Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Volt Switch  
- Heart Swap  
- Pain Split  

Yveltal @ Dread Plate  
Ability: Dark Aura  
EVs: 248 HP / 8 Atk / 252 Def  
Impish Nature  
- Foul Play  
- Sucker Punch  
- Roost  
- Taunt  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
Happiness: 0  
EVs: 252 HP / 56 Def / 200 SpD  
Relaxed Nature  
- Stealth Rock  
- Precipice Blades  
- Rock Tomb  
- Overheat  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 252 Def / 236 SpA / 20 Spe  
Modest Nature  
IVs: 0 Atk  
- Hex  
- Draco Meteor  
- Will-O-Wisp  
- Defog  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 72 HP / 100 Def / 252 SpA / 84 Spe  
Modest Nature  
- Geomancy  
- Thunder  
- Focus Blast  
- Moonblast  

Necrozma-Dusk-Mane @ Ultranecrozium Z  
Ability: Prism Armor  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Swords Dance  
- Stone Edge  
- Earthquake  
- Photon Geyser