Yveltal @ Life Orb  
Ability: Dark Aura  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Oblivion Wing  
- Dark Pulse  
- Taunt  
- Heat Wave  

Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Unnerve  
EVs: 76 Def / 252 SpA / 180 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Nasty Plot  
- Focus Blast  
- Fire Blast  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Stealth Rock  
- Knock Off  
- Morning Sun  
- Sunsteel Strike  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
EVs: 248 HP / 208 Def / 52 SpD  
Impish Nature  
- Sacred Fire  
- Toxic  
- Defog  
- Whirlwind  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 248 HP / 236 Def / 24 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Toxic  
- Recover  
- Ice Beam  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 144 HP / 96 Atk / 100 SpD / 168 Spe  
Adamant Nature  
- Precipice Blades  
- Swords Dance  
- Rock Polish  
- Stone Edge