Stakataka @ Leftovers
Ability: Beast Boost
EVs: 252 HP / 4 Atk / 252 SpD
Sassy Nature
IVs: 0 Spe
- Gyro Ball
- Rock Blast
- Stealth Rock
- Toxic / Protect
Pidgeot-Mega @ Pidgeotite
Ability: No Guard
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Hurricane
- Refresh
- Work Up
- Roost
I wouldn’t really recommend this Pidgeot set though, as very few (none) competent stalls have been swept by this without an absurd amount of support / luck due to almost all of them having one of Aero / Aggron / Nihilego / Staka and probably some other stuff I’m missing aswell. A better means of using Pidgeot as a tool against stall would be to use the below set alongside a threatening fighting type breaker such as Terrakion or Infernape.
Pidgeot-Mega @ Pidgeotite
Ability: No Guard
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hurricane
- Heat Wave
- U-turn
- Roost
You can opt for Hidden Power Ground or other fancy stuff in the last slot if you want.