Scizor-Mega @ Scizorite
Ability: Technician
EVs: 252 HP / 216 Atk / 40 SpD
Adamant Nature
- Bullet Punch
- Bug Bite
- Swords Dance
- Roost

+1 252 SpA Adaptability Porygon-Z Thunderbolt vs. 252 HP / 40 SpD Mega Scizor: 290-342 (84.3 - 99.4%) -- guaranteed 2HKO

Scizor-Mega @ Scizorite
Ability: Technician
EVs: 252 HP / 124 Atk / 40 SpD / 92 Spe
Adamant Nature
- Bullet Punch
- Bug Bite
- Knock Off
- Protect

Outspeeds 0 Spe Rotom Formes, Max Attack, same pz calc as above