Minority
Numquam Vincar
QC Checks: Sweep / Shrang / Problems
GP Checks: Winry / P Squared
Puppy Purple Power
[OVERVIEW]
Poison Arceus is often overlooked in the ORAS Ubers metagame, but its unique typing in the Uber tier allows it to function as a formidable check to Fairy-types such as Xerneas. It also has other qualities that are great for an Arceus forme, such as being immune to poison, eliminating Toxic Spikes upon entry, and being able to smash Clefable, a task that most Arceus cannot accomplish. Furthermore, Poison Arceus has the fantastic bulk, Speed, and support movepool that all Arceus have, and its Poison typing in particular assists it against balance and stall teams, as the combination of Toxic immunity and bulk is difficult for passive teams to break. Unfortunately, Poison Arceus sports no other key resistances, with Fighting being a much less common and threatening type than it has been in previous generations, and it has weaknesses to common Ground- and Psychic-type moves. Offensively, its typing is not stellar either, having no common trumps other than to Fairy-types, while the common Steel-types are immune to it. Primal Groudon, Latios, and Latias drastically hurt Poison Arceus's viability, and like several other defensive Arceus formes, it can wind up being bait for threats such as Ho-Oh, Kyogre, and Mewtwo. The greatest reason Poison Arceus sees little use, however, is because running it means you forfeit the ability to use an Arceus type that can preform better in a wider field of roles.
[SET]
name: Calm Mind
move 1: Calm Mind
move 2: Recover
move 3: Earth Power
move 4: Sludge Bomb / Judgment
item: Toxic Plate
ability: Multitype
nature: Timid
evs: 248 HP / 84 SpA / 176 Spe
[SET COMMENTS]
Moves
========
Being immune to Toxic eliminates a major check to Arceus formes, giving Poison Arceus a unique niche as a Calm Mind user. Recover is a given to keep Poison Arceus healthy and allow it to be able to continually set up Calm Mind. Earth Power is the best coverage option for Calm Mind Poison Arceus, as it hits the Steel-types immune to Poison Arceus's STAB attack while also dealing good damage against Primal Groudon. Sludge Bomb is used over Judgment because the slight drop in power is often worth the 30% chance to poison the foe; this can be especially useful against Latias, Latios, and Kyogre switch-ins, and it gives Poison Arceus the edge in a Calm Mind war. Judgment is still an option for those that prefer the additional power. Fire Blast is another coverage option that can be run in place of Earth Power, as it allows Poison Arceus to smash threats such as Ferrothorn, Mega Scizor, and Skarmory.
Set Details
========
248 HP EVs are used to capitalize on Poison Arceus's natural bulk and aid in the setup of Calm Mind. 176 Speed EVs with a Timid nature meet the benchmark of outspeeding Pokemon with base 110 Speed and below. The remaining 84 EVs are placed into Special Attack to slightly increase Poison Arceus's damage output. Running maximum Speed investment is another option in order to Speed tie with opposing maximum Speed Arceus formes. An alternate spread of 248 HP / 164 SpD / 96 Spe with a Timid nature is another option that gives up some Speed and offensive power to better check Geomancy Xerneas.
Usage Tips
========
An integral part of using a Calm Mind Arceus is to make liberal use of Calm Mind. Setting up with Calm Mind when your opponent has a check that can immediately force Poison Arceus out only serves to give your opponent a free turn. Calm Mind should also not be set up when your opponent still has an offensive check to Poison Arceus, such as Mewtwo or Deoxys-A, because you cannot hope to get past them alive. Frequent use of Recover is needed to keep Poison Arceus healthy enough to still be a check for intended threats and to also prevent it from being knocked out by a potential critical hit while setting up. This set greatly struggles against Ho-Oh and has to be at +2 with Stealth Rock up if it is to have any chance of breaking it; in the case of an inevitable switch to Ho-Oh, it is best to double switch to an appropriate check. It should be noted that this set can break through Latias and Latios, but only if they have prior damage, as Poison Arceus has been EVed to outspeed them. In general, this set can be played more offensively to help prevent the Pokemon for which it is bait to from getting free turns, such as fishing for poison when throwing around Sludge Bomb.
