Project AG Matchmaking

[Adhiraj8202]

Approved by Rose

AG Matchmaking

Welcome to AG matchmaking! The goal of this project is to explore effective cores featuring both top and more niche Pokemon. Most Pokemon struggle to function effectively when their checks and counters are active, so having teammates that can help beat them is important. Pokemon that work well together form good cores, which can break through defensive Pokemon, handle offensive threats well, or accomplish a combination of these things.

How Will This Work?
Each week, people will have five days to submit a good partner for the featured Pokemon (with an explanation included). When this time is up, there will be a two-day period where people will vote for their favorite partner. The winner will be added to this thread's hall of fame and leaderboard.

Rules
- You may only submit one partner per week.
- You must explain your submission. Replays and damage calculations are useful to include but not mandatory.
- Submissions mustn't be excessively gimmicky.
- You may not submit a partner that's already been submitted.
- You may reserve a Pokemon, but if you do not follow up on your reservation within 24 hours, others will be allowed to submit said Pokemon.
- You may not vote for your submission.
- You may vote even if you did not submit a partner.
- Do not edit your submission after voting starts.

Leaderboard

1st. Agcl2 Ragib (1), eavo (1)

Hall of Fame

Week 1 (Miraidon) - Koraidon by Agcl2 Ragib
Week 2 (Arceus-Ground) - Koraidon by eavo

This week's subject:

Set:

Zacian-Crowned @ Rusted Sword
Ability: Intrepid Sword
Tera Type: Dark
EVs: 104 HP / 252 Atk / 152 Spe
Jolly Nature
- Crunch
- Play Rough
- Wild Charge
- Swords Dance

 

[Agcl2 Ragib]

Reserving Koraidon


Koraidon @ Choice Scarf
Ability: Orichalcum Pulse
Tera Type: Ghost / Fire
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature / Jolly Nature
- Low Kick
- U-turn
- Outrage
- Flare Blitz

One of if not the best partner for Miraidon is definitely its fellow Generation 9 Box Art Legendary Koraidon. These two offensive behemoths are capable of defeating almost the entire metagame together and they are mutually beneficial to each other.

How Koraidon benefits Miraidon
The most common Miraidon check in the metagame is Ting-Lu. This omnipresent hazard setter is prominent for its ability to tank most of the hits of the meta. However, Koraidon is an exception to this as it can switch into this Dark / Ground wall and threaten it with its Fighting type STAB(s).
Choice Scarf Koraidon is also capable of scaring out some of Miraidon's other checks like specially defensive Arceus-Ground, Clodsire and non scarfed Calyrex-Shadow.
Koraidon can also break through a check they share in Arceus-Fairy thanks to Tera Fire.
Along with threatening Miraidon's checks, Koraidon can also help Miraidon enter the battlefield safely through U-turn.

How Miraidon benefits Koraidon
The most notable switchins to Koraidon are Ho-Oh and Arceus-Water, both of which are evaporated by Miraidon's powerful Electro Drift. Moreover, Miraidon can threaten them rather easily thanks to Koraidon's pivot move as mentioned above. Miraidon also threatens to OHKO some less common checks to Koraidon like Skeledirge and Gliscor.


This core consisting of two of the biggest offensive threats of the metagame is definitely a force to be reckoned with thanks to their raw power, fantastic speed tier and access to an unstoppable pivot move which is U-turn. In a meta with almost zero hazard removal, these two pivoting mammoths can easily dominate any game together.

Calculations
252+ Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 252 HP / 0 Def Ting-Lu: 488-576 (94.9 - 112%) -- 68.8% chance to OHKO
252+ Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 252 HP / 4 Def Arceus-Ground: 252-297 (56.7 - 66.8%) -- guaranteed 2HKO
252+ Atk Orichalcum Pulse Tera Fire Koraidon Flare Blitz vs. 248 HP / 120 Def Arceus-Fairy in Sun: 340-402 (76.7 - 90.7%) -- guaranteed 2HKO
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 252 HP / 4 Def Clodsire in Sun: 443-522 (95.4 - 112.5%) -- 75% chance to OHKO
252+ Atk Orichalcum Pulse Koraidon Flare Blitz vs. 0 HP / 0 Def Calyrex-Shadow in Sun: 355-418 (104.1 - 122.5%) -- guaranteed OHKO

252 SpA Hadron Engine Miraidon Electro Drift (133.3251953125 BP) vs. 252 HP / 0 SpD Arceus-Water in Electric Terrain: 662-782 (149 - 176.1%) -- guaranteed OHKO
252 SpA Hadron Engine Miraidon Electro Drift (133.3251953125 BP) vs. 252 HP / 36 SpD Ho-Oh in Electric Terrain: 518-612 (124.5 - 147.1%) -- guaranteed OHKO
252+ SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 0 SpD Skeledirge in Electric Terrain: 406-478 (98.5 - 116%) -- 87.5% chance to OHKO
252+ SpA Hadron Engine Miraidon Draco Meteor vs. 252 HP / 0 SpD Gliscor: 406-478 (114.6 - 135%) -- guaranteed OHKO

No replays sadly as I dont want to accidentally reveal anyone's team in AGWL.

