QC Checks: Nayrz / Fireburn / Sweep
GP Checks: The Dutch Plumberjack / P Squared
Like a new pair of underwear at first it's constrictive, but then it becomes a part of you.
[OVERVIEW]
Deoxys-S has the highest base Speed of any Uber Pokemon, and its 50 / 90 / 90 bulk is respectable for such a utility Pokemon. Its access to Stealth Rock, Spikes, Taunt, Skill Swap, and Magic Coat makes it worth using, as consistently setting entry hazards is what composes its niche. In this area, Deoxys-S is a specialist, doing great at the one job it does but not offering a more dynamic list of uses. Using Deoxys-S is desirable due to it letting hyper offense teams free up Primal Groudon's moveset without needing to resort to other, sometimes more awkward, offensive Stealth Rock setters. Despite such utility, Deoxys-S offers next to no defensive synergy for offensive builds, partially due to the fact that flexibility in its moveset is restricted by Magic Bounce users. Deoxys-S also only fits on hyper offense teams, and even then it doesn't actually fit on very many builds.
[SET]
name: Entry Hazard Lead
move 1: Taunt
move 2: Stealth Rock
move 3: Skill Swap
move 4: Magic Coat / Spikes
item: Rocky Helmet / Focus Sash
ability: Pressure
nature: Timid
evs: 248 HP / 244 Def / 16 Spe
[SET COMMENTS]
Moves
========
Taunt is necessary to prevent the opposing Pokemon from setting up or Defogging. This also forces Pokemon to attack and eliminate Deoxys-S. Deoxys-S provides an effective means of setting Stealth Rock, and this potentially frees up a teammate's moveset, usually Primal Groudon's. Skill Swap is needed to ensure entry hazards can be set against Pokemon with the ability Magic Bounce. Magic Coat is used to reflect incoming Taunt and thus gives some edge when facing opposing Deoxys-S or hyper offense teams. Spikes can be used instead of Magic Coat as a secondary entry hazard to set once Stealth Rock is in place, giving Deoxys-S something worthwhile to do until it faints.
Set Details
========
248 HP EVs with 244 Defense EVs let Deoxys-S avoid being limited to a single layer of hazards by a Choice Band Ho-Oh's Sacred Fire that burns as well as prevent Deoxys-S from being OHKOed by most physical attacks. 16 Speed EVs and a Timid nature make Deoxys-S faster than maximum Speed Deoxys-A and Mega Aerodactyl. A Rocky Helmet punishes moves that make contact, most notably priority moves and Rapid Spin. In regards to Rapid Spin, this also breaks a Focus Sash held by Cloyster or Excadrill as well as Sturdy on Forretress. A Focus Sash ensures Deoxys-S survives any single attack so that it can be guaranteed a layer of Spikes, most notably powerful special attacks. A Mental Herb saves Deoxys-S once from being Taunted or from accidentally Taunting itself, but to ensure that you beat opposing Deoxys-S, Magic Coat is needed as well. Maximum Speed can be used to gain some edge when facing opposing Deoxys-S, and it is desired if not running Magic Coat.
Usage Tips
========
Anti-leads to Deoxys-S spotted at Team Preview may necessitate leading with another Pokemon. Even then, there are very few Pokemon that can deny this set at least Stealth Rock. Against threats that pose a great danger after setup, Taunt is used to prevent them from boosting. Threats such as Rayquaza that can set up and anti-lead Deoxys-S reasonably well are the most troublesome. Against Mega Sableye and Mega Diancie, you will have to use Skill Swap before Stealth Rock can be set. Mega Diancie 2HKOes with Moonblast and Mega Sableye only 3HKOes with Foul Play, so there is sufficient time to get Stealth Rock in place. Opposing Diancie and Sableye may choose not to Mega Evolve, in which case Deoxys-S will be unable to Skill Swap Magic Bounce. In this situation, Deoxys-S can always opt to set Stealth Rock immediately, which will ensure Stealth Rock against these foes, but this may come at the cost of having it on your side as well. Spinners are sufficiently punished by Rocky Helmet, meaning entry hazards can be continually re-set. Getting entry hazards up and then switching to a Ghost-type can also work. Against opposing Deoxys-S, you have a greater advantage if your set is running maximum Speed or if you have a Mental Herb; otherwise, you may want to anti-lead with a teammate. If Deoxys-S is paralyzed, it will no longer be fast enough to Taunt Defoggers before they remove entry hazards. Against such threats, it can use Taunt and set up hazards afterwards, but Deoxys-S may not survive for that long.
