NEW SUBMISSION:
(currently PU)
Name: Masquerain
Type: Bug/Water
Abilities: Intimidate / Levitate / Water Bubble (hidden ability; replaces Unnerve)
New Moves: Flip Turn, Life Dew, Rapid Spin, Snipe Shot (already got Electroweb in a previous slate)
Removed Moves: Hydro Pump, Quiver Dance
Justification: 
Araquanid at home...is still probably damn decent given how powerful Water Bubble is as an ability and given that Masquerain has at least both better SpA and Speed even though it's far frailer. Regardless, it has always bothered me how cute little 
Surskit goes from its unique Bug/Water typing to the banal and doomed Bug/Flying typing, especially since it took forever to actually decent Flying STAB. While Araquanid finally rectified that (...four entire gens later), Araquanid is unfortunately gone now, so this will have to do, as seen with people already using it as a suicide lead Sticky Webs setter (just because the pickings are that slim). Unfortunately due to Water Bubble, it needs to lose both Hydro Pump and Quiver Dance, otherwise it would just outright
massacre things, which is funny until it happens to you. Even letting it have Snipe Shot is a bit...tenuous, honestly. (I imagine its new Levitate ability never actually gets used, but it does at least let it still pretend to be the Bug/Flying mon it unfortunately became in addition to just being what Game Freak should done from the beginning if they wanted yet another Bug off the ground just because it had wings; much like making a special-oriented Grass/Ghost mon, Game Freak seems weirdly allergic to just giving any Bug the Levitate ability since even the most obvious one of 
Beedrill doesn't get it, only general disappointment 
Vikavolt who would prefer almost any other ability.)
SLATE 03 RESUBMISSIONS:
(Now all with Choke I guess, even though I'm bit wary of that on Rotom, and Tsareena gets Cutting Remark.)
(currently NU, PU, PU, UU, RU, and OU respectively)
Name: Rotom and
its forms
Type: (Rotom) Electric/Ghost
(Rotom-Fan) Electric/Flying
(Rotom-Frost) Electric/Ice
(Rotom-Heat) Electric/Fire
(Rotom-Mow) Electric/Grass
(Rotom-Wash) Electric/Water
Abilities: (Rotom) Levitate / Adaptability / Pure Power (hidden ability)
(Rotom-Fan) Neutralizing Gas / Gale Wings (obtained from Slate 02) / Wind Power (hidden ability)
(Rotom-Frost) Levitate / Refrigerate / Overcoat (hidden ability)
(Rotom-Heat) Levitate / Harvest / Electric Surge (hidden ability)
(Rotom-Mow) Levitate / Chlorophyll / Grassy Surge (hidden ability)
(Rotom-Wash) Levitate / Storm Drain / Misty Surge (hidden ability)
New Moves: (Rotom and thus all forms) Choke, Defog, Pain Split, Poltergeist, Shadow Claw, Shadow Sneak, Weather Ball, and Zing Zap
(all Rotom forms but not Rotom) Rapid Spin
(Rotom-Fan only)
Air Cutter and Tailwind
(Rotom-Frost only) Chilly Reception and Ice Beam
(Rotom-Heat only) Flamethrower and Heal Bell
(Rotom-Mow only) Energy Ball and Solar Beam
(Rotom-Wash only) Heal Bell and Surf
Removed Moves: [none for now, may have to be Nasty Plot though]
Justification: Despite how much was already submitted for Slate 03 by time I returned, Rotom and its forms were not among them. Despite having voted for them before, I was disappointed that the changes when I did so were so meager, so I've decided to make them far more involved this. This especially since asymmetry bugs me so much; while Rotom-Fan is deserving of an ability other than Levitate, it rather threw everything out of sync there. So here's an massive attempt to fix that and so many other things, with each form getting three new moves and two new abilities in addition to base-Rotom's changes in part to keep that symmetry and in part to be faithful to in-game and how the form changing and move reminding works--thus only ever gaining or losing four new moves in all when changing forms:
Rotom: Despite amusingly being in a tier above its Fan and Frost forms, it still needs the most changes overall, so it gets two very different but strong abilities. Adaptability makes its special attacks quite strong but not overwhelming and probably best on Rain where it can spam (Specs) Thunder without fear of missing. Meanwhile while through the power of TV yoga Pure Power makes its physical attacks as strong as 
Azumarill's while having much more Speed but held back by having half of the base HP and intentionally by its still very limited physical movepool that includes no way to boost its Attack presently; it literally had no STAB physical moves before this, and it briefly had Wild Charge before I pulled back on that for now due to Electric Terrain existing. It also got back Defog and Pain Split, which means all the forms did too, though Toxic can stay gone for all that I care, and while its physical prowess is actually stronger than its special one now (which only got Weather Ball), it can effectively bluff either of its non-Levitate abilities that hit completely different sides until it attacks and all of its abilities benefit from Trick--hello Iron Ball.
Rotom-Fan: Technically already touched by Slate 02 due to the recent victory of compromise Gale Wings, it doubtless needs more still. So it gets rid of its useless Levitate ability that it was never using again for the apparently beloved Neutralizing Gas as sort of an inversion of the joke it used to be in terms of having a Flying mon having Levitate as an "ability". It also gains Hurricane and Tailwind, both more moves for it to actually (ab)use with Gale Wings, in addition to the Rapid Spin that all Rotom forms (but not base Rotom) get to go with their physicality and to be more supportive. (As such, due to Gale Wing Hurricane, this is the likeliest reason that all of the Rotoms may need to lose Nasty Plot, though maybe they can get Work Up instead, which would benefit base Rotom more at this point anyway.)