Team Options
========
Primal Groudon is a teammate that is able to smash a variety of Poison Arceus's checks, such as Steel-types, while Poison Arceus can absorb Toxic aimed at Primal Groudon. Latias and Latios have their weakness to the Fairy-type covered by Poison Arceus while they also provide an immunity to Ground-type attacks aimed at Poison Arceus. Yveltal can also provide a Ground immunity and appreciates Poison Arceus's ability to check Fairy-types. If Calm Mind Poison Arceus is used on an offensive team, Darkrai is a teammate that appreciates the check to Fairy-types, particularly Choice Scarf Xerneas. Giratina-O and Sableye are both defensive Pokemon that can also greatly benefit from having Poison Arceus as a teammate, as their greatest weakness is to Fairy. Although Klefki stacks a weakness to Ground-types and Ho-Oh, it can be a great teammate, as it checks Latios and Latias and can also cripple other threatening Pokemon such as Mewtwo. Primal Kyogre can check defensive Ground-types for Poison Arceus and also helps to pressure Primal Groudon, Latios, and Latias. Tyranitar can provide Poison Arceus with a check to Ho-Oh, Latios, and Latias, while in return Poison Arceus can take Fairy- and Fighting-type attacks aimed at Tyranitar. Kyurem-W is an offensive partner that can blast through Ground-types, Latios, and Latias, while Zekrom can check Kyogre and Ho-Oh and revenge kill Mewtwo. Lastly, Rayquaza can serve as an offensive check for both Primal Groudon and Primal Kyogre, and it has enough sheer power to adequately threaten any defensive check to Poison Arceus.
[SET]
name: Tar Monster (Support)
move 1: Defog
move 2: Recover
move 3: Poison Jab
move 4: Thunder Wave / Will-O-Wisp
item: Toxic Plate
ability: Multitype
nature: Impish
evs: 248 HP / 204 Def / 56 Spe
[SET COMMENTS]
Moves
========
Poison Arceus has a unique niche as a Defogger, as it is immune to Poison while also having solid defensive stats and instant recovery. Recover is a mandatory move that maintains longevity; this is especially crucial when pitted against balance and stall teams which struggle to knock out Poison Arceus. Poison Jab is used in place of Sludge Bomb or Judgment, as it can 2HKO any Xerneas lacking extensive Defense investment. Poison Jab is also better at hitting Mewtwo switch-ins, can 3HKO Gothitelle, and retains the 30% chance to poison targets. Thunder Wave is used to cripple Xerneas, Mewtwo, Latios, and Latias, the latter three of which are common switch-ins to Poison Arceus. Will-O-Wisp is an alternative status option that can neuter Ground- and Steel-types such as Ground Arceus, Excadrill, Klefki, and Ferrothorn.
Set Details
========
248 HP EVs are used in order to make the greatest use of Poison Arceus's natural bulk. 204 Defense EVs with an Impish nature allow Poison Arceus to tank a Psystrike from Mewtwo. 56 Speed EVs are enough to outspeed Adamant Rayquaza, while use of Thunder Wave in general helps Poison Arceus to still move first despite the low Speed investment. An alternate spread of 248 HP / 164 Def / 96 Spe with a Jolly nature can be used to outspeed all Pokemon up to maximum investment base 100 Speed Pokemon at the cost of some physical bulk.
Usage Tips
========
This Poison Arceus set is best used on more defensive teams that need to role compress anti-entry hazard support, a check for Geomancy Xerneas, and a method to break through defensive Fairy-types. While this set can comfortably check any Xerneas set, you should make sure that Poison Arceus stays healthy enough that it can properly do so. This usually means playing this set more defensively, for example by opting to Recover as Arceus forces a foe out rather than attacking. Poison Arceus is immune to Toxic and clears away Toxic Spikes; use it to absorb both so that the rest of your team remains poison-free. It dislikes being burned, however, so keep it away from Scald and Will-O-Wisp, as the passive damage and Attack drop to Poison Jab limit its effectiveness. Thunder Wave can only hit opposing Mewtwo, Latios, and Latias as they come in, as in most circumstances Poison Arceus cannot afford to stay in against them. While it can be tempting to remove entry hazards as soon as possible, it is important to note that in some cases it is better to use Thunder Wave to prevent a powerful foe from coming in for free. If using Will-O-Wisp, you will similarly want to hit faster Ground-types such as Ground Arceus as they come in. Do not switch out if Arceus is against a Mega Scizor or a Klefki, as they cannot hope to touch Arceus while it can burn them with Will-O-Wisp. Outside of the 30% chance to poison a target via Poison Jab, this set cannot hope to punish Primal Groudon, so if you expect it to switch in, make sure you have a defensive check available, or alternatively double switch immediately to an offensive check.
