Rayquaza @ Focus Sash  
Ability: Air Lock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- Swords Dance  
- Extreme Speed  
- Waterfall  

Xerneas @ Choice Scarf  
Ability: Fairy Aura  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Sleep Talk  

Salamence (M) @ Salamencite  
Ability: Intimidate  
EVs: 44 HP / 252 Atk / 212 Spe  
Adamant Nature  
- Dragon Dance  
- Double-Edge  
- Roost  
- Earthquake  

Groudon @ Red Orb  
Ability: Drought  
EVs: 248 HP / 8 Def / 252 SpD  
Careful Nature  
- Stealth Rock  
- Earthquake  
- Roar  
- Lava Plume  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 64 Def / 192 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Toxic  
- Defog  
- Judgment  

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