Charizard-Mega-Y @ Charizardite Y  
Ability: Drought  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk / 30 Def  
- Fire Blast / Flamethrower 
- Solar Beam  
- Focus Blast  
- Hidden Power [Ice] / Substitute / Defog

Latias (F) @ Rocky Helmet
Ability: Levitate  
EVs: 248 HP / 8 Def / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Ice Beam / Psychic
- Thunder Wave  
- Healing Wish  
- Defog