UU team for Joey

Aggron-Mega @ Aggronite
Ability: Heavy Metal
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Heavy Slam
- Ice Punch
- Earthquake
- Fire Punch

Empoleon @ Leftovers
Ability: Torrent
EVs: 252 HP / 132 Def / 80 SpA / 44 SpD
Modest Nature
IVs: 0 Atk
- Defog
- Scald
- Ice Beam
- Roar

Latias @ Choice Scarf
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Draco Meteor
- Ice Beam
- Psychic
- Healing Wish

Marowak-Alola @ Thick Club
Ability: Lightning Rod
EVs: 248 HP / 8 Atk / 252 SpD
Careful Nature
- Flare Blitz
- Knock Off
- Will-O-Wisp
- Stealth Rock

Hydreigon @ Choice Scarf
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Dark Pulse
- Draco Meteor
- Fire Blast
- U-turn

Mamoswine @ Life Orb
Ability: Thick Fat
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Ice Shard
- Icicle Crash
- Earthquake
- Superpower