Metagross needs no Def EV's. So I would give all of it to speed.
Metagross @ Leftovers/Leichi Berry
Trait: Clear Body
EVs: 140 HP / 252 Atk / 118 Spd
Adamant Nature (+Atk, -SAtk)
- Agility
- Earthquake
- Explosion
- Meteor Mash
The extra speed will prove to be assisting and Leichi Berry is worth consideration.
Fine.
Heracross is not a Leftovers type pokemon. It's born into combat.
No...if the berry activates and you see skarm come in, expect roar or drill peck...so you'd either switch or kinda be forced to...bye bye salac boost. Pinch berries only work on certain pokemon, heracross not being one of them.
Heracross (M) @ Salac Berry
Trait: Guts
EVs: 252 Atk / 6 HP / 252 Spd
Adamant Nature (+Atk, -SAtk)
- Brick Break
- Megahorn
- Rock Slide/Endure
- Swords Dance
Endure is made of epic fail *coughTTarcough* and I'd still run CBcross, as I've used both sets and the CB hera is far superior, but oh well...
Starmie @ Leftovers
Trait: Natural Cure
EVs: 252 Spd / 252 SAtk / 6 SDef
Timid Nature (+SAtk, -Atk)
- Ice Beam
- Thunderbolt
- Recover
- Surf/Rapid Spin
A Bolt Beam set is usually what Starmies needs. The speed will be enough to combat Gengar.
Who leaves gengar in against starmie? surf over recover.