Groudon @ Sitrus Berry  
Ability: Drought  
EVs: 220 HP / 156 Atk / 4 Def / 116 SpD / 12 Spe  
Adamant Nature  
- Protect  
- Swords Dance  
- Rock Slide  
- Precipice Blades  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 84 HP / 140 Def / 108 SpA / 4 SpD / 172 Spe  
Modest Nature  
IVs: 0 Atk  
- Protect  
- Geomancy  
- Moonblast  
- Dazzling Gleam  

Thundurus (M) @ Safety Goggles  
Ability: Prankster  
EVs: 148 HP / 4 Def / 4 SpA / 236 SpD / 116 Spe  
Calm Nature  
- Eerie Impulse  
- Thunderbolt  
- Taunt  
- Thunder Wave  

Porygon2 @ Eviolite  
Ability: Analytic  
Level: 50  
EVs: 244 HP / 36 Def / 196 SpA / 4 SpD / 28 Spe  
Modest Nature  
IVs: 0 Atk  
- Hyper Beam  
- Icy Wind  
- Shadow Ball  
- Ally Switch  

Charizard-Gmax @ Life Orb  
Ability: Solar Power  
Level: 50  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hurricane  
- Protect  
- Blast Burn  
- Heat Wave  

Gastrodon-East @ Leftovers  
Ability: Storm Drain  
Level: 50  
EVs: 172 HP / 252 Def / 12 SpA / 72 SpD  
Bold Nature  
IVs: 0 Atk / 23 Spe  
- Ice Beam  
- Earth Power  
- Yawn  
- Protect