Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 248 HP / 252 SpA / 8 SpD  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Dazzling Gleam  
- Protect  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Level: 50  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Precipice Blades  
- Fire Punch  
- Swords Dance  
- Protect  

Salamence-Mega @ Salamencite  
Ability: Aerilate  
Level: 50  
EVs: 252 HP / 4 Atk / 252 Spe  
Naive Nature  
- Tailwind  
- Hyper Voice  
- Double-Edge  
- Protect  

Aegislash @ Ghostium Z  
Ability: Stance Change  
Level: 50  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Gyro Ball  
- Shadow Ball  
- Wide Guard  
- King's Shield  

Tapu Fini @ Wiki Berry  
Ability: Misty Surge  
Level: 50  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Nature's Madness  
- Heal Pulse  
- Icy Wind  
- Haze  

Gengar-Mega @ Gengarite  
Ability: Shadow Tag  
Level: 50  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Shadow Ball  
- Clear Smog  
- Protect