Klefki @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Play Rough  
- Thunder Wave  
- Toxic  
- Substitute  

Rayquaza-Mega @ Choice Band  
Ability: Air Lock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- V-create  
- Waterfall  
- Extreme Speed  

Dialga @ Shuca Berry  
Ability: Pressure  
EVs: 252 HP / 112 Def / 132 SpA / 12 Spe  
Modest Nature  
IVs: 0 Atk  
- Draco Meteor  
- Fire Blast  
- Toxic  
- Stealth Rock  

Arceus @ Lum Berry  
Ability: Multitype  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Extreme Speed  
- Earthquake  
- Shadow Claw  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Overheat  
- Precipice Blades  
- Dragon Tail  
- Stealth Rock  

Quagsire @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Earthquake  
- Counter  
- Toxic  
- Recover