I definitely didn’t make this post too long. So here's a cute image:

 

[09-10a]

Reserving Calyrex-Shadow

While not easy to use in a tier dominated by , and the omnipresent , Scarf trades the potency of having a "click-this-button-and-claim-a-kill-or-deal-heavy-chip" partner in crime for a thorn to various kinds of offense while still having the ability to dismantle fat, albeit at a slow pace.

Calyrex-Shadow

Calyrex-Shadow @ Choice Scarf
Ability: As One (Spectrier)
Tera Type: Ghost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Astral Barrage
- Trick
- Encore
- Grass Knot

This is a pretty mutualistic relationship that goes hand-in-hand as both and share a common check in , who happens to almost always be the sponge to whatever clicks. With U-Turn, it can bring an offensive partner that greatly pressures and for both their benefit. With Grass Knot, can heavily chip or ruin its already lacking longevity entirely by tricking it its with Spikes up.

scares the living hell out of any and and greatly chunks formes for both and itself, especially in conjunction with this hazard-heavy metagame. In return, chips the aforementioned , specially defensive , and with Tera Ghost, the niche specially defensive while keeping threats like Scale Shot and Scarf , SD/DD & , opposing and non-scarfed or whatever it is you have in mind in check, something greatly appreciates as often does not want to risk that nasty 50-50 of them attacking or clicking that sweet SD/DD especially in and 's case unless you have the nerves of steel to gamble.

Tera Ghost gives a and a pseudo Astral Barrage, allowing it to combine both breaking prowess and excellent revenge-killing potential while still providing that crucial Normal immunity.

 

[PrimalKyogre]

The two heaviest hitters of all time, Kyogre and Miraidon!
(Subject)

Miraidon @ Heavy-Duty Boots
Ability: Hadron Engine
Tera Type: Fairy
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature / Timid Nature
- Electro Drift
- Draco Meteor
- U-turn
- Taunt
(Partner)

Kyogre @ Heavy-Duty Boots / Leftovers
Ability: Drizzle
Tera Type: Fairy
EVs: 240 HP / 252 SpA / 16 Spe
Modest Nature
IVs: 0 Atk
- Origin Pulse
- Ice Beam
- Thunder
- Thunder Wave

Pivoting & Wallbreaking
Kyogre and Miraidon form a devastating wallbreaking duo, which can muscle through all popular defensive cores. Kyogre is the most consistent offensive target of Miraidon’s U-Turn, as it is capable of exploiting both of Miraidon’s common checks, namely Ting-Lu and Arceus-Ground. Kyogre gaining essentially free turns to attack is crucial for scoring offensive momentum, and can easily swing games into one’s favor. Additionally, Miraidon threatens to OHKO Eternatus and Arceus-Water, both of which bother Kyogre by preventing it from simply clicking Origin Pulse repeatedly.


Mutual Threats
Kyogre and Miraidon share a common threat in Koraidon, as it can neutralize some of Kyogre’s attacks and threaten Miraidon out. However, Kyogre and Miraidon’s presence alone places immense pressure on Koraidon, since it is one of the only Pokémon able to steal offensive momentum away from the duo. Kyogre’s Thunder Wave can slow down Choice Scarf Koraidon enough for Miraidon to outrun it, diminishing the threat it poses. On top of that, both Kyogre and Miraidon are able to terastallize into Fairy-type Pokemon, which stifles Scale Shot variants of Koraidon. Kyogre and Miraidon share a few uncommon defensive checks, those being Wo-Chien and Clodsire. However, they cannot handle both members of the core due to Miraidon’s Taunt and Kyogre’s brute strength. Overall, this pair of breakers has no trouble overwhelming their mutual threats, which makes them very difficult to stop.

 

[Rose]

Set

Ho-Oh @ Heavy-Duty Boots
Ability: Regenerator
EVs: 248 HP / 252 Def / 8 SpD
Tera Type: Fairy
Impish Nature
- Sacred Fire
- Brave Bird
- Recover
- Whirlwind

While its offensive synergy with Miraidon isn't as great as some other options, Ho-Oh is still a worthwhile partner. Miraidon is vulnerable to revenge killers like Calyrex-S, Choice Scarf Koraidon, Arceus, and Zacian-C, all of which Ho-Oh can effectively pivot in against or straight up beat thanks to its high bulk, its good typing, and Sacred Fire's high burn chance. Moreover, Ho-Oh can somewhat safely switch into certain Ting-Lu, Arceus-Fairy, and defensive Arceus-Ground, some of the premier defensive Miraidon checks, and annoy them with the possibility of a burn or phazing antics that rack up entry hazard chip damage. In return, Miraidon threatens to OHKO Pokemon Ho-Oh struggles against like Arceus-Water, Eternatus, Kyogre, and opposing Ho-Oh with its powerful STAB moves. It can safely get into position to do so via a well-timed double switch; by coming in on a predicted status move such as Recover, Toxic Spikes, or Thunder Wave; or by simply sacrificing a chunk of its HP to a resisted attack.

