKO after Stealth Rock

 

[Altervisi]

Last Week Analysis

Highlights
Tapu Lele - One of the few special attackers that can really break Chansey, burn is not a worry and a boosted Shattered Psyche is nuking anything that isn’t a Dark-type. Not being choice-locked is great too. mellowyellowhd
Mega-Mawile - While the 4 attacks set does have to be very careful to avoid burns, outside of this there is very little this core and stall in general can do to stop Mawile Flame from Heaven
Creative
Mega-Diance - Sub+Endeavour has been around for a while now, nevertheless it is a really cool way to break walls that the AoA set often struggles with Astoria
Keldeo - While this mon is falling off in viability a bit I personally think this set is very underrated as it beats a lot of common answers and instead makes them setup fodder. PrideMustang
Not Archived
Venomoth - H-how could I be defeated… Flame from Heaven

Week 7 Core - Zygarde + Mega-Scizor

This core features Choice Band Zygarde and Swords Dance Mega-Scizor to form a strong wallbreaker + sweeper core. A lot of the answers that Scizor invites in, particularly Fire and Steel-types, can be pivoted out of using U-Turn, which invites Zygarde to fire off a very powerful Thousand Arrows, which hits a huge amount of the tier for great damage, thanks to its ability to tackle non-grounded targets and not have its damage weakened by Grassy Terrain. Zygarde appreciates the damage Scizor can do to checks like bulky Grass-types with a +2 U-Turn and Scizors great bulk allows it to check a number of Ice, Fairy and Dragon types for Zygarde. This core also boasts dual priority, which means both members could be potential late game cleaners, once the relevant threats are removed/weakened.

Sets

Zygarde @ Choice Band
Ability: Aura Break
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Thousand Arrows
- Extreme Speed
- Outrage
- Toxic

Scizor @ Scizorite
Ability: Light Metal
EVs: 248 HP / 64 Atk / 124 Def / 16 SpD / 56 Spe
Adamant Nature
- Swords Dance
- Bullet Punch
- U-Turn
- Roost

As always, all postings are appreciated! But please, only post OU viable Pokémon and do not post sets specifically catered to this core, your threat should not be complete deadweight against teams that do not feature Zygzor.

At the end of the week I will archive viable threats, post a new core and highlight threats that are particularly creative or effective! I'll also try and explain why I didn't include any threats in the archive, if applicable.

​

 

[nubzie]

mega medicham coz hjk

Medicham @ Medichamite
Ability: Telepathy
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
- Fake Out
- High Jump Kick
- Ice Punch
- Zen Headbutt

well scizor teams usually have stuff like heatran/ferrothorn aside from these 2 members & medicham teams usually have ways to pivot medicham in safely vs. stuff like tran & ferro. once it's in, hjk 2hkos scizor bullet punch doesn't 2hko w/o an sd and zygarde has the potential of getting nuked by ice punch even tho hjk can take it out 2 if its slightly weakened.

 

[Felixx]

Tapu Lele @ Psychium Z
Ability: Psychic Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psyshock
- Moonblast
- Hidden Power [Fire]
- Calm Mind

The idea is simple, click Moonblast against Zygarde, then if they go to M-Scizor, click HP Fire to knock it out after the Moonblast chip. You can even click CM if you predict the Zygarde to switch out and ease prediction against Dark-Types, or if you predict it to stay in hoping to live Moonblast, click Z-Psyshock to guaranteed OHKO it. Another cool factor is that Lele's terrain blocks priority from both members of the core, meaning Lele could beat down the core without worrying about chip damage putting it in range of Espeed or getting knocked out by BP.

Calcs

252 SpA Tapu Lele Shattered Psyche (160 BP) vs. 4 HP / 0 SpD Zygarde in Psychic Terrain: 409-483 (114.2 - 134.9%) -- guaranteed OHKO

252 SpA Tapu Lele Moonblast vs. 4 HP / 0 SpD Zygarde: 324-384 (90.5 - 107.2%) -- 43.8% chance to OHKO

252 SpA Tapu Lele Hidden Power Fire vs. 248 HP / 8 SpD Scizor-Mega: 264-312 (76.9 - 90.9%) -- guaranteed 2HKO

 

[Flame from Heaven]

Charizard X

Charizard-Mega-X @ Charizardite X
Ability: Tough Claws
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Flare Blitz
- Dragon Claw
- Earthquake
- Roost
Charizard X OHKOs both members of this core wth it’s stab attacks and finds switchin opportunities with Mega Scizor.

