Delibird @ Focus Sash  
Ability: Vital Spirit  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Icy Wind  
- Spikes  
- Destiny Bond  
- Thief  

Grimmsnarl (M) @ Light Clay  
Ability: Prankster  
EVs: 252 HP / 132 Def / 120 SpD / 4 Spe  
Careful Nature  
- Reflect  
- Light Screen  
- Taunt  
- Play Rough  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 44 HP / 76 Def / 252 SpA / 136 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Thunder  
- Geomancy  
- Substitute  

Groudon @ Lum Berry  
Ability: Drought  
EVs: 132 HP / 252 Atk / 124 Spe  
Adamant Nature  
- Swords Dance  
- Rock Polish  
- Precipice Blades  
- Stone Edge  

Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Prism Armor  
EVs: 136 HP / 252 Atk / 120 Spe  
Adamant Nature  
- Dragon Dance  
- Sunsteel Strike  
- Earthquake  
- Stone Edge  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Bulk Up  
- Close Combat  
- Poltergeist  
- Shadow Sneak