Team Options
========
Primal Groudon is a teammate that can threaten a variety of this set's checks, such as Ho-Oh, Mewtwo, Kyogre, and Ferrothorn. In return, Poison Arceus can be used to absorb Toxic aimed at Primal Groudon and Defog away Spikes. Yveltal provides a handy Ground immunity, while many of its checks are Fairy-types that Poison Arceus is capable of tackling. Primal Kyogre can threaten many of the Ground-types that Poison Arceus fears, and it also appreciates the removal of entry hazards. Both Latias and Latios can check Primal Groudon and Primal Kyogre for Poison Arceus, and the Defog support from Poison Arceus increases the set options for Latias and Latios. Giratina-O provides a Ground immunity and a method to check Mewtwo and Deoxys-A, while in return Poison Arceus can check Fairy-types for it. Sableye is able to check both Mewtwo and Deoxys-A for Poison Arceus, which can act as a solid switch-in for Fairy-types that want to hit Sableye. Ho-Oh can be used to blast through Ferrothorn and further pressures the Ground-types that check Poison Arceus, while the rainbow bird greatly appreciates the Defog support. Lugia can greatly benefit from the Defog support in order to keep its Multiscale intact and also benefits from Poison Arceus's ability to absorb Toxic; in return, Lugia can check Primal Groudon, Latios, Latias, and Ground-types. Tyranitar benefits from having Poison Arceus as a partner to take Fairy-and Fighting-type attacks, while Tyranitar can check Ho-Oh, Latios, and Latias. Mega Scizor is an interesting partner choice that can Pursuit Latios and Latias, and when paired with Poison Arceus the two threaten Fairy-types. However, Mega Scizor does stack a weakness to Primal Groudon, Ho-Oh, and Kyogre.
[STRATEGY COMMENTS]
Other Options
=============
A Swords Dance set is a possible option that retains Poison Arceus's ability to check Fairy-types while having a physically offensive presence. The greatest issue with such a set is that it is not particularly good at breaking any traditional Extreme Killer Arceus checks other than Clefable, thus leaving it mostly outclassed. Roar can be used to force out Geomancy Xerneas and prevent Poison Arceus from being setup bait for a few other threats, although the move can be difficult to find room for. Ice Beam is a coverage option that can hit Gliscor, Landorus-T, and Mega Salamence for massive damage, but it doesn't hit much else. Magic Coat is highly useful for deflecting Taunt and entry hazards, but Poison Arceus doesn't really have the room for it either. Will-O-Wisp is an option on the Calm Mind set to neuter physical attackers; however, mono-Poison coverage has become significantly less effective in ORAS Ubers as compared to previous generations. Psych Up could be used to copy stat changes from a Pokemon such as Xerneas; however, it only sees use in a few specific situations. Perish Song can be used on a support set to place a timer on any Pokemon that attempts to set up or come in, although finding room for it is difficult. If needed, you can run Tailwind support, but this is only ever useful for a very specific type of build. Poison Arceus has access to Stealth Rock, but, because it can lose to Latias and Latios in addition to being bait for Ho-Oh, it is a poor choice on a Pokemon that doesn't really have room for it. Lastly, Stone Edge is a move that could be run on the support set to let Poison Arceus bait Ho-Oh and then knock it out; however, it has virtually no other use.
Checks and Counters
===================
**Primal Groudon**: Calm Mind Poison Arceus is able to mitigate its weakness to Primal Groudon by running Earth Power, but it still does not want to face one at full health. The support set has no method of combating this threat at all, while Primal Groudon can threaten to knock out Poison Arceus with its Ground-type STAB moves.
