Italic and Bold = I recomend to change.
Hippowdon @ Leftovers
Trait: Sand Stream
EVs: 252 SpDef / 252 HP / 4 Atk
Careful Nature (+SpDef -SpAtk)
- Earthquake
- Slack Off
- Stealth Rock
- Ice Fang
I prefer go with more SpDef because basically Water-, Grass-, and Ice-types use SpAtks like Surf, Giga Drain and Ice Beam respectively. Careful boosts more SpDef as you can see. Earthquake gains STAB. Ice Fang may take Flying-types pokemons and Air Baloon and Levitating pokemons too.
Scizor @ Leftovers
Trait: Technician
EVs: 252 HP / 132 SpDef / 124 Def
Adamant Nature (+Atk -SpAtk)
- Bullet Punch
- Roost
- Swords Dance
- Bug Bite
I prefer defensive to raise his survivability and go Swords Dancing to raise his Atk. Bug Bite gains STAB and can eat the berry of the oponents.
Staraptor @ Life Orb
Trait: Reckless
EVs: 252 Atk / 252 Spd / 4 Def
Adamant Nature
- Brave Bird
- Close Combat
- Roost
- Double-Edge
With Reckless Double-Edge is fatalic like Brave Bird.
Jellicent @ Leftovers
Trait: Water Absorb
EVs: 252 HP / 252 SDef / 4 SAtk
Mild Nature
- Recover
- Toxic
- Protect
- Giga Drain
OK. But I prefer use Nidoking:
Nidoking @ Life Orb
Ability: Rivalry
Nature: Adamant (+Atk -SpAtk)
- Dragon Tail
- Attract
- Earthquake
- Fire Punch
Dragon Tail forced the oponent switch dealing a bit of damage. Good with Stealth Rock and Spikes in the oponent's field. Attract is for female pokemons that Rivalry is bad. Earthquake gains STAB and is his main move. For Grass-, Bug-, and Flying-types that Earthquake is bad use Fire Punch.
Gengar @ Leftovers
Trait: Levitate
EVs: 252 SAtk / 252 Spd / 4 SDef
- Confuse Ray
- Sludge Wave/Bomb
- Focus Blast
- Shadow Ball
Sludge Wave gains STAB. If you can't get it use Sludge Bomb. Focus Blast is for Dark-types.
Crustle @ Wide Lens
Trait: Sturdy
EVs: 252 Atk / 252 Def / 4 HP
Adamant Nature
- Shell Smash
- X-Scissor
- Earthquake
- Rock Blast
Go with X-Scissor. It gains STAB too and have better PPs. But I prefer Ferrothorn with this moveset:
Ferrothorn @ Leftovers
Ability: Iron Barbs
Nature: Brave (+Atk -Spd)
EVs: 252 HP / 88 Def / 168 SpDef
- Leech Seed
- Spikes
- Ingrain
- Gyro Ball
Leech Seed, Ingrain and Leftovers... It heals 3/16 of HP at the end of each turn. Spikes is other entry hazard doing damage to the oponent upon entering the battle. Gyro Ball gains STAB and helps if the user is under the effects of Taunt.