Mew @ Psychium Z
Ability: Synchronize
EVs: 252 HP / 52 Def / 204 SpD
Sassy Nature
IVs: 0 Atk / 0 Spe
- Psychic
- Hypnosis
- Trick Room
- Soft-Boiled

252+ Atk Technician Scizor-Mega Bug Bite vs. 252 HP / 52 Def Mew: 338-402 (83.6 - 99.5%) -- guaranteed 2HKO
Note that you DO NOT live z moves from most hard hitters so dont stay in

Mew @ Leftovers
Ability: Synchronize
EVs: 252 HP / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Will-O-Wisp
- Tailwind / Trick Room
- Transform / Soft-Boiled

Mew @ Life Orb
Ability: Synchronize
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psychic
- Ice Beam
- Flamethrower
- Protect / Soft-Boiled