I'd advise running this ninjask set:
Ninjask @ Leftovers
Trait: Speed Boost
EVs: 252 HP / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Substitute
- Protect
- Swords Dance
- Baton Pass
probably as a lead. It's the one I use for my BP team. If there is no taunter (especially thundurus who wrecks this with priority taunt), and no pseudo-hazer (roar, whirlwind) this is a guaranteed +6 speed boost. just start with a sub. If they use stealth rock/spikes/non-damaging moves/unable to break sub, use swords dance, then once they start attacking, just switch between protect and sub.
Ninjask @ Leftovers
Trait: Speed Boost
EVs: 252 HP / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Substitute
- Protect
- Swords Dance
- Baton Pass
probably as a lead. It's the one I use for my BP team. If there is no taunter (especially thundurus who wrecks this with priority taunt), and no pseudo-hazer (roar, whirlwind) this is a guaranteed +6 speed boost. just start with a sub. If they use stealth rock/spikes/non-damaging moves/unable to break sub, use swords dance, then once they start attacking, just switch between protect and sub.