[OVERVIEW]
At the first glance, Groudons seem to be able to function as a decent check to -ate users with Soundproof, while being able to utilize Ground typing to maintain offensive presence against Steel-types with its STAB moves while also giving it an option to employ STAB Thousand Waves to punish Steel-types or Imposter. However, Groudon is mostly eclipsed by Zygarde-C as a defensive wall. While Zygarde-C has x4 weakness to Ice-type attacks, it boasts significantly better bulk and lower Speed tier to have upper hand against other walls like Giratina. Thus, Groudon is mostly outclassed by Zygarde-C as a wall and can only justify the use when more offensive Ground-type Pokémon is desired.
Primal Groudon, while it can only be accessed by Primal Reversion via Groudon holding Red Orb, still remains as one of the formidable threats in the tier. Ground- and Fire-type offensively hits almost the entirety of the metagame neutrally and thus it can afford to use coverage moves, support moves, or status moves without much opportunity risk. Excellent offensive stats, along with Desolate Land and mentioned advantage of dual STAB, makes Primal Groudon hard to defensively handle even when it is running defensive sets. Primal Groudon also excels defensively, offensively checking Mega Diancie, Kartana, and Primal Kyogre. Its very high Defense stat lets it blanket check majority of the physical attackers in the tier. Although it has rather mediocre Special Defense and Speed stats, Primal Groudon's versatility and the utility it provides the team with outshines such downsides.
[SET]
name: Offensive Soundpoof
move 1: Thousand Waves
move 2: Parting Shot
move 3: Recover
move 4: Stealth Rock / Nuzzle / Ice Hammer
item: Groundium Z / Rocky Helmet / Safety Goggles
ability: Soundproof
nature: Relaxed / Impish
evs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD
ivs: 0 Spe
[SET COMMENTS]
Moves
========
Thousand Waves is a STAB move that does decent damage to neutral targets thanks to Groudon's good Attack stat. It is also a primary tool it uses to threaten or punish Steel-types. Notably, it scores OHKO on Mega Diancie after Stealth Rock damage, which Zygarde-C cannot do. Parting Shot allows Groudon to pivot into a teammate on a forced or predicted switch while weakening a foe. Although this can be bounced back against Magic Bounce users, it is superior choice over U-turn due to it preventing Imposter from switching due to them copying Soundproof. Recover allows Groudon to stay healthy and consistently check threats like -ate users. The last moveslot is flexible depending on what Grodon's teammates need. Stealth Rock wears down foes over the match and allows Groudon to pressure Flying-types such as Mega Rayquaza, which it struggles against. Nuzzle allows Groudon to harshly punish foes that attempt to offensively force it out, such as Mega Rayquaza and Mega Sceptile, by hindering their Speed tier. Ice Hammer is a niche option that has a chance to OHKO Mega Rayquaza.
Set Details
========
The goal of this set is to compress a role as a check to -ate types and an offensive trapper. Speed stat is minimized for Groudon to pivot as slow as possible and retain momentum for its team, although investing on Speed to outspeed the likes of Solgaleo is a considerable option. Groudium Z allows Groudon to score clean OHKO on Registeel, Solgaleo, and Aegislash while taking out Calm Mega Audino with said Z-move after Thousand Waves and some prior damage. Rocky Helmet punishes -ate users that uses Fake Out or Extreme Speed by wearing them down, as well as slow pivots that use U-turn on Groudon. Safety Goggles prevent Groudon from getting neutralized by Spore.
Usage Tips
========
Although Groudon can handle -ate users, it should scout common threats such as Mega Rayquaza and Mega Diancie beforehand, as their special attacks can do massive damage or even KO Groudon. Once one can confirm aforementioned threats are -ate users, Groudon can be switched into them to take physical attacks or powerful Boombursts. Against Aerilate Mega Rayquaza, especially if it is holding Sky Plate, Extreme Speed still does heavy damage, and therefore Groudon's health should be managed especially if it is counted on as the only answer. Groudon can aggressively switch into Steel-types and threaten them out while setting Stealth Rock, spreading paralysis with Nuzzle, or gain momentum with Parting Shot.
Team Options
========
Groudon is well paired with -ate users or powerful wallbreakers that dislike Steel-types such as Kartana or Kyurem-W, as they appreciate removal of problematic Steel-types such as Solgaleo and Registeel and can opt for coverage moves to hit other threats that Groudon cannot handle. They also appreciate Stealth Rock support, and Groudon's ability to lure and remove Imposter Chansey, one of the greatest checks to -ate users. Defensively, acquiring Steel-types is advised as Groudon fails to stand a chance against threats like Triage Mega Rayquaza, Magic Guard Mega Diancie, and most variants of Mega Mewtwo Y. Registeel, Solgaleo, and Aegislash are all viable options to handle these threats using Prankster, Regenerator, or Flash Fire. Solgaleo is a good blanket check to Poison Heal attackers, such as Primal Kyogre and Xerneas, which uses Groudon as a setup fodder once Z-move has been used. Aegislash is especially useful since it blocks Rapid Spin and keeps Stealth Rock on the field. Specially defensive partners, such as Primal Kyogre can protect Groudon from strong special attacks.
