taken over from Flashstorm57, credit to him for getting it qc approved. I have his skeleton, I will turn it into a fully-fledged write-up asap.
[SET]
name: Rain Dance
move 1: Rain Dance
move 2: Thunder
move 3: Air Slash
move 4: Volt Switch / Hidden Power Grass
item: Damp Rock
ability: Levitate
nature: Modest / Timid
evs: 4 Def / 252 SpA / 252 Spe
[SET COMMENTS]
<p>With its excellent offensive and defensive typing, Rotom-S makes an excellent user of Rain Dance. By virtue of its easily spammed STABs, Air Slash and Thunder, it checks many Pokemon that cause great trouble to rain teams. Thunder is perfectly accurate in rain, boasting 180 Base Power after STAB and amazing coverage. It fries every bulky Water-type not named Seismitoad, which is extremely helpful for the numerous rain sweepers that cannot hope to break past them. Additionally, it possesses a 30% paralysis chance that benefits slower Pokemon who might attempt to make use of the rain, such as Octillery. Air Slash is Rotom-S's other STAB move, having excellent coverage with Thunder and hitting the many Grass-types populating NU super effectively; this is important because of the resistance these Pokemon have to Water-type attacks. In a pinch, Rotom-S can attempt to use the combination of Air Slash's flinch and Thunder's paralysis to break through any troublesome opposition, though Rotom-S should have teammates that can prevent this need from arising in the first place.</p>
<p>While Rotom-S's Flying typing benefits him offensively with a STAB Air Slash, it is also a huge plus defensively. It enables Rotom-S to take Grass-type attacks directed towards the rain sweepers it is often partnered with. In this way, Rotom-S is one of the best teammates a rain sweeper might desire. The last moveslot is mainly based on personal preference; Volt Switch allows Rotom-S to bring in a teammate for free and obtain momentum, but Hidden Power Grass also has use to smack Seismitoad and Golem, both of which are common switch-ins to Rotom-S.</p>
[ADDITIONAL COMMENTS]
<p>The given EVs maximize power and Speed, allowing Rotom-S to effectively perform its roles of setting up rain and checking Pokemon that trouble rain-based teams. A Modest nature is preferred for the additional offensive kick it provides, but Timid is also an option to outspeed a few other notable threats, including Pinsir and Braviary. Alternatively, the Speed EVs could be transferred to HP in conjunction with 0 Speed IVs and a Quiet nature to almost guarantee that Volt Switch go second every time, letting Rotom-S bring a teammate in unscathed. Where moves are concerned, Hidden Power Ice is another option, hitting Altaria and Golem hard while also having neutral coverage on Seismitoad. Another move that should be considered is Pain Split, a semi-reliable recovery move that lets Rotom-S set up Rain Dance more often throughout any given match.</p>
<p>Due to the fact that this Rotom-S is used to set up rain, teammates that benefit from rain are obvious. Among the best of these Pokemon is Seismitoad, as it has Swift Swim and Rotom-S eliminates many of Seismitoad's common checks. Ludicolo is another excellent choice, as it is able to handle Pokemon that trouble Rotom-S, such as Seismitoad, Altaria, and most Ground-types, and can abuse rain both offensively and defensively. Beartic is a bit of an odd choice, but it has Swift Swim and can eliminate special walls, including Lickilicky, Altaria, and Probopass. Gorebyss and Huntail deserve a mention, as they can set up Shell Smash and direct massive waves to drown most, if not all, of NU. Armaldo is the final rain sweeper that makes a great partner, setting up and spinning away Stealth Rock, and benefiting from rain with Swift Swim. Wish support from Lickilicky allows Rotom-S to set up Rain Dance more often. Lastly, Rain Dance Mantine is a great partner, as it appreciates the removal of Water-types and the weakening of Amoonguss that Rotom-S offers.</p>
[SET]
name: Rain Dance
move 1: Rain Dance
move 2: Thunder
move 3: Air Slash
move 4: Volt Switch / Hidden Power Grass
item: Damp Rock
ability: Levitate
nature: Modest / Timid
evs: 4 Def / 252 SpA / 252 Spe
[SET COMMENTS]
<p>With its excellent offensive and defensive typing, Rotom-S makes an excellent user of Rain Dance. By virtue of its easily spammed STABs, Air Slash and Thunder, it checks many Pokemon that cause great trouble to rain teams. Thunder is perfectly accurate in rain, boasting 180 Base Power after STAB and amazing coverage. It fries every bulky Water-type not named Seismitoad, which is extremely helpful for the numerous rain sweepers that cannot hope to break past them. Additionally, it possesses a 30% paralysis chance that benefits slower Pokemon who might attempt to make use of the rain, such as Octillery. Air Slash is Rotom-S's other STAB move, having excellent coverage with Thunder and hitting the many Grass-types populating NU super effectively; this is important because of the resistance these Pokemon have to Water-type attacks. In a pinch, Rotom-S can attempt to use the combination of Air Slash's flinch and Thunder's paralysis to break through any troublesome opposition, though Rotom-S should have teammates that can prevent this need from arising in the first place.</p>
<p>While Rotom-S's Flying typing benefits him offensively with a STAB Air Slash, it is also a huge plus defensively. It enables Rotom-S to take Grass-type attacks directed towards the rain sweepers it is often partnered with. In this way, Rotom-S is one of the best teammates a rain sweeper might desire. The last moveslot is mainly based on personal preference; Volt Switch allows Rotom-S to bring in a teammate for free and obtain momentum, but Hidden Power Grass also has use to smack Seismitoad and Golem, both of which are common switch-ins to Rotom-S.</p>
[ADDITIONAL COMMENTS]
<p>The given EVs maximize power and Speed, allowing Rotom-S to effectively perform its roles of setting up rain and checking Pokemon that trouble rain-based teams. A Modest nature is preferred for the additional offensive kick it provides, but Timid is also an option to outspeed a few other notable threats, including Pinsir and Braviary. Alternatively, the Speed EVs could be transferred to HP in conjunction with 0 Speed IVs and a Quiet nature to almost guarantee that Volt Switch go second every time, letting Rotom-S bring a teammate in unscathed. Where moves are concerned, Hidden Power Ice is another option, hitting Altaria and Golem hard while also having neutral coverage on Seismitoad. Another move that should be considered is Pain Split, a semi-reliable recovery move that lets Rotom-S set up Rain Dance more often throughout any given match.</p>
<p>Due to the fact that this Rotom-S is used to set up rain, teammates that benefit from rain are obvious. Among the best of these Pokemon is Seismitoad, as it has Swift Swim and Rotom-S eliminates many of Seismitoad's common checks. Ludicolo is another excellent choice, as it is able to handle Pokemon that trouble Rotom-S, such as Seismitoad, Altaria, and most Ground-types, and can abuse rain both offensively and defensively. Beartic is a bit of an odd choice, but it has Swift Swim and can eliminate special walls, including Lickilicky, Altaria, and Probopass. Gorebyss and Huntail deserve a mention, as they can set up Shell Smash and direct massive waves to drown most, if not all, of NU. Armaldo is the final rain sweeper that makes a great partner, setting up and spinning away Stealth Rock, and benefiting from rain with Swift Swim. Wish support from Lickilicky allows Rotom-S to set up Rain Dance more often. Lastly, Rain Dance Mantine is a great partner, as it appreciates the removal of Water-types and the weakening of Amoonguss that Rotom-S offers.</p>
