Groudon @ Leftovers  
Ability: Drought  
EVs: 248 HP / 100 Atk / 144 Def / 16 Spe  
Impish Nature  
- Swords Dance  
- Precipice Blades  
- Stone Edge  
- Thunder Wave  

Zekrom @ Life Orb  
Ability: Teravolt  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
IVs: 29 HP  
- Dragon Dance  
- Bolt Strike  
- Dragon Claw  
- Weather Ball  

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

Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 248 HP / 32 Atk / 228 SpD  
Adamant Nature  
IVs: 29 Spe  
- Knock Off  
- U-turn  
- Defog  
- Roost  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 176 HP / 240 SpD / 92 Spe  
Timid Nature  
IVs: 0 Atk  
- Dynamax Cannon  
- Mystical Fire  
- Toxic  
- Recover  

Necrozma-Dusk-Mane @ Leftovers  
Ability: Prism Armor  
EVs: 248 HP / 252 Def / 8 Spe  
Impish Nature  
- Stealth Rock  
- Sunsteel Strike  
- Thunder Wave  
- Morning Sun