Rate My Hyper Offense Team (National Dex SV)

Question

Tapu Koko @ Light Clay
Ability: Electric Surge
Nature: Jolly
Tera Type: Flying
EVS: 248 HP 252 SPE 8 DEF
Light Screen
Reflect
U-Turn
Taunt

Tapu Koko is my lead 99% of the time. It can set up screens to allow Garchomp and Mega-Gyarados to set up safely, and ko the opponents. Taunt is needed to stop set-up sweepers like Volcarona, Dragonite, other Mega-Gyarados, Swords Dance garchomp, and many others. U turn is to pivot into those sweepers. Electric surge is helpful for Iron Valiant and Iron Moth as well as prevent sleep, if needed.

Garchomp @ Rockium Z
Ability: Rough Skin
Tera Type: Steel OR Fire
Nature: Jolly (yes there are lots of Jollys but it's a hyper offense team what did you expect?)
EVs: 252 ATK 252 SPE, 4 SPD
Stone Edge
Stealth Rock
Swords Dance
Earthquake

Garchomp is the setup/wall breaker of the team, alongside Mega-Gyarados. If they have a ground type, I can use Garchomp as an alternative lead and set up stealth rocks to wear the opponents down as they switch in and let my other teammates sweep. Rockium Z is good for Zapdos, Dragonite, Charizard Mega-Y, Moltres, and Volcarona. Rough Skin can punish Knock off after the Z-move has been used. Tera Steel is for any fairies trying to wear Garchomp down. Tera Fire is good too, since it won't be predictable.

Iron Valiant @ Choice Specs
Ability: Quark Drive
Nature: Timid, Tera Type: Fairy
EVS: 4 DEF, 252 SPA, 252 SPE.
Aura Sphere
Moonblast
Thunderbolt
Psyshock

Iron Valiant is another sweeper which doesn't need to set up to get wincons. With quark drive Speed, it can out speed most non-scarf users. life orb might be better, because of no locking of moves, but specs is more powerful. Thunderbolt to deal with bulky waters such as Toxapex and Alomomola. It can deal with flying types well with thunderbolt, but not Zapdos. If I need to switch out, I can have Gyarados switch in, either mega or non-mega. Psyshock can defeat special walls, such as Clodsire and Galar-Slowking.

Mega-Gyarados @ Gyaradosite
Ability: Mold Breaker
Tera Type: Water (don't need to tera if I'm going mega)
Nature: Jolly
Evs: 252 ATK, 252 SPE, 4 SPD
Earthquake/Substitute
Dragon Dance
Waterfall
Crunch

Mega-Gyarados. A classic. It can set up with dragon dance under dual screens/substitute, which can really pressure the opponent. Its already pretty bulky, so even without investment, it can survive a few hits. Garchomp can switch into electric attacks that threaten Gyarados, but can't stand up against fairies, if Gyarados already mega evolved. Iron moth and Kartana deal with these checks. it can choose between earthquake, or substitute. Earthquake is coverage, and Substitute can block status, like leech seed and toxic. Plus, it can cripple physical attackers with intimidate before mega evolving.

Kartana @ Choice Scarf
Ability: Beast boost
Nature: Jolly. Tera type: Grass
EVS: 252 ATK 252 SPD 4 SPD
Knock Off
Sacred Sword
Smart Strike
Leaf Blade

Kartana serves as a late game cleaner, and a revenge killer. with its MASSIVE 181 attack stat, it can KO anything that isn't invested in defense. With beast boost serving as a semi-Moxie, it can sweep as long as nothing resists its locked move. Knock off can cripple leftovers Pokémon, and heavy-duty boots users, like iron moth, volcarona, and the birds. At a cost. Kartana will most likely be KO'D after they get the item off, due to its very low Special Defense.

Iron Moth @ Heavy Duty Boots
Tera Type: Grass
Ability: Quark Drive
Nature: Timid
EVS: 252 SPA, 4 SPD, 252 SPE
Energy Ball
Sludge Wave
Psychic
Fire Blast

Iron moth benefits from the electric terrain from Tapu Koko a lot. With its already super high SPA, it can ko most threats, after a quark drive boost to SPA. Heavy-duty boots are MANDATORY since it is weak to stealth rock, and spikes. Tera grass energy ball can Suprise threats such as Landorus-T's Earthquake, Water types, and strike back with super effective hits.

If I need to change anything, feel free to tell me. If not, See you!

Comments

Not much for me to say here, but maybe change Kartana’s Tera. Grass is an attack resisted by a lot of types, so maybe Dark instead for a boosted Knock Off, which with Beast Boost can be hard to stop.

 Iron Moth should probably run HP-Ground over Psychic, since Psychic doesn’t cover against much except Toxapex, which HP-Ground can also do. Iron Moth’s STABs are powerful enough for other Mons such as Mega-Lopunny and Tusk. HP-Ground also covers against most importantly Heatran, which would wall Iron Moth otherwise.

Not much to say. Cool team! Hope this helps!

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Keep Garchomp Steel Tera. When defending fire and steel are weak to ground but fire just is more of a risk. While you think it's unpredictable its also just risky. Most water types can carry ice beams or even freeze dry and other ice types can carry water-type moves. A good switch for most dragons is tapu fini which can use both water and ice. Steel makes this better as you have 10 resistances and only 3 weaknesses that you can outspeed most of the time. The only reason you would go fire is for offense which doesn't make sense for Garchomp. Keep rocks because as you said dragonite can be put in which carries multiscale which reduces damage on full hp.

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This team also is very scared of Ground moves once a tera type is poped as there is no way to really trick or outsmart the opponent unless that mon is defeated. Other than that its pretty good and is very like you said offense. Just always remember you are not immortal but you are powerful.