Blundino here's a set I came up with for mew. Traps common hazard/setup mons, namely Ferrothorn and Corviknight (without U-Turn). Speed EV's are to outspeed Max speed Corviknight. Hope you can try it out on a team it suits.
- Magic
Mew @ Leftovers
Ability: Synchronize
EVs: 172 HP / 252 Def / 84 Spe
Bold Nature
- Spikes
- Will-O-Wisp
- Taunt
- Fire Spin