Mewtwo @ Twisted Spoon  
Ability: Pressure  
EVs: 116 Atk / 252 SpA / 12 SpD / 128 Spe  
Hasty Nature  
- Self-Destruct  
- Psychic  
- Thunder  
- Shadow Ball  

Groudon @ Lum Berry  
Ability: Drought  
EVs: 36 HP / 196 Atk / 180 SpD / 96 Spe  
Adamant Nature  
- Earthquake  
- Hidden Power [Ghost]  
- Rock Slide  
- Swords Dance  

Dugtrio @ Choice Band  
Ability: Arena Trap  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Toxic  
- Earthquake  
- Beat Up  
- Rock Slide  

Deoxys-Attack @ Spell Tag  
Ability: Pressure  
EVs: 252 Atk / 160 SpA / 96 Spe  
Naughty Nature  
- Shadow Ball  
- Extreme Speed  
- Fire Punch  
- Double-Edge  

Kabutops @ Leftovers  
Ability: Swift Swim  
EVs: 252 HP / 28 Atk / 228 Spe  
Adamant Nature  
- Rapid Spin  
- Rock Slide  
- Hidden Power [Ground]  
- Swords Dance  

Regice @ Leftovers  
Ability: Clear Body  
EVs: 252 HP / 72 SpA / 164 SpD / 20 Spe  
Calm Nature  
IVs: 0 Atk  
- Psych Up  
- Thunder  
- Ice Beam  
- Thunder Wave