[SET]
name: Defensive Red Orb
move 1: Thousand Waves / Thousand Arrows
move 2: Sacred Fire / V-create
move 3: U-turn / Stealth Rock
move 4: Stealth Rock / Morning Sun / Strength Sap
item: Red Orb
ability: Grassy Surge / Electric Surge / Trace / Download
nature: Careful / Sassy
evs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
[SET COMMENTS]
Moves
========
Thousand Waves can be used to trap foes and take away momentum or KO them depending on the foe, while Thousand Arrows hits the Flying-types that would otherwise may try to switch into Primal Groudon and prevents Flash Fire Celesteela from becoming a nuisance to deal with. Sacred Fire trades power with an ability to spread burn, making checks like Giratina and Zygarde-C easier to wear down. V-create, factoring STAB, harsh sunlight, and Primal Groudon's 180 Attack stat, does lethal damage to the majority of the tier and features OHKO's on most neutral offensive foes. U-turn grabs momentum as Primal Groudon pivots out, and it is especially useful due to its ability to force switches. Stealth Rock can also be used to support Primal Groudon's team and this benefits from the number of forced switches Primal Groudon causes as well. Morning Sun heals Primal Groudon and lets it check threats like Pixilate Mega Diancie and Primal Kyogre with consistency, although other recovery moves can be used for more PP at a cost of significant decrease on healing amount. Strength Sap should only be used with Thousand Waves, as this allows Primal Groudon to gradually weaken its Imposter, PP stall it, and cause it to faint. If Primal Groudon already has a Stealth Rock user, it can opt for Spikes or other coverage moves. If used with Electric Surge, Bolt Strike can be used to hit Primal Kyogre, but the move itself doesn't hit many threats outsides that and is hard to justify to fit. Ice Beam OHKOs Mega Rayquaza after Stealth Rock damage and ensures Primal Groudon is not a fodder for Zygarde-C, which would especially prove troublesome if it has Magic Bounce.
Set Details
========
Defensive Primal Groudon compresses a role of Stealth Rock user and an offensive powerhouse. Speed stat can be minimized to pivot more efficiently, but this worsens Primal Groudon's ability to deal with Primal Kyogre and Dialga. Red Orb is required for Primal Reversion. Groudon can opt to use one of many abilities that activates temporarily before it goes through Primal Reversion and gains Desolate Land. Grassy Surge provides Primal Groudon with recovery, but this also heals foes. Electric Surge provides Primal Groudon and its teammates with temporary immunity to sleep. In a similar vein, Misty Surge can be used if none of Primal Groudon's teammates appreciate the boosted base power of Electric moves, and it weakens Core Enforcer. Trace directly reveals a foe's ability before Primal Reversion, and this can be effective if Primal Groudon is used as a lead. Download, depending on the foe, can give it +1 Attack, but the boost is only temporary.
Usage Tips
========
If Stealth Rock is opted for, Primal Groudon can take advantage of its offensive presence and an ability to force switches to set said hazard early in the game. That said, as much Primal Groudon forces switches and draws in physically defensive foes like Giratina and Zygarde-C, carefully scouting foes' switch-in to Primal Groudon and pivoting with U-turn is a promising idea. V-create, while it is immensely powerful, it has low PP and is walled relatively easily by Giratina and Zygarde-C and leaves Primal Groudon susceptible to attacks, so it should be used with caution. Sacred Fire should be used carefully in the same vein, but it can be used early many times if spreading burn is desired. Primal Groudon's another efficient check is Imposter Chansey which can even switch into Ground-type moves when healthy. While Primal Groudon can trap and defeat its own Imposter one on one if using Thousand Waves and Strength Sap, it will otherwise struggle against it and even give it a free turn to recover, set hazards, or take away momentum. Defensively, Primal Groudon can be liberally switched into Mega Diancie, Kartana, and Primal Kyogre. Primal Groudon also excels at handling Mega Tyranitar and Mega Gyarados by absorbing Knock Off. Although Primal Groudon is defensively great, do not be too reckless with it, as it is quite specially frail even with boosting nature and is susceptible to residual damage and Spore due to its inability to choose other items over Red Orb.
