What about...
Reuniclus @ Flame Orb
Ability: Magic Guard
EVs: 252 HP / 252 SpA / 4 Spe
Modest Nature (+SpA, -Atk)
- Trick
- Psychic
- Focus Blast
- Recover / HP Fire
Lets Reuniclus cripple physical attacker switch-ins such as Scizor and Tyranitar whilst also protecting it from Sleep status. It can also make pretty good use of any item it gets, with Leftovers and Life Orb providing obvious benefits. Eviolite users like Chansey are severely punished, and even if Reuniclus gets a Choice Band, a burned itemless Scizor will likely U-Turn out, letting you Trick the Choice Band onto something else on their team, crippling two pokémon at once.

Reuniclus @ Flame Orb
Ability: Magic Guard
EVs: 252 HP / 252 SpA / 4 Spe
Modest Nature (+SpA, -Atk)
- Trick
- Psychic
- Focus Blast
- Recover / HP Fire
Lets Reuniclus cripple physical attacker switch-ins such as Scizor and Tyranitar whilst also protecting it from Sleep status. It can also make pretty good use of any item it gets, with Leftovers and Life Orb providing obvious benefits. Eviolite users like Chansey are severely punished, and even if Reuniclus gets a Choice Band, a burned itemless Scizor will likely U-Turn out, letting you Trick the Choice Band onto something else on their team, crippling two pokémon at once.