Mewtwo @ Mewtwonite Y  
Ability: Pressure  
EVs: 40 Def / 216 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psystrike  
- Ice Beam  
- Fire Blast  
- Calm Mind  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 104 Atk / 252 SpA / 152 Spe  
Mild Nature  
- Overheat  
- Precipice Blades  
- Rock Tomb  
- Stealth Rock  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 252 HP / 204 SpA / 52 SpD  
Modest Nature  
IVs: 0 Atk  
- Will-O-Wisp  
- Hex  
- Draco Meteor  
- Defog  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 168 Def / 88 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Toxic  
- Recover  

Yveltal @ Leftovers  
Ability: Dark Aura  
EVs: 252 HP / 72 SpD / 184 Spe  
Hasty Nature  
IVs: 0 Atk  
- Taunt  
- Foul Play  
- Toxic  
- Roost  

Magearna @ Normalium Z  
Ability: Soul-Heart  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Heal Bell  
- Volt Switch  
- Heart Swap  
- Fleur Cannon