Team Options
========
Primal Groudon can be paired with Pokémon that appreciate the ability to immensely threaten Steel-types, check Mega Diancie and Primal Kyogre, and set hazards or trap and eliminate Imposter Chansey. Dialga is an excellent partner that can handle Mega Rayquaza and threaten Dragon-types that check Primal Groudon. Variants with Regenerator and Assault Vest can safely bring in Primal Groudon with U-turn and let it preserve its PP for recovery moves and keep itself healthy to avoid 2HKO from powerful attacks such as Pixilate Mega Diancie's Boomburst and Kartana's Sunsteel Strike. Primal Groudon can take advantage of Steel-types that Dialga naturally draws in. Pixilate Mega Diancie vastly appreciates Primal Groudon's ability to cover Steel-types and set entry hazards so that it can use other moves, such as Shell Smash and King's Shield that it could previously not opt for. Primal Groudon imposterproofs Mega Diancie and can potentially remove Imposter so that foes will have a nightmare dealing Mega Diancie later in the match if their only answer to it was Imposter Chansey. Kartana is another offensive powerhouse that appreciates Primal Groudon's ability to take advantage of Steel-types and Primal Groudon itself can imposterproof Kartana. Kartana in return can break through Giratina and potentially cripple a wall by passing on its Choice Band to a wall using Switcheroo. Giratina can block Rapid Spin and imposterproof Primal Groudon, while Primal Groudon threatens out majority of the Magic Bounce users in the tier and checks Fairy-types. Mega Gyarados can handle Refrigerate users like Kyurem-W while hindering walls with Knock Off.
[SET]
name: Offensive Red Orb
move 1: Shell Smash / Shift Gear
move 2: Thousand Arrows / Bonemerang / Precipice Blades
move 3: Sacred Fire
move 4: Fleur Cannon / Morning Sun
item: Red Orb
ability: Illusion / Download
nature: Naughty / Rash / Adamant
evs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe
[SET COMMENTS]
Moves
========
This variant of Primal Groudon boosts its already high offensive stats to the level where it can OHKO or 2HKO majority of the tier. Shell Smash instantly boosts Primal Groudon to nigh unwallable levels and lets it OHKO most offensive threats after Stealth Rock damage. Shift Gear fixes Primal Groudon's Speed by letting it outspeed the entirety of the unboosted metagame while boosting the attack, letting it retain its defensive stats at a cost of lacking immediate power and an ability to use special coverage moves. As a Ground-type STAB move, Thousand Arrows is the most consistent option that handles Flash Fire Celesteela and Mega Rayquaza. Bonemerang is an option to bypass Focus Sash users such as Mega Mewtwo X and Deoxys-A, which would otherwise survive a hit and revenge kill Primal Groudon. Precipice Blades, although it is not consistent, is the only way Primal Groudon can 2HKO Unaware Primal Kyogre and Mega Gyarados on switch and allows Primal Groudon to dish out massive damage even when unboosted. Sacred Fire rounds up Primal Groudon's STAB combination and it OHKOs bulky threats such as Mega Mewtwo X and Regigigas after the boost and lets it spread status in an event where it won't find an opportunity to set up. Fleur Cannon allows Primal Groudon to deal with Giratina, Zygarde-C, and Mega Rayquaaza by OHKOing the former two after some prior damage and the latter without prior damage. Coverage against Mega Rayquaza is especially valuable if Thousand Arrows was not opted for. On the other hand, if Primal Groudon opted for Shift Gear, Morning Sun lets it consistently set up against passive foes while letting it stay healthy and check threats like Mega Diancie and Kartana.
Set Details
========
There are many options for choosing Primal Groudon's nature to meet different benchmarks. Naughty nature or Rash nature can be chosen depending on whether Primal Groudon desires a better chance to OHKO Mega Rayquaza and Primal Kyogre with +2 Thousand Arrows or a better chance to OHKO Giratina and Zygarde-C with +2 Fleur Cannon. If Primal Groudon opted for Shift Gear, Adamant nature is the best option to dish out as much damage as possible while retaining the bulk. Red Orb is mandatory for Primal Reversion. Illusion allows Primal Groudon to set up without fearing Imposter the first time it enters the battle, and thanks to the mechanic of Primal Reversion with Illusion, Imposter cannot copy Primal Groudon even after it has been hit. Download is another option to boost Primal Groudon's immediate power but this set will vulnerable to Imposter as a result. Various abilities like Electric Surge can be run to bluff defensive sets.