Team Options
========
Freeing up Primal Groudon's moveset is a large draw of running Deoxys-S. For this reason, Rock Polish, Swords Dance, or Double Dance Primal Groudon is a desirable teammate. Darkrai is a good partner due to how it threatens defensive teams and can lead well against some of the Pokemon Deoxys-S struggles to set up Stealth Rock on. Swords Dance Arceus formes are typically good fits for offensive builds that utilize Deoxys-S; Extreme Killer Arceus can revenge kill Darkrai and threaten Pokemon with Speed Boost, Arceus-Ghost can provide an immunity to Normal-type priority moves, and Arceus-Ground crushes Mega Diancie. A Mega Diancie of your own can lead against Darkrai and opposing Deoxys-S well and also checks several of the strong special attackers that Rocky Helmet Deoxys-S fears. Xerneas is another offensive Fairy-type that can lead well against Darkrai and Deoxys-S if it has a Choice Scarf, and it can also take full advantage of the hazard support Deoxys-S provides with a Geomancy set.
[STRATEGY COMMENTS]
Other Options
=============
A dual screens set of Taunt, Stealth Rock, Reflect, and Light Screen can be used with an EV spread of 248 HP / 8 Def / 252 Spe with a Timid nature and Light Clay. Such a set is less consistent at ensuring Stealth Rock when compared to the standard set, but the utility of screens can make setup for teammates a bit easier.
Checks and Counters
=============
**Darkrai**: Darkrai can OHKO Deoxys-S with Dark Pulse if it is running Rocky Helmet. The threat of Dark Void also causes mind games in regards to whether Deoxys-S should set entry hazards, use Taunt, or use Magic Coat.
**Taunt**: If Taunted, Deoxys-S becomes useless, as it runs no attacking moves. This mainly applies to Pokemon with priority Taunt and those that bounce Taunt back at Deoxys-S.
**Magic Bounce and Magic Coat**: Magic Bounce and Magic Coat can bounce Deoxys-S's entry hazards and Taunt back at it.
**Priority**: Priority moves can potentially limit Deoxys-S to a single turn on the battlefield; common users include Arceus, Rayquaza, Giratina-O, Deoxys-A, and Mega Lucario.
**Speed Boost**: Scolipede and Mega Blaziken can become faster than Deoxys-S due to the ability Speed Boost. In combination with Pin Missile, Scolipede becomes effective at anti-leading Deoxys-S, while Blaziken at +1 is faster than the standard spread.
**Powerful Special Attackers**: Powerful special attackers such as Latios, Judgment Arceus Ghost, Primal Kyogre, mixed Rayquaza, Yveltal, and Arceus-Dark can OHKO Deoxys-S if it does not have a Focus Sash.
GP Checks: The Dutch Plumberjack / P Squared

Like a new pair of underwear at first it's constrictive, but then it becomes a part of you.
[OVERVIEW]
Deoxys-S has the highest base Speed of any Uber Pokemon, and its 50 / 90 / 90 bulk is respectable for such a utility Pokemon. Its access to Stealth Rock, Spikes, Taunt, Skill Swap, and Magic Coat makes it worth using, as consistently setting entry hazards is what composes its niche. In this area, Deoxys-S is a specialist, doing great at the one job it does but not offering a more dynamic list of uses. Using Deoxys-S is desirable due to it letting hyper offense teams free up Primal Groudon's moveset without needing to resort to other, sometimes more awkward, offensive Stealth Rock setters. Despite such utility, Deoxys-S offers next to no defensive synergy for offensive builds, partially due to the fact that flexibility in its moveset is restricted by Magic Bounce users. Deoxys-S also only fits on hyper offense teams, and even then it doesn't actually fit on very many builds.
[SET]
name: Entry Hazard Lead
move 1: Taunt
move 2: Stealth Rock
move 3: Skill Swap
move 4: Magic Coat / Spikes
item: Rocky Helmet / Focus Sash
ability: Pressure
nature: Timid
evs: 248 HP / 244 Def / 16 Spe
[SET COMMENTS]
Moves
========
Taunt is necessary to prevent the opposing Pokemon from setting up or Defogging. This also forces Pokemon to attack and eliminate Deoxys-S. Deoxys-S provides an effective means of setting Stealth Rock, and this potentially frees up a teammate's moveset, usually Primal Groudon's. Skill Swap is needed to ensure entry hazards can be set against Pokemon with the ability Magic Bounce. Magic Coat is used to reflect incoming Taunt and thus gives some edge when facing opposing Deoxys-S or hyper offense teams. Spikes can be used instead of Magic Coat as a secondary entry hazard to set once Stealth Rock is in place, giving Deoxys-S something worthwhile to do until it faints.