**Mewtwo**: While it does not want to switch into a Thunder Wave or a Poison Jab, Mewtwo has the Speed, type advantage, and offensive power to maintain an advantage over Poison Arceus in almost any situation.
**Deoxys-A**: Sporting the most powerful Psychic-type attack in the game along with the Speed and Special Attack to fully take advantage of it, Deoxys-A can revenge kill Poison Arceus easily.
**Ho-Oh**: Due to its immense special bulk, the only thing Ho-Oh fears when switching into Calm Mind Poison Arceus is being poisoned by Sludge Bomb. Offensive sets can deal enough damage with Sacred Fire, Brave Bird, or Earthquake to break down Poison Arceus.
**Latias and Latios**: Latios and Latias will not like switching into Thunder Wave or being poisoned by Poison Arceus's STAB moves, but they can deal significant damage with a Calm Mind-boosted Psyshock.
**Kyogre**: Kyogre has the bulk to absorb Poison Arceus's STAB moves and has the sheer power to break through Poison Arceus with neutral Water-type attacks.
**Ground-types**: Gliscor, Ground Arceus, Excadrill, and Landorus-T can all be a handful for Poison Arceus. Gliscor has the typing and defensive capabilities to prevent it from being broken by Poison Arceus, Ground Arceus can blast through with a Swords Dance-boosted Earthquake, Excadrill is immune to Poison and also has a strong Earthquake, and offensive Landorus-T packs a punch and only fears Will-O-Wisp.
**Psychic Arceus**: The highly uncommon Psychic Arceus can beat Poison Arceus one-on-one due to its type advantage.
**Sableye**: Sableye has access to priority Taunt, Will-O-Wisp, and Recover to slowly break down Poison Arceus, which can only hope to poison Sableye with its STAB attacks.
**Kyurem-W and Reshiram**: Both Kyurem-W and Reshiram have powerful special attacks that can 2HKO the support Poison Arceus set; however, they do not resist Poison Arceus's moves.
**Ferrothorn**: Unless Poison Arceus carries Fire Blast or Will-O-Wisp, Ferrothorn can force a stalemate.
GP Checks: Winry / P Squared
[OVERVIEW]
Poison Arceus is often overlooked in the ORAS Ubers metagame, but its unique typing in the Uber tier allows it to function as a formidable check to Fairy-types such as Xerneas. It also has other qualities that are great for an Arceus forme, such as being immune to poison, eliminating Toxic Spikes upon entry, and being able to smash Clefable, a task that most Arceus cannot accomplish. Furthermore, Poison Arceus has the fantastic bulk, Speed, and support movepool that all Arceus have, and its Poison typing in particular assists it against balance and stall teams, as the combination of Toxic immunity and bulk is difficult for passive teams to break. Unfortunately, Poison Arceus sports no other key resistances, with Fighting being a much less common and threatening type than it has been in previous generations, and it has weaknesses to common Ground- and Psychic-type moves. Offensively, its typing is not stellar either, having no common trumps other than to Fairy-types, while the common Steel-types are immune to it. Primal Groudon, Latios, and Latias drastically hurt Poison Arceus's viability, and like several other defensive Arceus formes, it can wind up being bait for threats such as Ho-Oh, Kyogre, and Mewtwo. The greatest reason Poison Arceus sees little use, however, is because running it means you forfeit the ability to use an Arceus type that can preform better in a wider field of roles.
[SET]
name: Calm Mind
move 1: Calm Mind
move 2: Recover
move 3: Earth Power
move 4: Sludge Bomb / Judgment
item: Toxic Plate
ability: Multitype
nature: Timid
evs: 248 HP / 84 SpA / 176 Spe
[SET COMMENTS]
Moves
========
Being immune to Toxic eliminates a major check to Arceus formes, giving Poison Arceus a unique niche as a Calm Mind user. Recover is a given to keep Poison Arceus healthy and allow it to be able to continually set up Calm Mind. Earth Power is the best coverage option for Calm Mind Poison Arceus, as it hits the Steel-types immune to Poison Arceus's STAB attack while also dealing good damage against Primal Groudon. Sludge Bomb is used over Judgment because the slight drop in power is often worth the 30% chance to poison the foe; this can be especially useful against Latias, Latios, and Kyogre switch-ins, and it gives Poison Arceus the edge in a Calm Mind war. Judgment is still an option for those that prefer the additional power. Fire Blast is another coverage option that can be run in place of Earth Power, as it allows Poison Arceus to smash threats such as Ferrothorn, Mega Scizor, and Skarmory.
