Mudsdale @ Chesto Berry  
Ability: Stamina  
Shiny: Yes  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Roar  
- Toxic  
- Rest  
- Earthquake  

Aegislash @ Leftovers  
Ability: Stance Change  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Toxic  
- Gyro Ball  
- Shadow Sneak  
- King's Shield  

Rayquaza-Mega @ Choice Band  
Ability: Delta Stream  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Extreme Speed  
- Outrage  
- V-create  

Skarmory @ Rocky Helmet  
Ability: Sturdy  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Defog  
- Toxic  
- Whirlwind  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Stealth Rock  
- Toxic  
- Rest  
- Earthquake  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 240 HP / 252 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Recover  
- Toxic  
- Refresh