 

[MultiAmmiratore]

Reserving sd mega scizor with knock off,
Btw u-turn isn't much used on sd mscizor, at least put knock off as first slash 3:

Scizor @ Scizorite
Ability: Light Metal
EVs: 248 HP / 64 Atk / 124 Def / 16 SpD / 56 Spe
Adamant Nature
- Swords Dance
- Bullet Punch
- Knock Off
- Roost
sd msizor uses both as setup fodder and wins the 1v1 vs u-turn> knock off sd scizor

+6 64+ Atk Technician Scizor-Mega Bullet Punch vs. 248 HP / 124 Def Scizor-Mega: 144-169 (41.9 - 49.2%) -- guaranteed 3HKO
+6 64+ Atk Scizor-Mega Knock Off vs. 248 HP / 124 Def Scizor-Mega: 208-245 (60.6 - 71.4%) -- guaranteed 2HKO
(koff + bullet punch kills)


+6 64+ Atk Technician Scizor-Mega Bullet Punch vs. 248 HP / 124 Def Scizor-Mega: 144-169 (41.9 - 49.2%) -- guaranteed 3HKO
+6 64+ Atk Scizor-Mega U-turn vs. 248 HP / 124 Def Scizor-Mega: 168-198 (48.9 - 57.7%) -- 95.7% chance to 2HKO
(if that's a 1v1 position and u both go to +6, u should Always win the 1v1 as he looses its boost if he goes with u-turn and +6 bullet punch doesn't 2hko)
252+ Atk Choice Band Zygarde Thousand Arrows vs. 248 HP / 124 Def Scizor-Mega: 138-163 (40.2 - 47.5%) -- guaranteed 3HKO
+2 64+ Atk Technician Scizor-Mega Bullet Punch vs. 4 HP / 0 Def Zygarde: 180-213 (50.2 - 59.4%) -- guaranteed 2HKO
+6 64+ Atk Technician Scizor-Mega Bullet Punch vs. 4 HP / 0 Def Zygarde: 358-423 (100 - 118.1%) -- guaranteed OHKO

 

[stuuful12]

Reserving Choice Specs Tapu Lele

Tapu Lele @ Choice Specs
Ability: Psychic Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Psychic
- Moonblast
- Psyshock
- Hidden Power Fire

Any set of Tapu Lele's will work against this core, but I prefer Choice Specs for the guaranteed OHKO on Zygarde ( its a coinflip without Specs with you slightly less favored), but you can choose what you want. Thanks to its ability nullifying priority, and a great special attack stat coupled with coverage for both pokemon, any variant of Tapu Lele's will put exceptional pressure on this core with easy switch-ins on both Bullet Punch and Extreme Speed

Hide

252 SpA Choice Specs Tapu Lele Moonblast vs. 4 HP / 0 SpD Zygarde: 486-572 (135.7 - 159.7%) -- guaranteed OHKO
252 SpA Choice Specs Tapu Lele Hidden Power Fire vs. 248 HP / 16 SpD Scizor-Mega: 384-456 (111.9 - 132.9%) -- guaranteed OHKO

 

[Meliodafu7]

Taking SD Kartana with Fightinium Z

Kartana @ Fightinium Z
Ability: Beast Boost
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Swords Dance
- Leaf Blade
- Sacred Sword
- Defog / Knock Off / Smart Strike

This core can't OHKO Kartana, with that premise in mind, It can take out both members because of its physical bulk, superior speed, sheer power after a SD and resistance against both of priority moves from this core. This mon can setup in the face of the bulky Water of the team, because most of them carry one to deal with Heatran (and teams with Kartana and Utility/SpDef Heatran are really common), as Zygarde doesn't want switch into it because of Lava Plume/Toxic shenanigans, so the Mantine, Toxapex or Gastrodon can be used as a setup fodder as they scare out and M-Scizor comes in, and then it gets nuked by +2 AoP. Zygarde gets OHKOed by +3 Leaf Blade, and at +2 it gets KOed after 2 rounds of SR, so Kartana can threat this core almost by itself.