Set Details
========
248 HP EVs are used to capitalize on Poison Arceus's natural bulk and aid in the setup of Calm Mind. 176 Speed EVs with a Timid nature meet the benchmark of outspeeding Pokemon with base 110 Speed and below. The remaining 84 EVs are placed into Special Attack to slightly increase Poison Arceus's damage output. Running maximum Speed investment is another option in order to Speed tie with opposing maximum Speed Arceus formes. An alternate spread of 248 HP / 164 SpD / 96 Spe with a Timid nature is another option that gives up some Speed and offensive power to better check Geomancy Xerneas.
Usage Tips
========
An integral part of using a Calm Mind Arceus is to make liberal use of Calm Mind. Setting up with Calm Mind when your opponent has a check that can immediately force Poison Arceus out only serves to give your opponent a free turn. Calm Mind should also not be set up when your opponent still has an offensive check to Poison Arceus, such as Mewtwo or Deoxys-A, because you cannot hope to get past them alive. Frequent use of Recover is needed to keep Poison Arceus healthy enough to still be a check for intended threats and to also prevent it from being knocked out by a potential critical hit while setting up. This set greatly struggles against Ho-Oh and has to be at +2 with Stealth Rock up if it is to have any chance of breaking it; in the case of an inevitable switch to Ho-Oh, it is best to double switch to an appropriate check. It should be noted that this set can break through Latias and Latios, but only if they have prior damage, as Poison Arceus has been EVed to outspeed them. In general, this set can be played more offensively to help prevent the Pokemon for which it is bait to from getting free turns, such as fishing for poison when throwing around Sludge Bomb.
Team Options
========
Primal Groudon is a teammate that is able to smash a variety of Poison Arceus's checks, such as Steel-types, while Poison Arceus can absorb Toxic aimed at Primal Groudon. Latias and Latios have their weakness to the Fairy-type covered by Poison Arceus while they also provide an immunity to Ground-type attacks aimed at Poison Arceus. Yveltal can also provide a Ground immunity and appreciates Poison Arceus's ability to check Fairy-types. If Calm Mind Poison Arceus is used on an offensive team, Darkrai is a teammate that appreciates the check to Fairy-types, particularly Choice Scarf Xerneas. Giratina-O and Sableye are both defensive Pokemon that can also greatly benefit from having Poison Arceus as a teammate, as their greatest weakness is to Fairy. Although Klefki stacks a weakness to Ground-types and Ho-Oh, it can be a great teammate, as it checks Latios and Latias and can also cripple other threatening Pokemon such as Mewtwo. Primal Kyogre can check defensive Ground-types for Poison Arceus and also helps to pressure Primal Groudon, Latios, and Latias. Tyranitar can provide Poison Arceus with a check to Ho-Oh, Latios, and Latias, while in return Poison Arceus can take Fairy- and Fighting-type attacks aimed at Tyranitar. Kyurem-W is an offensive partner that can blast through Ground-types, Latios, and Latias, while Zekrom can check Kyogre and Ho-Oh and revenge kill Mewtwo. Lastly, Rayquaza can serve as an offensive check for both Primal Groudon and Primal Kyogre, and it has enough sheer power to adequately threaten any defensive check to Poison Arceus.
