Reuniclus @ Leftovers  
Ability: Magic Guard  
EVs: 252 HP / 60 Def / 196 SpD  
Calm Nature  
IVs: 0 Atk  
- Infestation  
- Heal Block  
- Recover  
- Toxic  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Thunder  
- Focus Blast  

Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Prism Armor  
EVs: 84 HP / 252 Atk / 172 SpD  
Brave Nature  
IVs: 0 Spe  
- Trick Room  
- Sunsteel Strike  
- Stone Edge  
- Earthquake  

Yveltal @ Life Orb  
Ability: Dark Aura  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Dark Pulse  
- Oblivion Wing  
- Sucker Punch  
- Taunt  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Swords Dance  
- Precipice Blades  
- Stone Edge  

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