 

[Cutecat1122]

Arceus @ Heavy-Duty Boots
Ability: Multitype
Tera Type: Ghost
EVs: 236 HP / 252 Atk / 20 Spe
Adamant Nature
- Swords Dance
- Extreme Speed
- Shadow Claw
- Recover

Strengths
E-killer Arceus is one of the best offensive units there is, the priority of extreme speed allowing it to invest more EVs into bulk. This means it can set up, or swtich into some attacks. It can counter many threats like Calyrex-S, Ting-Lu, most Arceus forms and other Miraidons. Many defensive checks to Arceus such as Skeledirge, Toxapex and Ho-oh are easily countered by Miraidon, making these two pokemon a great match for each other.

Weaknesses
However, this combination is weak to Koraidon, as Arceus cannot OHKO it even after +2 Atk, allowing it to be easily KOed by Low Kick or Collision Course. Scarf sets are even more threatening, as it would outspeed Miraidon. Although Tera Fairy can reduce the threat, it would come at the cost of not having Tera for the rest of the battle. Zacian-C is also a huge threat, as its high speed means that it can move first and use Play Rough on Miraidon, and its steel typing makes Arceus less effective.

 

[Kanha Greninja]

Reserving Calyrex-Ice
Calyrex-Ice @ Choice Band
Ability: As One (Glastrier)
Tera Type: Ice
EVs: 252 HP / 252+ Atk / 4 Def / - Spa
Adamant Nature
- Close Combat
- Glacial Lance
- Trick
- High Horsepower
Strengths
Using u-turn on Miriadon you can pivot to Choice band Calyrex-Ice which a hard hitter on the physical side and with tera ice Glacial Lance it can either 1 hit ko weaken a lot of Miriadons checks and counters like ting lu wo chien arceus ground and clodsire the checks are also very slow which means you can run banded calyrex-ice instead of trick room it works the other way around too the limited checks to banded calyrex-ice like skeledirge toxapex dondozo and ndm you lose to miriadons special attacks
Weaknesses
note that even though calyrex ice is bulky it cant survive everything you have to preserve its health and position it well to have a chance for it to break through a few offensive walls like arceus ground
Calculations
252+ Atk Choice Band Calyrex-Ice Glacial Lance vs. 252 HP / 4 Def Ting-Lu: 632-746 (122.9 - 145.1%) -- guaranteed OHKO
252+ Atk Choice Band Calyrex-Ice Glacial Lance vs. 252 HP / 4 Def Tablets of Ruin Wo-Chien: 576-680 (154 - 181.8%) -- guaranteed OHKO
252+ Atk Choice Band Calyrex-Ice Glacial Lance vs. 252 HP / 4 Def Clodsire: 1158-1364 (249.5 - 293.9%) -- guaranteed OHKO
252+ Atk Choice Band Calyrex-Ice Glacial Lance vs. 240 HP / 0 Def Arceus-Ground: 660-776 (149.6 - 175.9%) -- guaranteed OHKO
252+ SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 4 SpD Skeledirge in Electric Terrain: 403-475 (97.8 - 115.2%) -- 87.5% chance to OHKO
252+ SpA Hadron Engine Miraidon Electro Drift (133.3251953125 BP) vs. 252 HP / 4 SpD Dondozo in Electric Terrain: 1200-1412 (238 - 280.1%) -- guaranteed OHKO
252+ SpA Hadron Engine Miraidon Electro Drift vs. 252 HP / 136+ SpD Necrozma-Dusk-Mane in Electric Terrain: 238-282 (59.7 - 70.8%) -- guaranteed 2HKO
252+ SpA Hadron Engine Miraidon Electro Drift (133.3251953125 BP) vs. 248 HP / 8 SpD Toxapex in Electric Terrain: 624-734 (205.9 - 242.2%) -- guaranteed OHKO

 

[Adhiraj8202]

Now that the four days have come to an end, it's time for the voting to commence! Remember that you're only allowed to vote for one Pokemon at a time.

Agcl2 Ragib

Koraidon @ Choice Scarf
Ability: Orichalcum Pulse
Tera Type: Ghost / Fire
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature / Jolly Nature
- Low Kick
- U-turn
- Outrage
- Flare Blitz

09-10a Calyrex

Calyrex-Shadow @ Choice Scarf
Ability: As One (Spectrier)
Tera Type: Ghost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Astral Barrage
- Trick
- Encore
- Grass Knot

PrimalKyogre Kyogre

Kyogre @ Heavy-Duty Boots / Leftovers
Ability: Drizzle
Tera Type: Fairy
EVs: 240 HP / 252 SpA / 16 Spe
Modest Nature
IVs: 0 Atk
- Origin Pulse
- Ice Beam
- Thunder
- Thunder Wave