[SET]
name: Tar Monster (Support)
move 1: Defog
move 2: Recover
move 3: Poison Jab
move 4: Thunder Wave / Will-O-Wisp
item: Toxic Plate
ability: Multitype
nature: Impish
evs: 248 HP / 204 Def / 56 Spe
[SET COMMENTS]
Moves
========
Poison Arceus has a unique niche as a Defogger, as it is immune to Poison while also having solid defensive stats and instant recovery. Recover is a mandatory move that maintains longevity; this is especially crucial when pitted against balance and stall teams which struggle to knock out Poison Arceus. Poison Jab is used in place of Sludge Bomb or Judgment, as it can 2HKO any Xerneas lacking extensive Defense investment. Poison Jab is also better at hitting Mewtwo switch-ins, can 3HKO Gothitelle, and retains the 30% chance to poison targets. Thunder Wave is used to cripple Xerneas, Mewtwo, Latios, and Latias, the latter three of which are common switch-ins to Poison Arceus. Will-O-Wisp is an alternative status option that can neuter Ground- and Steel-types such as Ground Arceus, Excadrill, Klefki, and Ferrothorn.
Set Details
========
248 HP EVs are used in order to make the greatest use of Poison Arceus's natural bulk. 204 Defense EVs with an Impish nature allow Poison Arceus to tank a Psystrike from Mewtwo. 56 Speed EVs are enough to outspeed Adamant Rayquaza, while use of Thunder Wave in general helps Poison Arceus to still move first despite the low Speed investment. An alternate spread of 248 HP / 164 Def / 96 Spe with a Jolly nature can be used to outspeed all Pokemon up to maximum investment base 100 Speed Pokemon at the cost of some physical bulk.
Usage Tips
========
This Poison Arceus set is best used on more defensive teams that need to role compress anti-entry hazard support, a check for Geomancy Xerneas, and a method to break through defensive Fairy-types. While this set can comfortably check any Xerneas set, you should make sure that Poison Arceus stays healthy enough that it can properly do so. This usually means playing this set more defensively, for example by opting to Recover as Arceus forces a foe out rather than attacking. Poison Arceus is immune to Toxic and clears away Toxic Spikes; use it to absorb both so that the rest of your team remains poison-free. It dislikes being burned, however, so keep it away from Scald and Will-O-Wisp, as the passive damage and Attack drop to Poison Jab limit its effectiveness. Thunder Wave can only hit opposing Mewtwo, Latios, and Latias as they come in, as in most circumstances Poison Arceus cannot afford to stay in against them. While it can be tempting to remove entry hazards as soon as possible, it is important to note that in some cases it is better to use Thunder Wave to prevent a powerful foe from coming in for free. If using Will-O-Wisp, you will similarly want to hit faster Ground-types such as Ground Arceus as they come in. Do not switch out if Arceus is against a Mega Scizor or a Klefki, as they cannot hope to touch Arceus while it can burn them with Will-O-Wisp. Outside of the 30% chance to poison a target via Poison Jab, this set cannot hope to punish Primal Groudon, so if you expect it to switch in, make sure you have a defensive check available, or alternatively double switch immediately to an offensive check.
Team Options
========
Primal Groudon is a teammate that can threaten a variety of this set's checks, such as Ho-Oh, Mewtwo, Kyogre, and Ferrothorn. In return, Poison Arceus can be used to absorb Toxic aimed at Primal Groudon and Defog away Spikes. Yveltal provides a handy Ground immunity, while many of its checks are Fairy-types that Poison Arceus is capable of tackling. Primal Kyogre can threaten many of the Ground-types that Poison Arceus fears, and it also appreciates the removal of entry hazards. Both Latias and Latios can check Primal Groudon and Primal Kyogre for Poison Arceus, and the Defog support from Poison Arceus increases the set options for Latias and Latios. Giratina-O provides a Ground immunity and a method to check Mewtwo and Deoxys-A, while in return Poison Arceus can check Fairy-types for it. Sableye is able to check both Mewtwo and Deoxys-A for Poison Arceus, which can act as a solid switch-in for Fairy-types that want to hit Sableye. Ho-Oh can be used to blast through Ferrothorn and further pressures the Ground-types that check Poison Arceus, while the rainbow bird greatly appreciates the Defog support. Lugia can greatly benefit from the Defog support in order to keep its Multiscale intact and also benefits from Poison Arceus's ability to absorb Toxic; in return, Lugia can check Primal Groudon, Latios, Latias, and Ground-types. Tyranitar benefits from having Poison Arceus as a partner to take Fairy-and Fighting-type attacks, while Tyranitar can check Ho-Oh, Latios, and Latias. Mega Scizor is an interesting partner choice that can Pursuit Latios and Latias, and when paired with Poison Arceus the two threaten Fairy-types. However, Mega Scizor does stack a weakness to Primal Groudon, Ho-Oh, and Kyogre.
