General Fastest Pokemon in the game. Outspeeds even Pokemon at +1 and Choice Scarf users including Mega Gyarados, Mega Charizard X, and Genesect. Makes an excellent revenge killer and late-game sweeper with usable offenses. Gigantic movepool allow it to carry out a multitude of roles. Spikes and Stealth Rock allow it to setup hazards quickly, making it an effective lead for HO. Can also be a suicide rain setter or a a fast Dual Screen setter. Very frail. Atk / SpA aren't fantastic. Vulnerable to most priority moves. Offensive LO Deoxys-S @ Life Orb Trait: Pressure EVs: 4 Atk / 252 SpA / 252 Spe Naive Nature - Psycho Boost - Low Kick - Ice Beam - Knock Off / Stealth Rock / Fire Punch This set is primarily a revenge killer but is also a great late-game cleaner. Psycho Boost is Deoxys-S's preferred STAB move due to its high immediate power. Low Kick hits Steel-types and does a truckload to Tyranitar. Superpower can also be used here to revenge Greninja and weakened Excadrill. Ice Beam allows Deoxys-S to revenge Garchomp, Landorus-T, and Dragonite, which it outspeeds even at +1. Knock Off cripples Chansey switch-ins and also is nice for Aegislash. Fire Punch OHKOes Genesect; Deoxys-S easily outspeeds even Choice Scarf Genesect. Stealth Rock can easily be set up on the many switches you force. The EVs and nature complement its role as a revenge killer. Life Orb is the standard item for a cleaner, boosting its power while giving it the freedom to change moves. Hazard Lead Deoxys-S @ Focus Sash Trait: Pressure EVs: 252 HP / 4 Def / 252 Spe Jolly Nature - Stealth Rock - Spikes - Taunt - Superpower / Fire Punch / Magic Coat / Mirror Coat The set aims to setup entry hazards quickly early-game, and should be used as a lead. Stealth Rock is the most important entry hazard. Spikes is a secondary hazard of which several layers can be set. Taunt prevents opposing leads such as Garchomp and Terrakion from setting up Stealth Rock first turn. Superpower OHKOes Bisharp, a common countermeasure to Deoxys-S leads. While it can Sucker Punch, it faces the 50/50 of you setting up entry hazards at the same time. Fire Punch OHKOes Genesect before it U-turns, but you need 252 Speed with Jolly to outspeed the Choice Scarf set. Magic Coat helps you remedy Taunt from Prankster users such as Sableye and Thundurus. Mirror Coat (which should only be used with Focus Sash) OHKOes Aegislash after it uses Shadow Ball on Deoxys-S. Full Speed + Jolly outspeeds Choice Scarf Genesect and is preferred in most cases so that Deoxys-S can at least tie with other max Speed Deoxys-S However, a spread of 252 HP / 252 Def / 4 Spe make Deoxys-S as physically defensive as possible so it tanks hits easier to potentially setup more entry hazards. This means Deoxys-S gets more hazards up on common offensive leads such as Terrakion and Garchomp. Focus Sash guarantees at least one entry hazard, and should always be used with Mirror Coat. Rocky Helmet whittles away at physical attackers health, the most common offensive leads, but should only be used with the mentioned physically defensive spread. Rain Setter Deoxys-S @ Damp Rock Trait: Pressure EVs: 252 HP / 252 Def / 4 Spe Impish Nature - Rain Dance - Stealth Rock - Taunt - Magic Coat / Spikes This set sets up rain early-game for rain HO teams. Rain Dance sets up the rain, allowing rain sweepers to clean through opposing teams. Stealth Rock is a necessary entry hazard on virtually all teams, and Deoxys-S has the room to run it. Magic Coat prevents opposing Deoxys-S from using Taunt, as the majority of opposing Deoxys-S will outspeed you. Spikes is an additional hazard in case you have the opportunity to set it up, and it benefits rain's heavily offensive nature. The EVs and nature let you tank hits from the most common attacking leads, hopefully setting up both Rain Dance and Stealth Rock. Damp Rock is mandatory to give your rain sweepers more time to sweep. Dual Screens Deoxys-S @ Light Clay Trait: Pressure EVs: 252 HP / 4 SpD / 252 Spe Timid Nature - Reflect - Light Screen - Stealth Rock - Taunt This set sets up Dual Screens so that frailer setup sweepers can setup and sweep. Reflect is the screen for physical attacks. Light Screen is the screen for special attacks. Stealth Rock is the all-important entry hazard. Taunt stops Pokemon like Terrakion from Taunting you themself. The EVs and nature focus on maximizing Speed first, and then the rest delegated to HP. Light Clay extends the duration of the Dual Screens. Synergy Offensive LO Doesn't need too much support; it supports its team. Keldeo is nice to beat the problematic Bisharp, Tyranitar, and Skarmory. In return, Deoxys-S can take care of Mega Venusaur and Latios. Excadrill beats Tyranitar, Bisharp, and Aegislash, while also providing Rapid Spin support in games where the opponent also has a Deoxys-S lead. Hazard Lead Supports hyper offensive teams with the likes of Bisharp, Aegislash, Talonflame, Greninja, Keldeo, and setup sweepers such as Mega DD Tyranitar and Mega DD Charizard X. Excadrill is nice as it is the most viable Rapid Spin user, its Sand Rush and Choice Scarf sets fit well on hyper offensive teams, and Rapid Spin is overall a better alternative to Defog as it doesn't remove Deoxys-S's own hazards. Rain Setter Swift Swim sweepers such as Kabutops, Kingdra, and Seismitoad. General rain sweepers such as Keldeo, Tornadus-T, Mega Ampharos, and Azumarill. Rain support such as Politoed and Ferrothorn. Dual Screens Sweepers such as Mega Gyarados and Mega Charizard X. Powerful but frail Pokemon such as Exploud and Crawdaunt. Boosting Baton Passers such as Gorebyss and Venomoth. Other Options Nasty Plot sweeper. Skill Swap for Magic Bounce users. Alternate Moves for revenge killer set. Thunderbolt for regular Gyarados. Extreme Speed to bypass Talonflame's Brave Bird and KO it if it is weakened sufficiently. Checks and Counters Aegislash walls non-Knock Off and can scout for it. Talonflame revenge kills offensive set. Bisharp revenge kills offensive set. Thundurus can Taunt it if it lacks Magic Coat. Tyranitar can limit it to one layer if it lacks Superpower. Espeon and Xatu have Magic Bounce. Skarmory walls it.