Use Joey!!!

Buzzwole @ Fightinium Z
Ability: Beast Boost
EVs: 88 HP / 252 Atk / 168 Spe
Adamant Nature
- Poison Jab
- Substitute
- Ice Punch
- Focus Punch

Manectric-Mega @ Manectite
Ability: Lightning Rod
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Volt Switch
- Thunderbolt
- Flamethrower
- Hidden Power [Ice]

Empoleon @ Leftovers
Ability: Torrent
EVs: 252 HP / 68 Def / 188 SpD
Careful Nature
- Scald
- Defog
- Knock Off
- Toxic

Azumarill @ Choice Band
Ability: Huge Power
EVs: 88 HP / 252 Atk / 168 Spe
Adamant Nature
- Liquidation
- Ice Punch
- Aqua Jet
- Play Rough

Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 244 HP / 76 SpD / 188 Spe
Jolly Nature
- Stealth Rock
- Roost
- Earthquake
- Taunt

Latias @ Choice Scarf
Ability: Levitate
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Psyshock
- Healing Wish
- Thunderbolt