WrathofTheLeopard Ho-Oh

Ho-Oh @ Heavy-Duty Boots
Ability: Regenerator
EVs: 248 HP / 252 Def / 8 SpD
Tera Type: Fairy
Impish Nature
- Sacred Fire
- Brave Bird
- Recover
- Whirlwind

Cutecat1122 Arceus

Arceus @ Heavy-Duty Boots
Ability: Multitype
Tera Type: Ghost
EVs: 236 HP / 252 Atk / 20 Spe
Adamant Nature
- Swords Dance
- Extreme Speed
- Shadow Claw
- Recover

Kanha Greninja Calyrex-Ice

Calyrex-Ice @ Choice Band
Ability: As One (Glastrier)
Tera Type: Ice
EVs: 252 HP / 252+ Atk / 4 Def / - Spa
Adamant Nature
- Close Combat
- Glacial Lance
- Trick
- High Horsepower

I'll personally like to vote for Agcl2 Ragib since both Koraidon and Miraidon compliment each other really well, and they can wreck havoc with both being able to pivot each other in. That's it, get started away with your votes!

 

[eavo]

Voting for Agcl2 Ragib

 

[Cutecat1122]

also voting for Agcl2 Ragib

 

[PrimalKyogre]

voting for WOTL ho-oh

 

[Rose]

My vote goes to PrimalKyogre's interesting and threatening Miraidon + Kyogre core.

 

[Kin+ak (✧∇✧)]

Voting for Cutecat112 arceus

 

[Adhiraj8202]

With that, voting slate comes to an end for Week 1 with Agcl2 Ragib being the winner with three votes, congratulations!

The runner-ups are:
WrathoftheLeopard - 1 vote
PrimalKyogre - 1 vote
Cutecat1122 - 1 vote

This week's subject is:

Set:

Arceus-Ground @ Earth Plate
Ability: Multitype
Tera Type: Fairy
EVs: 248 HP / 56 Atk / 136 Def / 68 Spe
Impish Nature
- Dragon Dance
- Earthquake
- Stone Edge
- Recover

That's it, get started with your interesting partners right away!

 

[Agcl2 Ragib]

Reserving Miraidon



Miraidon @ Heavy-Duty Boots
Ability: Hadron Engine
Tera Type: Fairy / Ghost
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature / Timid Nature
- Electro Drift
- Draco Meteor
- U-turn
- Taunt / Calm Mind / Volt Switch

Advantages of having each other as teammates:

Arceus-Ground and Miraidon form a menacing offensive core while also providing much needed defensive utility to each other. While not being the easiest to use in a metagame filled with Ting-Lu and Calyrex-Shadow, this core often manages to overcome their weaknesses with the help of each other.

Arceus-Ground is one of the most threatening set up sweepers in the metagame. It can easily go out of hand and often ends up causing heavy damage to the opposing team. Hitting the entire metagame for either super effective or neutral damage, Arceus-Ground forcing a tera on the opposing team isn't a rare site at all. However, there are a couple of switchins to this offensive leviathan which are Arceus-Water and Ting-Lu. Arceus-Water threatens its Ground Type counterpart with Will-O-Wisp and Water Type STABs. Ting-Lu can annoy it via Whirlwind / Ruination and hazard stack. Kyogre is also used sometimes as a more offensive check to Arceus-Ground.

Miraidon, on the other hand is a fast and hard hitting special attacker who often doesn't need any sort of set up to threaten the opposing team. Miraidon and Arceus-Ground weaken Ting-Lu for each other. Miraidon can also switchin on Arceus-Water with impunity and threaten it with its Electric Type STAB(s). It can do the same to Kyogre with the correct play. As mentioned above, Arceus-Ground often forces tera on the opposing team if played right. This benefits Miraidon as random tera fairy mons cannot temporarily check it after Ting-Lu is weakened enough. A very common offensive answer to Miraidon is Choice Scarf Koraidon. Thanks to the investment in bulk, Arceus-Ground is capable of surviving any two hits from Koraidon and can set up on it or stall out Koraidon's sun. Another elite revenge killer of Miraidon is E-Killer. E-killer also fails to 2HKO Arceus-Ground at +2 atk. Furthermore, Miraidon can let Arceus-Ground enter the battlefield safely via its pivot moves. Just like most other Arceus formes, Arceus-Ground is also annoyed by hazards. Miraidon can help in this scenario by blocking hazards with the help of its fast Taunt.

