Charizard-Mega-Y @ Charizardite Y  
Ability: Blaze  
EVs: 248 HP / 128 Def / 56 SpA / 76 Spe  
Modest Nature  
IVs: 0 Atk  
- Weather Ball  
- Scorching Sands  
- Defog  
- Roost  

Reuniclus @ Life Orb  
Ability: Magic Guard  
EVs: 252 HP / 172 Def / 40 SpA / 44 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Recover  
- Psychic  
- Energy Ball  

Toxapex @ Poisonium Z  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Scald  
- Knock Off  
- Toxic  
- Recover  

Clefable @ Leftovers  
Ability: Magic Guard  
EVs: 252 HP / 104 Def / 152 SpD  
Calm Nature  
IVs: 0 Atk  
- Moonblast  
- Soft-Boiled  
- Thunder Wave  
- Stealth Rock  

Magearna @ Choice Specs  
Ability: Soul-Heart  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Trick  
- Volt Switch  
- Focus Blast  

Hydreigon @ Choice Scarf  
Ability: Levitate  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Draco Meteor  
- Dark Pulse  
- U-turn  
- Defog