Miltank @ Normalium Z  
Ability: Thick Fat  
EVs: 248 HP / 116 Atk / 48 SpD / 96 Spe  
Adamant Nature  
- Double-Edge  
- Milk Drink  
- Power-Up Punch  
- Toxic  

Abomasnow-Mega @ Abomasite  
Ability: Snow Warning  
EVs: 252 Atk / 240 SpA / 16 Spe  
Naughty Nature  
- Blizzard  
- Wood Hammer  
- Ice Shard  
- Earthquake  

Mesprit @ Choice Scarf  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- U-turn  
- Healing Wish  
- Psychic  
- Ice Beam  

Slowbro @ Colbur Berry  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Psychic  
- Toxic  
- Slack Off  

Diancie @ Leftovers  
Ability: Clear Body  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
- Diamond Storm  
- Moonblast  
- Earth Power  
- Stealth Rock  

Whimsicott @ Choice Specs  
Ability: Prankster  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Energy Ball  
- Moonblast  
- Psychic  
- U-turn