[STRATEGY COMMENTS]
Other Options
=============
A Swords Dance set is a possible option that retains Poison Arceus's ability to check Fairy-types while having a physically offensive presence. The greatest issue with such a set is that it is not particularly good at breaking any traditional Extreme Killer Arceus checks other than Clefable, thus leaving it mostly outclassed. Roar can be used to force out Geomancy Xerneas and prevent Poison Arceus from being setup bait for a few other threats, although the move can be difficult to find room for. Ice Beam is a coverage option that can hit Gliscor, Landorus-T, and Mega Salamence for massive damage, but it doesn't hit much else. Magic Coat is highly useful for deflecting Taunt and entry hazards, but Poison Arceus doesn't really have the room for it either. Will-O-Wisp is an option on the Calm Mind set to neuter physical attackers; however, mono-Poison coverage has become significantly less effective in ORAS Ubers as compared to previous generations. Psych Up could be used to copy stat changes from a Pokemon such as Xerneas; however, it only sees use in a few specific situations. Perish Song can be used on a support set to place a timer on any Pokemon that attempts to set up or come in, although finding room for it is difficult. If needed, you can run Tailwind support, but this is only ever useful for a very specific type of build. Poison Arceus has access to Stealth Rock, but, because it can lose to Latias and Latios in addition to being bait for Ho-Oh, it is a poor choice on a Pokemon that doesn't really have room for it. Lastly, Stone Edge is a move that could be run on the support set to let Poison Arceus bait Ho-Oh and then knock it out; however, it has virtually no other use.
Checks and Counters
===================
**Primal Groudon**: Calm Mind Poison Arceus is able to mitigate its weakness to Primal Groudon by running Earth Power, but it still does not want to face one at full health. The support set has no method of combating this threat at all, while Primal Groudon can threaten to knock out Poison Arceus with its Ground-type STAB moves.
**Mewtwo**: While it does not want to switch into a Thunder Wave or a Poison Jab, Mewtwo has the Speed, type advantage, and offensive power to maintain an advantage over Poison Arceus in almost any situation.
**Deoxys-A**: Sporting the most powerful Psychic-type attack in the game along with the Speed and Special Attack to fully take advantage of it, Deoxys-A can revenge kill Poison Arceus easily.
**Ho-Oh**: Due to its immense special bulk, the only thing Ho-Oh fears when switching into Calm Mind Poison Arceus is being poisoned by Sludge Bomb. Offensive sets can deal enough damage with Sacred Fire, Brave Bird, or Earthquake to break down Poison Arceus.
**Latias and Latios**: Latios and Latias will not like switching into Thunder Wave or being poisoned by Poison Arceus's STAB moves, but they can deal significant damage with a Calm Mind-boosted Psyshock.
**Kyogre**: Kyogre has the bulk to absorb Poison Arceus's STAB moves and has the sheer power to break through Poison Arceus with neutral Water-type attacks.
**Ground-types**: Gliscor, Ground Arceus, Excadrill, and Landorus-T can all be a handful for Poison Arceus. Gliscor has the typing and defensive capabilities to prevent it from being broken by Poison Arceus, Ground Arceus can blast through with a Swords Dance-boosted Earthquake, Excadrill is immune to Poison and also has a strong Earthquake, and offensive Landorus-T packs a punch and only fears Will-O-Wisp.
**Psychic Arceus**: The highly uncommon Psychic Arceus can beat Poison Arceus one-on-one due to its type advantage.
**Sableye**: Sableye has access to priority Taunt, Will-O-Wisp, and Recover to slowly break down Poison Arceus, which can only hope to poison Sableye with its STAB attacks.
**Kyurem-W and Reshiram**: Both Kyurem-W and Reshiram have powerful special attacks that can 2HKO the support Poison Arceus set; however, they do not resist Poison Arceus's moves.
**Ferrothorn**: Unless Poison Arceus carries Fire Blast or Will-O-Wisp, Ferrothorn can force a stalemate.
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