Calculations:
252 Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 248 HP / 136+ Def Arceus-Ground: 186-220 (41.9 - 49.6%) -- guaranteed 3HKO
+2 252+ Atk Arceus Extreme Speed vs. 248 HP / 136+ Def Arceus-Ground: 187-222 (42.2 - 50.1%) -- 0.4% chance to 2HKO
252 SpA Hadron Engine Miraidon Draco Meteor over 2 turns vs. 248 HP / 0 SpD Arceus-Ground: 375-442 (84.6 - 99.7%) -- not a KO
+1 252 SpA Calyrex-Shadow Grass Knot (120 BP) vs. 248 HP / 0 SpD Arceus-Ground: 400-472 (90.2 - 106.5%) -- 75% chance to OHKO after Stealth Rock
252 SpA Hadron Engine Miraidon Electro Drift (133.3251953125 BP) vs. 240 HP / 0 SpD Arceus-Water in Electric Terrain: 662-782 (150.1 - 177.3%) -- guaranteed OHKO

The promised cute image.....(the best one I could find)

 

[Kin+ak (✧∇✧)]

Reserving Orthworm

 

[PrimalKyogre]

One of my favorite current Balance cores, Eternatus + Arceus-Ground!
(Subject)

Arceus-Ground @ Earth Plate
Ability: Multitype
Tera Type: Fairy
EVs: 248 HP / 56 Atk / 136 Def / 68 Spe
Impish Nature
- Dragon Dance
- Earthquake
- Stone Edge
- Recover
(Partner)

Eternatus @ Heavy-Duty Boots
Ability: Pressure
EVs: 232 HP / 44 Def / 188 SpD / 44 Spe
IVs: 0 Atk
Tera Type: Fairy / Steel
Calm Nature
- Dynamax Cannon
- Recover
- Toxic
- Toxic Spikes


Eternatus and Arceus-Ground form an excellent backbone to a Balance team, boasting complementary defensive profiles and surprising offensive capabilities.


As a Defensive Core:
The pair of Arceus-Ground and Eternatus stops a great deal of the metagame’s threats, notably including eachother’s checks. Eternatus can take on Kyogre, Arceus-Water, and Ho-Oh, all of which bother Arceus-Ground. In exchange, Arceus-Ground handles Necrozma-Dusk and Zacian-C, both of which are Steel-type Pokemon that often switch in on Eternatus. Additionally, physically defensive Arceus-Ground has the unique ability to help deal with both Koraidon and Miraidon, which each threaten Eternatus. It is also worth noting that Eternatus and Arceus-Ground’s Tera-types are designed to suppress the offensive capabilities of the aforementioned pair of Dragon-type Pokemon. As a Poison-type Pokemon, Eternatus absorbs Toxic Spikes, which Arceus-Ground is otherwise vulnerable to.


As an Offensive Core:
Eternatus’s support helps to whittle down teams and lets Arceus-Ground thrive. Toxic Spikes wears down Arceus-Ground’s checks, including bulky Kyogre, Ting-Lu, Arceus-Water, Will-O-Wisp variants of Arceus-Ground, and Arceus-Fairy. Furthermore, Toxic Spikes puts a timer on revenge killers to boosted Arceus-Ground, such as Choice Scarf Koraidon, Calyrex-S, and Ditto. Arceus-Ground threatens Toxic Spikes absorbers (primarily other Eternatus) with Earthquake. Eternatus’s Steel-type switch-ins Necrozma-Dusk and Zacian-C offer an excellent opportunity for Arceus-Ground to switch in and set up Dragon Dance. Arceus-Ground can also use Tera Fairy to set up on the Dragon-type Koraidon and Miraidon.

 

[Cutecat1122]

reserving grimmsnarl

Grimmsnarl @ Light Clay
Ability: Prankster
Tera Type: Ghost
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Light Screen
- Reflect
- Taunt
- Spirit Break

How does it benefit Arceus-Ground?
Groundceus is extremely weak to Kyogre and Grass Knot Caly-S, especially scarf variants, as it outspeeds even after one ddance. Light screen reduces the damage from water spout or origin pulse, while spirit break further weakens the attacks, allowing Groundceus to set up. If Groundceus teras into fairy, it could survive with about 50% health after it sets up once, allowing it to either ddance again or use eq to weaken or even kill Kyorge/Caly-S (after spirit break is used). Taunt can prevent chip damage from hazards (if Ting-Lu didn't exist), makes Ho-oh unable Whirlwind, and stops encore Caly-S. +1 Atk Groundceus can 2HKO almost everything, and those that can't be 2HKOed (bulky Arceus, Ting-Lu etc.) don't do much damage through screens anyway

Weaknesses
This combo has a lot of weaknesses (such as Zac-C, Kyogre, Ting-Lu, anything Groundceus cannot 2HKO etc.), especially since Grimmsnarl isn't even that good (but enternatus was taken so...). Grimmsnarl cannot pivot out effectively, wasting turns for the screens, and if Parting Shot was used instead of Spirit Break, Groundceus would have to tank whatever attack is coming in. Although Groundceus has recovery and decent bulk, its low speed (before ddance) would mean that it gets hit before it recovers, so it might get KOed before it manages to recover

