Gen 9 NU Unburden
Sceptile @ Psychic Seed / Grassy Seed
Ability: Unburden
Tera Type: Flying
EVs: 240 HP / 252 Atk / 16 Spe
Adamant Nature
- Swords Dance
- Leaf Blade
- Acrobatics
- Earthquake / Drain Punch / Low Kick
Since Sceptile can be used in NU, here's an Unburden set it can use on Terrain teams in Gen 9 NU. Swords Dance is used to boost Sceptile's attack stat so it can become a scary sweeper once it gets off a Swords Dance or possibly two. Leaf Blade is Sceptile's strongest physical Grass STAB, being able to threaten Pokemon such as Palossand, Mudsdale, Tauros-Paldea-Aqua, and Iron Thorns. Acrobatics is a powerful move that takes advantage of Sceptile consuming the corresponding speed, allowing Sceptile to hit Pokemon such as Tsareena and Brute Bonnet super effectively, as well as hitting Pokemon who resist Leaf Blade hard. Earthquake is a nice coverage move to hit Steel-types such as Copperajah, Klefki, Duraludon, and Registeel super effectively. Earthquake is also nice against Toxtricity. If you use Sceptile on Grassy Terrain, then you need to use either Drain Punch or Low Kick. Drain Punch lets Sceptile recover HP and wear down Duraludon, though it is a bit worse at breaking through Copperajah and Registeel. If you don't care about breaking past Duraludon easily when using Sceptile on Grassy Terrain teams, then you can use Low Kick to break past Copperajah and Registeel. Psychic Seed is used for Psychic Terrain teams, and Grassy Seed is used for Grassy Terrain teams. Tera Flying is used to make Acrobatics a STAB move, making it more powerful.
252 Attack EVs with an Adamant Nature allow Sceptile to hit as hard as possible. This set uses 240 HP EVs since Sceptile doesn't need that much speed to outspeed every relevant Choice Scarf user in the tier once Sceptile consumes its terrain seed. 16 Speed EVs are used to put Sceptile to 280 speed, making it 560 when Unburden activates. (Plus, 280 speed looks nice on the teambuilder)
Important Note:
Since this set has Tera Flying, you should keep in mind that once Sceptile uses its Tera, it loses the benefits of Psychic Terrain (protection from priority) and Grassy Terrain (a boost to Leaf Blade). Basically, if you want Sceptile to have the terrain benefits, you should try to preserve your Tera unless you absolutely need it to win the game.