+2 252 Atk Kartana Leaf Blade vs. 4 HP / 0 Def Zygarde: 321-378 (89.6 - 105.5%) -- 75% chance to OHKO after Stealth Rock
+2 252 Atk Kartana All-Out Pummeling (175 BP) vs. 248 HP / 124 Def Scizor-Mega: 333-392 (97 - 114.2%) -- guaranteed OHKO after Stealth Rock
+3 252 Atk Kartana Leaf Blade vs. 4 HP / 0 Def Zygarde: 400-472 (111.7 - 131.8%) -- guaranteed OHKO

 

[Mellow]

Reserving Blacephalon (GOAT mon btw (not trash))

(idk why he's not moving)
Blacephalon @ Choice Specs
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Overheat
- Fire Blast / Flamethrower
- Shadow Ball
- Hidden Power [Ice]

Clowns the GOAT. Mega Scizor dies 4 times over to Overheat and Zygarde dies to Specs Hidden Power Ice. Tbh HP Ice isn't mandatory since Shadow Ball 2HKOs Zygarde, I usually prefer HP Grass to hit Tyranitar and Gastrodon but if you really wanna fuck up Zygarde's trying to switchin to a fire move go for it. Despite Blace's bulk being fucking abysmal, it survives 2 Bullet Punches, U-turn does pitiful damage and you can try hard read Zygarde to click Extreme Speed and get it in for free and just start clicking buttons.

cooked

Mega Scizor
64+ Atk Technician Scizor-Mega Bullet Punch vs. 0 HP / 0 Def Blacephalon: 88-104 (35.6 - 42.1%) -- guaranteed 3HKO
64+ Atk Scizor-Mega U-turn vs. 0 HP / 0 Def Blacephalon: 51-60 (20.6 - 24.2%) -- guaranteed 5HKO

252 SpA Choice Specs Blacephalon Overheat vs. 248 HP / 16 SpD Scizor-Mega: 1396-1648 (406.9 - 480.4%) -- guaranteed OHKO
252 SpA Choice Specs Blacephalon Fire Blast vs. 248 HP / 16 SpD Scizor-Mega: 1188-1396 (346.3 - 406.9%) -- guaranteed OHKO
252 SpA Choice Specs Blacephalon Flamethrower vs. 248 HP / 16 SpD Scizor-Mega: 972-1144 (283.3 - 333.5%) -- guaranteed OHKO

Zygarde
252 SpA Choice Specs Blacephalon Hidden Power Ice vs. 4 HP / 0 SpD Zygarde: 460-544 (128.4 - 151.9%) -- guaranteed OHKO
252 SpA Choice Specs Blacephalon Shadow Ball vs. 4 HP / 0 SpD Zygarde: 229-270 (63.9 - 75.4%) -- guaranteed 2HKO

 

[Steel With It]

Serperior @ Leftovers
Ability: Contrary
EVs: 56 HP / 200 SpA / 252 Spe
Timid Nature
- Leaf Storm
- Hidden Power Fire
- Substitute
- Leech Seed

Serp can't switch into Outrage or U-Turn, but once it's in safely, this pair has serious trouble stopping it from snowballing.

Calcs

252+ Atk Choice Band Zygarde Thousand Arrows vs. 56 HP / 0 Def Serperior: 105-124 (34.4 - 40.6%) -- 53.8% chance to 3HKO after Leftovers recovery
252+ Atk Choice Band Zygarde Extreme Speed vs. 56 HP / 0 Def Serperior: 125-148 (40.9 - 48.5%) -- guaranteed 3HKO after Leftovers recovery
200 SpA Serperior Leaf Storm vs. 4 HP / 0 SpD Zygarde: 147-174 (41 - 48.6%) -- guaranteed 3HKO
+2 200 SpA Serperior Leaf Storm vs. 4 HP / 0 SpD Zygarde: 292-345 (81.5 - 96.3%) -- guaranteed 2HKO

64+ Atk Technician Scizor-Mega Bullet Punch vs. 56 HP / 0 Def Serperior: 111-132 (36.3 - 43.2%) -- 97.7% chance to 3HKO after Leftovers recovery
200 SpA Serperior Leaf Storm vs. 248 HP / 16 SpD Scizor-Mega: 34-40 (9.9 - 11.6%) -- possible 9HKO
+2 200 SpA Serperior Hidden Power Fire vs. 248 HP / 16 SpD Scizor-Mega: 340-404 (99.1 - 117.7%) -- 93.8% chance to OHKO

 

[micahclay]

I'll go with one that is not a switch-in by any measure, but is a decent lure, and one I've been using paired with Mega Medicham.