Calculations (defensive)
Kyogre:
-1 252 SpA Kyogre Water Spout (150 BP) vs. 248 HP / 0 SpD Arceus-Ground in Rain through Light Screen: 234-276 (52.8 - 62.3%) -- guaranteed 2HKO
-1 252+ SpA Choice Specs Kyogre Origin Pulse vs. 248 HP / 0 SpD Arceus-Ground in Rain through Light Screen: 282-333 (63.6 - 75.1%) -- guaranteed 2HKO
252+ SpA Choice Specs Kyogre Origin Pulse vs. 248 HP / 0 SpD Tera Fairy Arceus-Ground in Rain through Light Screen: 210-248 (47.4 - 55.9%) -- 81.6% chance to 2HKO
Calyrex-S:
252 SpA Life Orb Tera Grass Calyrex-Shadow Grass Knot (120 BP) vs. 248 HP / 0 SpD Arceus-Ground through Light Screen: 261-308 (58.9 - 69.5%) -- guaranteed 2HKO
252 SpA Life Orb Calyrex-Shadow Astral Barrage vs. 248 HP / 0 SpD Tera Fairy Arceus-Ground through Light Screen: 131-154 (29.5 - 34.7%) -- 8.9% chance to 3HKO
Arceus:
+2 252+ Atk Life Orb Arceus Extreme Speed vs. 248 HP / 136+ Def Arceus-Ground through Reflect: 122-144 (27.5 - 32.5%) -- guaranteed 4HKO

Calculations (offensive)
56 Atk Earth Plate Arceus-Ground Earthquake vs. 0 HP / 0 Def Calyrex-Shadow: 192-226 (56.3 - 66.2%) -- guaranteed 2HKO
+1 56 Atk Earth Plate Arceus-Ground Earthquake vs. 240 HP / 204+ Def Kyogre: 192-226 (47.8 - 56.3%) -- 28.1% chance to 2HKO after Leftovers recovery
+1 56 Atk Earth Plate Arceus-Ground Earthquake vs. 0 HP / 4 Def Koraidon: 211-249 (61.8 - 73%) -- guaranteed 2HKO
56 Atk Earth Plate Arceus-Ground Earthquake vs. 0 HP / 0 Def Miraidon: 318-374 (93.2 - 109.6%) -- 56.3% chance to OHKO
56 Atk Earth Plate Arceus-Ground Earthquake vs. 0 HP / 0 Def Zacian-Crowned: 282-332 (86.7 - 102.1%) -- 12.5% chance to OHKO
+1 56 Atk Earth Plate Arceus-Ground Earthquake vs. 240 HP / 0 Def Arceus: 204-240 (46.2 - 54.4%) -- 55.5% chance to 2HKO

252+ Atk Grimmsnarl Spirit Break vs. 240 HP / 204+ Def Kyogre: 102-121 (25.4 - 30.1%)
252+ Atk Grimmsnarl Spirit Break vs. 0 HP / 0 Def Calyrex-Shadow: 153-181 (44.8 - 53%) -- 28.9% chance to 2HKO
252+ Atk Grimmsnarl Spirit Break vs. 252 HP / 4 Def Ting-Lu: 210-248 (40.8 - 48.2%) -- guaranteed 3HKO after Leftovers recovery

 

[eavo]

SD Koraidon + DD Groundceus is an interesting core that can be fitted on a variety of offense teams.

Arceus-Ground

SET

Arceus-Ground @ Earth Plate
Ability: Multitype
Tera Type: Fairy
EVs: 248 HP / 56 Atk / 136 Def / 68 Spe
Impish Nature
- Dragon Dance
- Earthquake
- Stone Edge
- Recover

Koraidon

SET

Koraidon @ Loaded Dice
Ability: Orichalcum Pulse
Tera Type: Stellar / Fire / Ghost
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Scale Shot
- Swords Dance
- Low Kick
- Flare Blitz

Both Koraidon and Arceus-Ground have devastating wallbreaking potential, with Koraidon pressuring Arceus-Ground's checks such as bulky Kyogre, removing its rain on a predicted switch, and Arceus-Water. Arceus-Ground, in return pressures checks such as Ho-oh, usually forcing it to use up its Tera. Tera Stellar on Koraidon ensures that it is able to OHKO opposing defensive Arceus formes at +2 with a layer of Spikes. Tera Fire grants a burn immunity and resistance to Fairy typed attacks. Tera Ghost prevents it from being revenge killed by Extreme Killer Arceus.

The given Arceus-Ground set is unable to be revenge killed by Jolly Scarf Koraidon and +2 Extreme Killer Arceus from full HP. Arceus-Ground is also able to check Miraidon for Koraidon. This opens up more opportunities for Koraidon and Arceus-Ground to sweep through teams, as their shared checks are worn down by each other.