Set Details
========
248 HP EVs with 244 Defense EVs let Deoxys-S avoid being limited to a single layer of hazards by a Choice Band Ho-Oh's Sacred Fire that burns as well as prevent Deoxys-S from being OHKOed by most physical attacks. 16 Speed EVs and a Timid nature make Deoxys-S faster than maximum Speed Deoxys-A and Mega Aerodactyl. A Rocky Helmet punishes moves that make contact, most notably priority moves and Rapid Spin. In regards to Rapid Spin, this also breaks a Focus Sash held by Cloyster or Excadrill as well as Sturdy on Forretress. A Focus Sash ensures Deoxys-S survives any single attack so that it can be guaranteed a layer of Spikes, most notably powerful special attacks. A Mental Herb saves Deoxys-S once from being Taunted or from accidentally Taunting itself, but to ensure that you beat opposing Deoxys-S, Magic Coat is needed as well. Maximum Speed can be used to gain some edge when facing opposing Deoxys-S, and it is desired if not running Magic Coat.
Usage Tips
========
Anti-leads to Deoxys-S spotted at Team Preview may necessitate leading with another Pokemon. Even then, there are very few Pokemon that can deny this set at least Stealth Rock. Against threats that pose a great danger after setup, Taunt is used to prevent them from boosting. Threats such as Rayquaza that can set up and anti-lead Deoxys-S reasonably well are the most troublesome. Against Mega Sableye and Mega Diancie, you will have to use Skill Swap before Stealth Rock can be set. Mega Diancie 2HKOes with Moonblast and Mega Sableye only 3HKOes with Foul Play, so there is sufficient time to get Stealth Rock in place. Opposing Diancie and Sableye may choose not to Mega Evolve, in which case Deoxys-S will be unable to Skill Swap Magic Bounce. In this situation, Deoxys-S can always opt to set Stealth Rock immediately, which will ensure Stealth Rock against these foes, but this may come at the cost of having it on your side as well. Spinners are sufficiently punished by Rocky Helmet, meaning entry hazards can be continually re-set. Getting entry hazards up and then switching to a Ghost-type can also work. Against opposing Deoxys-S, you have a greater advantage if your set is running maximum Speed or if you have a Mental Herb; otherwise, you may want to anti-lead with a teammate. If Deoxys-S is paralyzed, it will no longer be fast enough to Taunt Defoggers before they remove entry hazards. Against such threats, it can use Taunt and set up hazards afterwards, but Deoxys-S may not survive for that long.
Team Options
========
Freeing up Primal Groudon's moveset is a large draw of running Deoxys-S. For this reason, Rock Polish, Swords Dance, or Double Dance Primal Groudon is a desirable teammate. Darkrai is a good partner due to how it threatens defensive teams and can lead well against some of the Pokemon Deoxys-S struggles to set up Stealth Rock on. Swords Dance Arceus formes are typically good fits for offensive builds that utilize Deoxys-S; Extreme Killer Arceus can revenge kill Darkrai and threaten Pokemon with Speed Boost, Arceus-Ghost can provide an immunity to Normal-type priority moves, and Arceus-Ground crushes Mega Diancie. A Mega Diancie of your own can lead against Darkrai and opposing Deoxys-S well and also checks several of the strong special attackers that Rocky Helmet Deoxys-S fears. Xerneas is another offensive Fairy-type that can lead well against Darkrai and Deoxys-S if it has a Choice Scarf, and it can also take full advantage of the hazard support Deoxys-S provides with a Geomancy set.
[STRATEGY COMMENTS]
Other Options
=============
A dual screens set of Taunt, Stealth Rock, Reflect, and Light Screen can be used with an EV spread of 248 HP / 8 Def / 252 Spe with a Timid nature and Light Clay. Such a set is less consistent at ensuring Stealth Rock when compared to the standard set, but the utility of screens can make setup for teammates a bit easier.
Checks and Counters
=============
**Darkrai**: Darkrai can OHKO Deoxys-S with Dark Pulse if it is running Rocky Helmet. The threat of Dark Void also causes mind games in regards to whether Deoxys-S should set entry hazards, use Taunt, or use Magic Coat.
**Taunt**: If Taunted, Deoxys-S becomes useless, as it runs no attacking moves. This mainly applies to Pokemon with priority Taunt and those that bounce Taunt back at Deoxys-S.
**Magic Bounce and Magic Coat**: Magic Bounce and Magic Coat can bounce Deoxys-S's entry hazards and Taunt back at it.
**Priority**: Priority moves can potentially limit Deoxys-S to a single turn on the battlefield; common users include Arceus, Rayquaza, Giratina-O, Deoxys-A, and Mega Lucario.
**Speed Boost**: Scolipede and Mega Blaziken can become faster than Deoxys-S due to the ability Speed Boost. In combination with Pin Missile, Scolipede becomes effective at anti-leading Deoxys-S, while Blaziken at +1 is faster than the standard spread.
**Powerful Special Attackers**: Powerful special attackers such as Latios, Judgment Arceus Ghost, Primal Kyogre, mixed Rayquaza, Yveltal, and Arceus-Dark can OHKO Deoxys-S if it does not have a Focus Sash.
Last edited: