[OU] Yes. Rubber Soul

Seismitoad (M) @ Leftovers
Ability: Water Absorb
EVs: 248 HP / 240 Def / 20 SpD
Bold Nature
IVs: 0 Atk
- Stealth Rock
- Scald
- Refresh/Earth Power
- Toxic

Skarmory (F) @ Rocky Helmet
Ability: Sturdy
EVs: 248 HP / 236 SpD / 24 Spe
Impish Nature
- Spikes
- Iron Head
- Roost
- Whirlwind

Clefable (F) @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 160 Def / 96 SpD
Calm Nature
IVs: 0 Atk
- Calm Mind
- Moonblast
- Flamethrower
- Soft-Boiled

Tyranitar (M) @ Choice Band
Ability: Sand Stream
EVs: 56 HP / 252 Atk / 4 Def / 196 Spe
Adamant Nature
- Pursuit
- Stone Edge
- Crunch
- Ice Punch

Gengar (M) @ Choice Scarf
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Shadow Ball
- Sludge Wave
- Focus Blast
- Trick

Latias-Mega @ Latiasite
Ability: Levitate
EVs: 248 HP / 32 Def / 12 SpA / 216 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Ice Beam
- Roost
- Thunder Wave