Important Calcs

+2 252+ Atk Arceus Extreme Speed vs. 248 HP / 136+ Def Arceus-Ground: 187-222 (42.2 - 50.1%) -- 0.4% chance to 2HKO

252 Atk Orichalcum Pulse Koraidon Low Kick (120 BP) vs. 248 HP / 136+ Def Arceus-Water: 186-220 (41.9 - 49.6%) -- guaranteed 3HKO

+2 252 Atk Orichalcum Pulse Tera Stellar Koraidon Scale Shot (4 hits) vs. 248 HP / 244+ Def Arceus-Ground: 384-456 (86.6 - 102.9%) -- approx. 93.8% chance to OHKO after 1 layer of Spikes

+2 252 Atk Orichalcum Pulse Tera Stellar Koraidon Scale Shot (4 hits) vs. 252 HP / 252+ Def Ho-Oh: 464-552 (111.5 - 132.6%) -- guaranteed OHKO

+1 56 Atk Arceus-Ground Stone Edge vs. 252 HP / 252+ Def Ho-Oh: 408-484 (98 - 116.3%) -- 93.8% chance to OHKO

252 SpA Choice Specs Hadron Engine Miraidon Draco Meteor vs. 248 HP / 0 SpD Arceus-Ground: 373-439 (84.1 - 99%) -- guaranteed 2HKO

252 SpA Hadron Engine Miraidon Draco Meteor over 2 turns vs. 248 HP / 0 SpD Arceus-Ground: 375-442 (84.6 - 99.7%) -- not a KO

 

[Kin+ak (✧∇✧)]

Reserving Orthworm

orthworm. everyone saw it coming, shed tail shenaningan haha. But no worries, it's not just a shed tail. Spikes, as well as its defensive stats let it be An actual thing for the core.
What can orthworm do?
-set up Spikes While being immune to Ting's Earthquake.
-give 172HP+status immunity to An ally (Ideal in bulky setup sweeper groundceus's case)
-check/counter stuff (sometimes helped by tera)

• Close Combat-less Zacian-C
• Dragon dance NDM
• Ddance groundceus
• Ekiller Arceus
• KyuremBlack
• Tinglu

While its special bulk is not enviable (gets OHKO'd by unboosted caly-s) its physical bulk as well as great defensive profile lets it check some stuff that is somewhat relevant in the tier. Ironpress and Spikes are good, But you probably want rest If you want shed tail. No you dont. 50% health orthworm just won't put a rest. it'll DIE. so it doesnt fit Very well in defensive teams that dont run Wish. Here is the set. basically a punish-the-opponent-for-seeing-it-as-the-literally-ZU-mon-it-really-is that can help you in delicate situations. Max roll +2 silk scarf arceus Max atk espeed does 30%. Pro tip: sure, It's a lead, a Hazard setter, that has the benefit of being immune to glimmora's mortal spin, but leading with it is not always the wisest option, you might lose unnecessary hp that'll bother you into helping Arceus-G via shed tail

So anyways, here is the set:
Orthworm (M) @ Rocky Helmet / Sitrus Berry
Ability: Earth Eater
Shiny: Yes (Unnecessary, but blue sky worm is cute)
Tera Type: Poison / Ghost (immune To fighting, ekiller running eq, and spin) / Fairy / Grass (fk spore)
(The Tera Really is only to get your opponent to switch again and again, to optimize spike's consequences and effect.
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Iron Defense
- Body Press
- Spikes
- Shed Tail
Literally Max defense Cause there is Nothing else to invest an orthworm in. Spikes is Very important: It's like the only reason I chose orthworm. I havent spoke about shed tail Yet? Well, do you need a presentation of shed tail?
Overall, Orthworm's defensive traits, as Well as its movepool in shed tail and Spikes, is a decent help to Bulky Dragon Dance Arceus-Ground. So yes, the help of [defensive pokemon] orthworm to [kinda defensive] bulky ddancer Groudceus is essentially offensive.

Ill do a grammar check and maybe edit the message when it won't be 11 Pm on a weekday, and Because my brain is kinda turned off i'll leave you on that
For the fish to be caught, you ask for the fishermen's help. For the Ground god to work the best, you ask for the earth eater's help

 

[Rose]

Set

Necrozma-Dusk-Mane @ Heavy-Duty Boots
Ability: Prism Armor
Tera Type: Fire
EVs: 252 HP / 136 Atk / 120 Spe OR 252 HP / 136 SpD / 120 Spe
Adamant / Careful Nature
- Dragon Dance
- Photon Geyser
- Sunsteel Strike
- Morning Sun

Dragon Dance Necrozma-DM and Arceus-Ground work together to both put pressure on the opposing team and provide valuable defensive utility. They can weaken each other's checks such as Ting-Lu, Giratina-O, bulky Kyogre, and bulky Arceus formes like Arceus-Fairy, opposing Arceus-Ground, and Arceus-Water, potentially enabling the other to sweep. Arceus-Ground also might force Ho-Oh to Terastallize into a Fairy-type, making it vulnerable to Necrozma-DM's Sunsteel Strike. Moreover, Necrozma-DM dislikes Choice Scarf Koraidon, which Arceus-Ground can check decently. Arceus-Ground also checks Zacian-C—freeing up Necrozma-DM to use Attack investment to improve its wallbreaking prowess or a specially defensive spread to better handle foes like Eternatus, Calm Mind Arceus formes, and Deoxys-A—and check Necrozma-DM and Miraidon, meaning Necrozma-DM can better afford to drop Earthquake / Knock Off for Photon Geyser so it can hit Water-types harder.

