Aerodactyl-Mega @ Aerodactylite  
Ability: Tough Claws  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Diamond Storm  
- Earthquake  
- Accelerock  

Ho-Oh @ Life Orb  
Ability: Regenerator  
EVs: 104 HP / 252 Atk / 152 Spe  
Adamant Nature  
- Brave Bird  
- Sacred Fire  
- Recover  
- Defog  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 144 HP / 148 Atk / 56 SpD / 160 Spe  
Adamant Nature  
- Stealth Rock  
- Precipice Blades  
- Smack Down  
- Shore Up  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 252 Def / 252 SpA / 4 SpD  
Modest Nature  
- Moongeist Beam  
- Draco Meteor  
- Defog  
- Spectral Thief  

Necrozma-Dusk-Mane @ Solganium Z  
Ability: Prism Armor  
EVs: 248 Atk / 8 SpD / 252 Spe  
Adamant Nature  
- Rock Polish  
- Swords Dance  
- Sunsteel Strike  
- Earthquake  

Xerneas @ Shed Shell  
Ability: Fairy Aura  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Moonlight  
- Moonblast  
- Aromatherapy  
- Nature's Madness