Rayquaza-Mega @ Life Orb  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpA / 252 Spe  
Lonely Nature  
- Dragon Ascent  
- V-create  
- Extreme Speed  
- Draco Meteor  

Arceus-Steel @ Iron Plate  
Ability: Multitype  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Recover  
- Iron Defense  
- Judgment  

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

Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 252 Def  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Transform  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 236 SpD / 20 Spe  
Careful Nature  
- Rest  
- Toxic  
- Stealth Rock  
- Fire Punch  

Marshadow @ Marshadium Z  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Bulk Up  
- Shadow Sneak  
- Close Combat  
- Spectral Thief