Usage Tips
========
Especially if running Shell Smash, Primal Groudon should avoid any form of damage, as it should be as healthy as possible to successfully set up and take as many hits from -ate users as possible. This Primal Groudon is fairly straightforward to use. After it is safely pivoted into the field by its teammate through U-turn, Volt Switch, or Parting Shot, Primal Groudon can take advantage of Steel-types or other foes it forces out and set up to pose a threat to opposing team. If Primal Groudon did not opt for Illusion, refrain from setting up as losing a speed tie against Imposter might be very detrimental for the team, as this set is extremely hard to imposterproof after the boost. Shift Gear sets can play more aggressively thanks to access to recovery moves, but it is not durable as when Primal Groudon opted for Careful or Sassy nature so it should be played with caution. Giratina and Zygarde-C are also very hard to bypass even after boosts, so make sure they are weakened or eliminated before attempting to sweep. In general, scout defensive foes before attempting to sweep, as Spectral Thief from the likes of Mega Audino and Dialga can spoil the attempt to do so.
Team Options
========
Physical attackers like Mega Mewtwo X, Kartana, and Regigigas appreciates Primal Groudon leaving massive holes in the opposing team and potentially luring and removing Giratina and Zygarde-C with boosted Fleur Cannon. Some of them also appreciate Primal Groudon's ability to deal with Steel-types. For Primal Groudon to sweep or dish out as much damage as possible, it will require various support from teammates. Knock Off users like Mega Gyarados or Mega Tyranitar can remove Assault Vest from Dragon-types and prevent them from being able to handle +2 Fleur Cannon later in the match while bringing in Primal Groudon safely via pivoting after drawing in Steel-types. Entry hazards are also appreciated, as it lets Primal Groudon opt for Thousand Arrows over Bonemerang for broader coverage and allows it to have better chance to OHKO defensive walls.
[STRATEGY COMMENTS]
Other Options
=============
Regular Groudon has very few other options to choose apart from offensive trapper; defensive sets like Fur Coat is completely outclassed by Zygarde-C, and offensive sets are outclassed by Mega Garchomp due to its Dragon typing that threatens common Ground-type checks such as Giratina and Zygarde-C and higher Attack stat. Primal Groudon, on the other hand, has numerous options to choose as coverage move or support moves. Bolt Strike hits Water-types that switch into V-create, Solar Blade is a niche option to OHKO Mega Swampert, and gimmicky options like Sunsteel Strike or Poison Fang can be used to lure and KO Sturdy Shedinja, but the two latter moves are extremely hard to justify using. Taunt on defensive sets can annoy Giratina and Zygarde-C while preventing the likes of Poison Heal Primal Kyogre and Xerneas from gaining excessive boosts or using sleep-inducing moves, but this too is hard to fit and can backfire against Magic Bounce users. Entrainment is an interesting option to check aforementioned Poison Heal sweepers and scout for Magic Bounce users before setting Stealth Rock. Substitute allows Shell Smash variants of Primal Groudon to take advantage of Prankster users that cannot do much back and often rely on Destiny Bond to shut down rampaging Primal Groudon, but this worsens Primal Groudon's coverage.
Checks and Counters
===================
**Giratina and Zygarde-C**: Both Giratina and Zygarde-C resist V-create and have immense physical bulk to handle Ground-type STAB moves. They are also viable Magic Bounce users and thus can potentially completely shut down Groudon. Giratina in particular is harder to take down as it avoids 2HKO from any attack from Groudon. However, both Giratina and Zygarde-C have a chance to fall to +2 Fleur Cannon and do not appreciate burn from Sacred Fire.
**Mega Rayquaza**: Mega Rayquaza, while it is not as durable, has enough bulk to switch into Thousand Arrows if desperately needed and resists V-create. Although it is annoyed by Stealth Rock that Primal Groudon tends to run, it can easily dent or KO in return with Aerilate-boosted Boomburst or even set up on it. However, it is incapable of handling boosted Primal Groudon, as +2 Thousand Arrows may KO it after Stealth Rock damage and +2 Fleur Cannon's damage is lethal.
**Special Attackers**: Even apart from Mega Rayquaza, Groudon is easily threatened by special attackers due to its modest Special Defense stat. This means the likes of Mega Mewtwo Y or Mega Gengar can easily overwhelm it with powerful STAB attacks, though none of them can realistically switch into Primal Groudon.
**Water-types**: Primal Kyogre massively threatens Groudon with its STAB move and Poison Heal variants can set up on it, though it must watch out for Tectonic Rage if weakened. Although Primal Groudon generally has an upper hand against Water-types thanks to Desolate Land, some Unaware Water-types such as Primal Kyogre, Mega Gyarados, and Mega Swampert can be trouble to deal with, as they can survive any attack from full health and end Primal Groudon's sweep with Spectral Thief.
**Fur Coat**: Fur Coat users have absurd level of physical bulk and take minimal damage from Groudon. Some Fur Coat users like Giratina and Zygarde-C are vulnerable to boosted Fleur Cannon, but Primal Groudon does not have much other ways to ever inflict notable damage to them.