Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Unnerve  
EVs: 40 Def / 216 SpA / 252 Spe  
Timid Nature  
- Psystrike  
- Ice Beam  
- Fire Blast  
- Calm Mind  

Magearna @ Normalium Z  
Ability: Soul-Heart  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
- Heart Swap  
- Fleur Cannon  
- Volt Switch  
- Heal Bell  

Yveltal @ Leftovers  
Ability: Dark Aura  
EVs: 248 HP / 76 SpD / 184 Spe  
Timid Nature  
- Foul Play  
- Toxic  
- Taunt  
- Roost  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 252 Def / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Defog  
- Hex  
- Draco Meteor  
- Thunder Wave  

Groudon-Primal @ Red Orb  
Ability: Drought  
EVs: 180 HP / 252 SpA / 76 Spe  
Mild Nature  
- Stealth Rock  
- Precipice Blades  
- Overheat  
- Rock Tomb  

Arceus @ Chople Berry  
Ability: Multitype  
EVs: 240 HP / 252 Atk / 16 Spe  
Adamant Nature  
- Swords Dance  
- Extreme Speed  
- Shadow Claw  
- Recover