ShootingStarmie
Bulletproof
While they do play different roles, I diffently would say this set is outclassed by SD Acrobatics Scizor. SD Acrobatics Scizor is sweeping the same Pokemon, bluffs the banded set, and beats Jellicent, Volcacrona (thinking you're banded), and Tentacruel. Bug Bite isn't hitting anything harder other than Hippowdon and Psychic types, which shouldn't be too big of a deal. I would definitely mention the benefits of Jolly > Adamant, but just to make it brief. Jolly out speeds SpDef Heatran, most Jellicent, and most Tentacruel.
Scizor (F) @ Life Orb
Trait: Technician
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- Bullet Punch
- Swords Dance
- Super Power
- Bug Bite
Role: Physical Sweeper
What It Does: Offensive SD Scizor is absolutely fantastic in this metagame. It is able to set up rather easily, especially while forcing switches due to an expected Choice Band. Whether you intend to blow holes in the opposing team or even clean sweep, with only small amounts of support Scizor can get the job done. Bullet Punch offers an incredibly strong priority move that is capable of 1hkoing almost anything faster than scizor that doesn't resist (and is still doing around 50% to bulky resists such as keldeo). The other two moves decimate any pokemon with the misfortune of being slower than scizor. Bug Bite is a clean 2hko on Hippowdon. Superpower can 2hko Skarm after rocks. Due to the absurd power level combined with such a strong priority move, it is very difficult to stop scizor.
Good Teammates: Scizor greatly appreciates the presence of other offensive mons, including those that share similar counters, so as to maintain offensive pressure and wear down the sturdier pokes on the opposing team. Even dugtrio support is welcome to weaken things like keldeo to the point of breaking, or eliminate heatran.
What Counters It: As mentioned, keldeo is one of the largest problems, though it can only come in after a kill. Scizor can't do much to it unless it is sufficiently weakened and keldeo can ko in return. Heatran with sufficient speed investment spells doom for Scizor, though Tran is easily disposed of if they are a defensive variant. Scarf Magnezone also have an easy win against Scizor.
I think your list of team mates is pretty short to be honest, and isn't very informative. Gothitelle is a much better partner than Dugtrio, as Gothitelle can trap most physical walls like Skarmory, Hippowdon, and Gliscor, which can all be troublesome for SD Scizor. Obviously Rotom-W is the best partner, as it beats Gyarados, Skarmory, Gliscor, and Hippowdon, while Scizor beats special walls that switch into Rotom-W, like Chansey, Celebi, and Amoonguss.
Your list of counters is also pretty small. Hippowdon, Skarmory, offensive Heatran, Jellicent, Tentacruel, and Gyarados are all solid checks / counters, but you can go more into detail if you wish.