Gengar @ Choice Band  
Ability: Levitate  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Shadow Ball  
- Sludge Bomb  
- Focus Punch  
- Explosion  

Skarmory @ Leftovers  
Ability: Keen Eye  
EVs: 252 HP / 232 Def / 24 Spe  
Bold Nature  
IVs: 0 Atk  
- Spikes  
- Roar  
- Toxic  
- Protect  

Latios @ Soul Dew  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Thunder  
- Psychic  
- Ice Beam  
- Recover  

Rayquaza @ Choice Band  
Ability: Air Lock  
EVs: 4 HP / 252 Atk / 252 Spe  
Adamant Nature  
- Hidden Power [Flying]  
- Earthquake  
- Extreme Speed  
- Sleep Talk  

Castform @ Leftovers  
Ability: Forecast  
Shiny: Yes  
EVs: 4 HP / 252 SpA / 252 Spe  
Naive Nature  
- Weather Ball  
- Thunder  
- Ice Beam  
- Shadow Ball  

Mightyena @ Leftovers  
Ability: Intimidate  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 3 Atk / 30 SpA  
- Heal Bell  
- Crunch  
- Toxic  
- Hidden Power [Electric]