Rotom-Frost: The bulkiest (in Snow) but still by far crappiest Rotom gets on the Overcoat train to help with Ice's crippling defensive weaknesses even in the face of Snow boosting Defense, and most of its other additions are effectively window-dressing, with it being the start of all the non-Rotom-Fan forms getting 100% accurate but lower powered STABS in addition to at least one other move and Rapid Spin. Chilly Reception fulfills the "is your refrigerator running?" joke (that it tells) arguably better than Slush Rush would, and unlike the 
Slow-and-Glow siblings, this wouldn't have to wear Boots with Overcoat in use even if it lacks the brokenness of Regenerator. It also benefits the most from Rapid Spin with Refrigerate telling 
Gholdengo to sit down, shut up, and freeze in Hell if it should try to spinblock, and with Refrigerate also being usable with Hyper Voice to be a better Ice Beam that's almost as strong as Blizzard but actually, you know, accurate outside of Snow.
Rotom-Heat: Probably the Rotom form that gets screwed the most in terms of abilities, especially since it didn't get Neutralizing Gas in the end, in part due to being a microwave oven. Flame Body would have made sense, but of its many resistances, most of them lean special outside of Bug, Steel (which just got the non-contact Shrapnel Shot), and arguably Fire (which...can't be burned). Given that it's the form most likely to still use Levitate anyway due to being the only form quad-weak to Ground, I figured I should give it abilities and moves that worked 100% of the time (...in Sun). So Harvest is just an attempt at a possibly interesting non-Grass user of it (since Ripen still sucks) and Electric Surge is both a concession to "VaporeMons can probably have a better Electric Surge user than Pincurchin now" and to force Pure Power Rotom-base teams to still use 
Pincurchin if they want to abuse Rotom's new physical Electric STAB to its maximum power. (Flamethrower and Heal Bell are self-explanatory, though Heal Bell might have instead been Aromatherapy if that hadn't randomly just got deleted wholesale from Gen 9.)
Rotom-Mow: Easily the most straightforward change even if Grassy Pelt existing now makes Grassy Surge even more underwhelming, especially as someone who wasn't ever that impressed with Grassy Surge Rotom-Mow in JolteMons (where, admittedly, 
Rillaboom still had the oppressive Grassy Glide). As such there's nothing to note, since I already just noted the above Aromatherapy deletion, beyond that it's probably the Rotom form that benefits the most from the addition of Weather Ball.
Rotom-Wash: Easily the Rotom form that needs the least help even if too has suffered a small decline of sorts in part due to power creep despite being one of the few Water types that didn't even lose Scald...due to never having it. It will continue to never have it, in part because I feel like giving Rotom-Wash back Pain Split in addition to an anti-Water ability already makes it a griefer mon to Rain even without the chance to randomly get Rain-boosted burns on their sweepers. The 100% accuracy of Surf is honestly already a big buff to it since we've all missed vital Hydro Pumps with it at one point or another, and I can't exactly give it Chilling Water when Chilling Water still...rather sucks. Misty Surge is there mainly just to have another setter (that can actually use its item slot freely) as well to make it so that the Rotom forms cover all Terrains that existed (and were never used) before Psychic Terrain and Psychic Surge were introduced.
(currently RU)
Name: Tsareena
Type: Grass/Fairy
Abilities: Chlorophyll / Queenly Majesty / Pixilate (hidden ability)
New Moves: Body Slam, Choke, Cutting Remark, Heal Bell, Jungle Healing (from Slate 02), Petal Blizzard, Thunderous Kick, and Triple Axel (still technically exists akin to Poltergeist)
Removed Moves: [none]
Justification: I loathe Regenerator, so this is my attempt at buffing Tsareena, who doesn't need that much, especially after Jungle Healing. While a kick-buffing ability (or a Leaf Guard that wasn't horrible) would be nice (but would probably break Quaquaval in the former case), this is making do with what current exists. The additions are self-explanatory for once save for perhaps Petal Blizzard, which finally gives her attacks above 80 BP with 100% accuracy; Body Slam, Thunderous Kick, and Pixilate fulfill the same role, with the last meaning she can actually remove hazards with Rapid Spin even against Gholdengo's stupid self. (Also Tsareena always weirdly felt like it should have been Grass/Fairy or Grass/Fighting, but the latter somewhat steps on 
Breloom--heh--even with 
Decidueye-Hisui no longer Grass/Fighting too now, so....)
(currently RU)
Name: Copperajah
Type: Steel/Water
Abilities: Sheer Force / Overcoat / Heavy Metal (hidden ability)
New Moves: Choke, Defog, Heat Crash, Life Dew, Liquidation, Rain Dance, Soak, and Wave Crash
Removed Moves: [none]
Justification: Every time I am reminded that that this mon still exists, I am surprised anew that part of its flavor insists its water-resistant...while being neutral to Water. Not much else to say about it beyond that, really, except that Overcoat was going to be Sap Sipper before I realized that most Grass mons would still be able to beat the crap out of it anyway and Overcoat covers the main reason for consideration, i.e. Spore. (Also having Steel/Water typing back would be nice.)
