Blissey (F) @ Utility Umbrella  
Ability: Healer  
EVs: 4 HP / 252 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Teleport  
- Soft-Boiled  
- Seismic Toss  
- Confide  

Calyrex-Shadow @ Choice Specs  
Ability: As One (Spectrier)  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Astral Barrage  
- Psyshock  
- Trick  
- Aromatherapy  

Zekrom @ Leftovers  
Ability: Teravolt  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Dragon Claw  
- Bolt Strike  
- Substitute  

Zygarde @ Leftovers  
Ability: Power Construct  
EVs: 204 HP / 248 Def / 56 Spe  
Impish Nature  
- Haze  
- Thousand Waves  
- Rest  
- Toxic  

Necrozma-Dusk-Mane @ Rocky Helmet  
Ability: Prism Armor  
EVs: 248 HP / 252 Def / 8 Spe  
Impish Nature  
- Earthquake  
- Sunsteel Strike  
- Moonlight  
- Stealth Rock  

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 16 HP / 240 SpD / 252 Spe  
Jolly Nature  
- Foul Play  
- Sucker Punch  
- Defog  
- Roost