Meloetta @ Normalium Z  
Ability: Serene Grace  
EVs: 204 HP / 252 Def / 52 Spe  
Modest Nature  
IVs: 0 Atk  
- Hyper Beam  
- Calm Mind  
- Uproar  
- Laser Focus  

Swampert-Mega @ Swampertite  
Ability: Torrent  
EVs: 252 HP / 188 Def / 68 SpD  
Adamant Nature  
- Earthquake  
- Ice Punch  
- Yawn  
- Protect  

Charizard-Mega-Y @ Charizardite Y  
Ability: Blaze  
EVs: 108 Def / 148 SpA / 252 Spe  
Timid Nature  
IVs: 1 Atk / 30 SpA  
- Air Slash  
- Blast Burn  
- Hidden Power [Electric]  
- Solar Beam