Mega Scizor
Scizor @ Scizorite
Ability: Light Metal
Tera Type: Bug
EVs: 248 HP / 112 Def / 128 SpD / 20 Spe
Impish Nature
- Swords Dance
- Bullet Punch
- U-turn
- Roost
What Mega Scizor does
Mega Scizor is currently a strong force in the meta, switching into and threatening offensive threats such as Iron Valiant, Mega Lopunny, Baxcalibur, Weavile, and Kartana, sitting comfortably on gluemons such as Lando-T and Great Tusk to use them as setup fodder while forcing out Mega Diancie, as well as being able to threaten defensive Pokémon such as Clodsire, non-tera Garganacl, with U-turn allowing it to switch out of unfavourable matchups such as Gholdengo, Skeledirge, and Rotom-W and keep momentum.
The set
The given EV spread avoids the 2HKO from Mega Lopunny's CC after Stealth Rock, with Bullet Punch 2HKOing after the defence drops, with the SpD investment allowing Scizor to better switch into Valiant and Lele and the Spe letting it outspeed uninvested Heatran. With the offensive nature of the current meta, a strong priority option is pretty much necessary, and Scizor provides this with a technician-boosted Bullet Punch, making it an excellent revenge killer. U-turn maintains momentum and brings in my offensive threats. Swords Dance makes Scizor into a potent wincon, while Roost provides longevity - these 2 moves form a combination which allows Scizor to blow through Lando-T/Tusk cores mid-game and makes it a fearsome late-game presence.
Mega Scizor in this team
This team is built around abusing VoltTurn, and Scizor's U-turn is an important part of this. Its ability to switch into Mega Lopunny and Valiant helps the team hugely, as few of its members enjoy taking hits from these, and the threat it poses to Mega Diancie, which is otherwise a large threat, is greatly appreciated. Without Scizor's 4x fairy resistance and Bullet Punch, this team could easily fold to Lele, Valiant, or Mega Diancie. Scizor helps Tornadus greatly, dealing with Clodsire and Weavile, which would otherwise be able to wall and revenge kill it respectively. Though Scizor's synergy with Tornadus is strong, its closest partner in this team is arguably Rotom-W, the two of them forming an excellent VoltTurn core to chip and pivot around their checks, as well as to bring in the team's offensive threats in Pult, Tornadus, and Kingambit.
Dragapult
Dragapult @ Heavy-Duty Boots
Ability: Infiltrator
Tera Type: Ghost
EVs: 252 SpA / 4 SpD / 252 Spe
Hasty Nature
- Will-O-Wisp
- Hex
- Dragon Darts
- U-turn
What Dragapult does
Dragapult is an excellent offensive pivot which provides utility with Will-O-Wisp, crippling offensive threats such as Zamazenta, Mega Lopunny, and Kingambit, avoiding Kingambit's Sucker Punch. One of Dragapult's main selling points is that it is so versatile, forcing your opponent to play a risky guessing game - WispHex, Specs, and DDance all having different counterplay. Pult spreads status, aided by its ability to pivot, and can be very threatening late-game against weakened teams.
The set
The EV spread gives maximises Pult's offensive power, with an unresisted Hex 2HKOing most of the meta when burned, and becoming even more powerful with Tera Ghost, though I rarely choose to Tera Dragapult. (Pretty much only Pex, Heatran and Ferrothorn avoid the guaranteed 2HKO.) It's speed is also maximised, ensuring that it is able to be a reliable revenge killer along with its utility, as well as giving a valuable fast U-turn. Though Hex can deal colossal damage, DDarts is needed to dent specially bulky Mons such as Clodsire. Boots are used so that it can continue pivoting without needing to worry about hazards. Infiltrator means that Dragapult can hit opposing Pult behind a Sub, as well as being a hard counter to Sub Gliscor.
Dragapult in this team
As another pivot, Dragapult keeps up momentum and synergises well with the other pivots in the team, especially Rotom-W, which deals with Heatran well, as well as chipping Toxapex. Dragapult greatly appreciates Scizor's 4x Fairy resistance and can take Fighting attacks for Kingambit, while Kingambit takes Dragon and Dark attacks for it. Dragapult further helps Kingambit by spreading status, weakening teams to help Kingambit clean late-game. Against Ting-Lu, Clodsire, and Toxapex, Dragapult can bring in Kingambit and Lando-T to threaten them or burn them to reduce their longevity.
Kingambit
Kingambit @ Black Glasses
Ability: Supreme Overlord
Tera Type: Flying
EVs: 116 HP / 252 Atk / 140 Spe
Adamant Nature
- Knock Off
- Iron Head
- Sucker Punch
- Swords Dance
What Kingambit does
Kingambit is almost certainly the best Pokémon in the meta right now and, I would argue, a must-include on any team other than perhaps hard stall. With its combination of potential sets, a dynamic STAB combo, and access to priority, it can threaten almost any team. It excells most as a late-game cleaner thanks to Supreme Overlord, but can also be valuable mid-game as it threatens Skeledirge, Clodsire, Garganacl, Gholdengo, and Mega Diancie, as well as being able to reliably switch in to and threaten Dragapult.
This thing is kinda broken but I'm not complaining.
The set
140 Spe EVs allows Kingambit to outspeed standard Skeledirge sets, though with the current state of speed wars, this may need to go up, while we go for max offensive threat with 252 Atk EVs. Knock Off is very useful mid-game, as few would-be switch-ins such as Rotom-W, Toxapex, Torkoal, and Zamazenta like losing their item, and it also serves as a powerful STAB when cleaning late game, especially when boosted by Black Glasses and Supreme Overlord, which I have chosen over Defiant as I feel that it's less of a matchup fish, and allows Kingambit to become absurdly powerful very quickly. At +4 On Supreme Overlord, even some of the most physically bulky Mons in the meta in Pex, Ferrothorn, and Corviknight risk the 3HKO by Knock Off, and at +5 they are certainly 3HKOed. Offensive Mons not called Iron Valiant fear a Sucker Punch, while Valiant fears Tera Flying + Iron Head, as do Mega Lopunny, Tusk, and Lando-T, all of which would otherwise check it. When you add Swords Dance into the mix, it becomes nigh unstoppable.
Kingambit in this team
Kingambit is this team's main wincon, able to come in late-game with Supreme Overlord boosting it and shatter weakened teams - once all the pivoting and statusing is done, in comes Kingambit and cleans up. It greatly appreciates status support from its teammates, with Rotom-W's paralysis allowing to outspeed would-be revenge killers, Lando-T's Toxic bringing Mons which would not otherwise be OHKOed such as Zapdos and opposing Lando-T into OHKO or 2HKO range, and Pult's Will-O-Wisp making sure it beats opposing Kingambit. It also switches reliably into Dragapult and threatens Mega Diancie, both of which are otherwise problematic for the team, while dealing with Skeledirge and Gholdengo for Mega Scizor.
I'll continue this in the comments as it's too big.