Team
Voting ban on Skymin.
In brief,
(1) it singlehandedly eliminates hyperoffense and offense as viable playstyles
(2) it is over-centralizing insofar as every balance build now needs an unaware mon in the defensive core
Honestly, did not run into the diversity of Skymin sets that I would have expected. Most common set I saw was Braviary-Hisui!Skymin and one contrary set. Wish we had a little bit more time to run the suspect but it is what it is. Between a mix of experience and theory, I'll break down my thoughts on Skymin by set.
Special
Shaymin-Sky @ Leftovers
Ability: Tinted Lens
Tera Type: Grass
EVs: 172 Def / 84 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Substitute
- Hurricane
- Roost
If you're going to run a pure special set, I think it's optimal to run substitute so you don't just get phased out by every RegenAV Dragon Tail under the sun. Specifically, 108 Def EVs prevent U-Turn and Hoodra's dtail from breaking sub. This set is still going to have trouble with Snorlax w/ body slam or Mienshao vests with Pjab. What's nice about Hoot!Skymin is that, unlike Enamorous, it doesn't need dual dance with Agility because it already outspeeds almost the entire unbooster tier save Barraskewda and Jolteon.
Shaymin-Sky @ Heavy-Duty Boots / Leftovers / Life Orb
Ability: Serene Grace
Tera Type: Grass
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Air Slash
- Seed Flare
- Earth Power
- Healing Wish / Substitute
Skymin as itself is really disadvantaged in this game due to the prevalence of AVRegen. Even if you get the -2 Spdef drop on Hoodra switching into a seed flare, you only do 37-44% on the subsequent Earth Power, giving them ample opportunity to pivot netting only a -4-10% drop in HP when you factor in Regenerator. Seed Flare on a -2 AVLax is doing 32-38% and that's if your hitting an 80% accurate move. You can try to cheese them with a couple Air Slash flinches, but then you're just being an asshole. There's also the issue of spamming a move with only 8 PP; even if you are hitting your Seed Flares and getting your SpDef drops, over the course of a game an RegenAV can stall you out of your best move.
Mixed
Gallade / Hisui-Samurrott!Shaymin-Sky @ Heavy-Duty Boots / Leftovers
Ability: Sharpness
Tera Type: Grass
EVs: 8 Atk / 252 SpA / 252 Spe
Naive Nature
- Taunt / Substitute / Encore
- Air Slash
- Sacred Sword
- Destiny Bond / Will-O-Wisp / Flip Turn
As is true for most pokemon in Inh, the mixed sets for Skymin are most threatening. Sharpness Sacred Sword 2HKOs your two most common RegenAV between Lax and Hoodra. Sharpness Air Slash provides you with a 112.5 BP 95% accurate move with a 30% chance of flinch, becoming one of the best and most spammable attacks in the game. Flying / Fighting has excellent neutral coverage with the only relevant resists being Zapdos and Gholdengo. If you're really worried about Ghold you can run Shadow Ball. Instead of Gallade, you can inherit from hamurrott to get Flip Turn, Ice Beam etc.
Kleavor!Shaymin-Sky @ Heavy-Duty Boots
Ability: Sharpness
Tera Type: Grass
EVs: 40 Atk / 216 SpA / 252 Spe
Naive Nature
- U-turn
- Air Slash
- Stone Axe
- Close Combat
Same principle, although you need a little bit of Atk investment to 2hko your targets with CC instead of Sacred Sword. Role compression w/ stealth rocks is a huge boon for offense and bulky offense teams.
Lurantis!Shaymin-Sky @ Leftovers
Ability: Contrary
Tera Type: Grass
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Taunt / Substitute / Synthesis / Poison Jab / Facade
- Knock Off
- Superpower
- Leaf Storm
I don't care what anyone says, this is Sykmin's most problematic set. Between it's speed and Contrary boosts, this set singlehandedly eliminates offense as a viable playstyle in Inh. Because of it's defense boosts and unparalleled base Speed, it can be a real bitch to revenge kill. After a couple leaf storms, this mon is OHKO'ing resists. If you feel like this set is not a problem, it is because you are running unaware Corv, Ghold, Fez etc. and in turn, you are only running those mons because of this set. In the environment of a suspect test, everyone is running the best stuff to counter the suspected mon because it makes it easy to ladder and achieve reqs. As a result, people's view of the pokemon becomes skewed by a two-week sample where every team is bringing the counter. Think this makes people blind to seeing how centralizing a pokemon or set really is. When the suspect test is over and the meta returns to a steady-state, do you really want to run Quag!Corv or Skeledirge!Ghold on every single team? I do not.
One counter that I expect to hear is that Contrary Sneasler, Urshifu etc. are just as threatening - they are not. This is because they only have one route to achieve boosts, Superpower. Any bulky ghost can put a stop to this. Separately, because they are dependent on a physical attack for boosting, they are susceptible to flame body, rocky helmet, etc. which can disrupt an attempt at a sweep. Skymin can break through bulky ghosts, even gholdengo, with Leaf Storm spam.
Defense / Pivot
Torn-T!Shaymin-Sky @ HeavyDutyBoots
Ability: Regenerator
Tera Type: Grass
EVs: 248 HP / 244 Def / 16 Spe
Timid Nature
- Taunt
- U-turn
- Knock Off
- Hurricane
Squak!Shaymin-Sky @ HeavyDutyBoots
Ability: Intimidate
Tera Type: Grass
EVs: 248 HP / 244 Def / 16 Spe
Timid Nature
IVs: 0 Atk
- Taunt
- Roost
- Hurricane
- Parting Shot
I've not seen anyone use these sets but I think they have a niche purely as a check against to most dominant wall breaker in the tier, Urshifu-Water. That thing is so strong that Water Absorb Annihilape gets regular usage when otherwise that would be considered a shitmon. Fast taunt also acts as a stallbreaker.