 

[LOrd Fernado]

reserving cspecs mirai

Set

Miraidon @ Choice Specs
Ability: Hadron Engine
EVs: 252 SpA / 4 SpD / 252 Spe
Tera Type: Dragon
Timid Nature
- Electro Drift
- Draco Meteor
- Overheat
- U-turn

Choice Spces Miraidon is the matchmaking partner of my choice since, even at +2, Ddance Arc-Ground struggles to break through Arceus-Water, Landorus-T, Gliscor, and to a lesser extent Dondozo. In return, Arceus-Ground can break through Clodsire and help with some Eternatus variants.

 

[Arpitraj0]

Wo chien is the good parter for arceus ground

 

[Tic-Tac-Toe Guru]

Tentacruel is the optimal partner for Arceus-Ground (or any Pokémon really). It’s typing, it’s stats, it’s movepool… oh wait…


Toxapex @ Rocky Helmet
Ability: Regenerator
Tera Type: Fairy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Toxic
- Recover
- Haze
- Ice Beam

I hate this motherfucker so much. It stole my boy’s spotlight as the premier Water/Poison type… but I can’t deny how great of a defensive Pokémon Toxapex is, and I believe it’s a pretty solid defensive backbone for Groundceus. Now I’m not a gen9 player, so take my analysis with a grain of salt, but one of the main vulnerabilities I see with Arceus-Ground is the potential to be revenge-killed by EKiller, to which I feel Toxapex is a great switch-in, being able to eat Espeeds and dish back chip damage with Rocky Helmet and prevent a snowball reverse sweep with its physical bulk and Haze. It also acts as a switch-in to Arceus-Water, another meta pick that threatens Groundceus, which Toxapex can threaten with Toxic. It also has some nice defensive synergy with Groundceus when taking on Miraidon, as Groundceus can switch in to electric moves, and both Toxapex and Groundceus can play mind games in that scenario by utilizing Tera Fairy on a potential Draco Meteor. Ice Beam is on my set for the ability to provide extra chip to the dragons of the meta but could also easily be replaced with Toxic Spikes or Chilling Water. Overall, I think these two have some pretty nice synergy and can act as a pretty great pair.

 

[Adhiraj8202]

Apologies for uploading the commencing of this week's voting slate late, got busy with some other responsibilities. Remember that you're only allowed to vote for one Pokemon at a time.

Agcl2 Ragib Miraidon

Miraidon @ Heavy-Duty Boots
Ability: Hadron Engine
Tera Type: Fairy / Ghost
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature / Timid Nature
- Electro Drift
- Draco Meteor
- U-turn
- Taunt / Calm Mind / Volt Switch

Kin+ak Orthworm

Tera Type: Poison / Ghost
EVs: 252 HP / 252 Def / 4 SpD
Impish Nature
- Iron Defense
- Body Press
- Spikes
- Shed Tail

PrimalKyogre Eternatus

Eternatus @ Heavy-Duty Boots
Ability: Pressure
EVs: 232 HP / 44 Def / 188 SpD / 44 Spe
IVs: 0 Atk
Tera Type: Fairy / Steel
Calm Nature
- Dynamax Cannon
- Recover
- Toxic
- Toxic Spikes

Cutecat1122 Grimmsnarl

Grimmsnarl @ Light Clay
Ability: Prankster
Tera Type: Ghost
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Light Screen
- Reflect
- Taunt
- Spirit Break

Eavo Koraidon

Koraidon @ Loaded Dice
Ability: Orichalcum Pulse
Tera Type: Stellar / Fire / Ghost
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Scale Shot
- Swords Dance
- Low Kick
- Flare Blitz

WrathofTheLeopard (Rose) NDM

Necrozma-Dusk-Mane @ Heavy-Duty Boots
Ability: Prism Armor
Tera Type: Fire
EVs: 252 HP / 136 Atk / 120 Spe OR 252 HP / 136 SpD / 120 Spe
Adamant / Careful Nature
- Dragon Dance
- Photon Geyser
- Sunsteel Strike
- Morning Sun

Tic-Tac-Toe-Guru Toxapex

Toxapex @ Rocky Helmet
Ability: Regenerator
Tera Type: Fairy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Toxic
- Recover
- Haze
- Ice Beam

Note: LOrd Fernado's submission for Specs Miraidon will not be considered since Agcl2 Ragib already reserved Miraidon. Also, Arpitraj0's submission for Wo-Chien will not be considered since it was not backed by a proper explanation. This not only implies for the aforementioned users, but also for everyone. Remember to read all the rules and make sure you're doing everything right. :^)

About my vote, I'd like to vote for PrimalKyogre since both Eternatus and Arceus-Ground compliment each other really well with checking each others' counters and checks, and that Toxic Spikes shuts down Revenge Killers and Defensive Cores for Arceus-Ground to wreak havoc. That's about it, get started with your votes!