https://pokepast.es/c0660f1294c86306
CB Poison Touch Sneasler + MLop BO
Sneasler:
Sneasler @ Choice Band
Ability: Poison Touch
Tera Type: Fighting
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dire Claw
- Close Combat
- U-turn
- Shadow Claw
Choice Band Sneasler is a fearsome breaker and potential wincon, threatening Metagame staples such as Heatran, Tapu Lele, Ferrothorn, utility Torn-T, and Iron Valiant while threatening to cripple switch-ins with a chance to poison from Poison Touch or Sleep/Paralysis from Dire Claw.
Dire Claw and CC are strong STAB options, U-turn keeps momentum and is great for spreading poison, while Shadow Claw hits Gholdengo. Tera Fighting makes Sneasler's CC especially nuclear and hard to switch in to.
Mega Lopunny:
Lopunny @ Lopunnite
Ability: Limber
Happiness: 0
Tera Type: Normal
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Close Combat
- U-turn
- Fake Out
- Frustration
Mega Lopunny is another fearsome breaker, and works well together with Sneasler as they can pivot around and wear down their shared checks such as Lando-T and Toxapex. Mega Lopunny deals with Tapu Koko and Clodsire for Sneasler, while Sneasler's poison works well in conjunction with Fake Out. Other Pokémon in the team, such as Glowking and Kyurem, really appreciate Lopunny's ability to absorb Knock Off. Mega Lopunny also really helps the team's matchup into faster, more offensive teams thanks to its speed and Fake Out.
CC and Frustration are strong STABs, with Frustration over Return for the rare Ditto Matchup, Fake Out is good chip to put opponents in range of one of the STABs, while U-turn turns Lopunny into a great Pivot.
Galarian Slowing:
Slowking-Galar @ Assault Vest
Ability: Regenerator
Tera Type: Water
EVs: 252 HP / 136 Def / 120 SpD
Calm Nature
- Sludge Bomb
- Future Sight
- Flamethrower
- Scald
Both Sneasler and Mega Lopunny are walled by Toxapex and threatened by Zamazenta and Booster Energy Iron Valiant, but Glowking solves these problems, while Regenerator helps to provide longevity to the team. Glowking also switches in to and threatens Mega Diancie, which can be threatening otherwise.
The given EV spread allows Glowking to avoid the 2HKO from Specs Pult's Shadow Ball, with the rest of the investment into physical bulk. Future Sight hits the aforementioned checks/counters to Sneasler and MLop, making them even harder to switch in to, Sludge Bomb is for STAB, while Flamethrower hits Steel Types and no physical attacker wants to take a Scald. Glowking is rarely used for Tera, but Tera Water can be useful against Rain and removes its Dark and Ground Weaknesses. Glowking really appreciates MLop's ability to deal with Pursuit Kingambit, which is a really bad matchup for it otherwise.
Kyurem:
Kyurem @ Heavy-Duty Boots
Ability: Pressure
Tera Type: Fairy
EVs: 56 HP / 200 SpA / 252 Spe
Timid Nature
- Substitute
- Freeze-Dry
- Earth Power
- Roost
The team so far struggles to threaten Lando-T, and can struggle against a well-played Toxapex, but Kyurem really helps in both of these matchups.
Freeze-Dry KOs Landorus and heavily damages Toxapex, providing (almost) perfect coverage alongside Earth Power, which hits Heatran. Substitute means that more passive Pokémon can't touch Kyurem, and works well with Pressure draining PP, while Roost provides Longevity. The EV spread means Kyurem's substitutes aren't broken by Seismic Toss, with the rest for offensive potential, while Tera Fairy helps in the Zamazenta , Urshifu, and Dragapult matchups, and HDB means that Kyurem can reliably come in over the course of a battle.
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
Kingambit is Kingambit. Anything that manages to survive Sneasler + MLop + Future Sight is unlikely to survive Kingambit, and it is also a great counter to Pult.
I've gone with the Swords Dance set over the Pursuit set as it just becomes so threatening late-game and, with Tera Flying, it can actually threaten supposed Checks to it such as Tusk, Lando-T, and Zamazenta, and with Supreme Overlord over Defiant as I feel it's less matchup dependent.
Landorus:
Landorus-Therian @ Rocky Helmet
Ability: Intimidate
Tera Type: Water
EVs: 252 HP / 252 Def / 4 Spe
Impish Nature
- Earthquake
- U-turn
- Defog
- Stealth Rock
Landorus rounds off the team with Hazard Control and also helps the team deal with Zamazenta, Mega Lopunny and Kingambit, as well as being a Ground Type to block Volt Switch or really helping the Rain matchup with Tera Water, which turns its weaknesses into resistances.
The EVs give Lando-T max physical bulk, working very well with Intimidate and Rocky Helmet, with Stealth Rock and Defog providing Hazard Control while Earthquake stops it from being too passive, and U-turn makes it a valuable slow pivot to bring in Sneasler and MLop.