Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 112 Atk / 92 Def / 52 SpD  
Impish Nature  
- Stealth Rock  
- Swords Dance  
- Precipice Blades  
- Stone Edge  

Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Unnerve  
EVs: 88 Def / 204 SpA / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Nasty Plot  
- Psystrike  
- Fire Blast  
- Ice Beam  

Xerneas @ Leftovers  
Ability: Fairy Aura  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Moonblast  
- Rest  
- Sleep Talk  
- Aromatherapy  

Arceus-Dark @ Dread Plate  
Ability: Multitype  
EVs: 248 HP / 164 Def / 96 Spe  
Timid Nature  
IVs: 0 Atk  
- Judgment  
- Recover  
- Ice Beam  
- Toxic  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 248 HP / 152 Def / 8 SpA / 100 SpD  
Modest Nature  
IVs: 0 Atk  
- Draco Meteor  
- Hex  
- Toxic  
- Defog  

Blissey @ Heavy-Duty Boots  
Ability: Natural Cure  
EVs: 16 HP / 252 Def / 240 SpD  
Calm Nature  
IVs: 0 Atk / 0 Spe  
- Seismic Toss  
- Thunder Wave  
- Soft-Boiled  
- Teleport