Lure Tyranitar

lumpy (Tyranitar) @ Shuca Berry
Ability: Sand Stream
EVs: 84 HP / 252 SpA / 182 Spe
Rash Nature
- Pursuit
- Ice Beam
- Fire Blast
- Thunderbolt / Earth Power / Ancient Power

Basically, it's a dedicated lure - it beats some of what it's usually supposed to (and provides pursuit support), and beats most of the things that think they safely deal with it - this core included. Whenever Sciz or Zygarde switch in on this, they get roasted. Still playing with the EV's, but it gets the job done. Relevant calcs:

Mega Sciz

64+ Atk Scizor-Mega U-turn vs. 0 HP / 0 Def Tyranitar: 228-270 (66.8 - 79.1%) -- guaranteed 2HKO

252+ SpA Tyranitar Fire Blast vs. 248 HP / 16 SpD Scizor-Mega: 420-496 (122.4 - 144.6%) -- guaranteed OHKO

Zygarde

252+ Atk Choice Band Zygarde Thousand Arrows vs. 0 HP / 0 Def Shuca Berry Tyranitar: 186-220 (54.5 - 64.5%) -- guaranteed 2HKO

252+ Atk Choice Band Zygarde Outrage vs. 0 HP / 0 Def Tyranitar: 247-292 (72.4 - 85.6%) -- guaranteed 2HKO after hail damage

252+ SpA Tyranitar Ice Beam vs. 4 HP / 0 SpD Zygarde: 364-432 (101.6 - 120.6%) -- guaranteed OHKO


Other victims that fall pretty easily - Lando-T (OHKO), Ferrothorn (OHKO), Celesteela (~95% chance to 2HKO). With shuca, it eats lando hits and deals with a major threat to physical sweepers.

It handles what it usually does (mostly) and clears paths for things like mega medicham - through this core as well. It's not the most orthodox, but ya know.

 

[stuuful12]

Everyone who resides in the land of the OverUsed Tier run away, as I have now descended your god to earth and have made him yours. TREMBLE for he taketh no pity on your weak little pokemon and crushes them with his iron grip

Your New God (Silvally-Bug) @ Bug Memory
Ability: RKS System
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Ice Beam
- Flamethrower
- Parting Shot
- Multi-Attack

Tremble before the might that is Silvally Bug. Admire his raw strength and character for he is now your one and only god. Erect temples in his name, and etch his name into the echelons of history for he is so honorable that he deserves this. And just like his forefather, Arceus-Bug, who completely and utterly dominates the landscape of the heavenly land of Ubers, this terrifying god shall rule the dominion of OU, without care for what stops him. Tremble ye must, for he taketh no pity of those who escape his merciless wrath. And care for him too, for he shall not forgive lazyness.

And to the unbeleivers and sinners of you who doubt the might of our new God, you shall be executed during the next fortnight. So tremble now and run away behind your pathetic Landorus's for they will not stop the beast. And in doing so, Silvally will finally claim OU. Oh but you shall harken to his inescapable wrath, for he will mold the earth in his name, and his hell-bent desire on destruction.

And to this puny pathetic core that dares call itself good, admire Silvally's performance against it, for it has no care about its abilities, and shall raze the land of puny Ground Snakes and metal Bugs for they are not worthy of sharing the same land as it resides in. SO now ye run, run as fast as ye can. For if he catches you, he won't be merciful. And to those of you who doubt that, watch now the fate a young sad man as he dies to its righteous wrath.

For not even your magician Altervisi could save him with the core, for Silvally cared not.
http://replay.pokemonshowdown.com/gen7ou-733911914

Admire this raw strength, and hold dear to your lives. For Silvally will not pity your futile attempts of escape, and shall bring swift and imminent doom on all those who wish to stop it.

 

[Astoria]

Garchomp @ Dragonium Z / Life Orb / Firium Z
Jolly Nature
EVs: 252 Atk / 252 Spe
- Swords Dance
- Earthquake
- Outrage / Dragon Claw
- Fire Fang

Garchomp can't really come in directly on Zygarde but forces it out while possibly setting up a Swords Dance. It eats both an Extream Speed and a Bulllet Punch (even at +2) easily and threatens both Zygarde and Scizor with its powerfull attacks.