Yveltal @ Life Orb  
Ability: Dark Aura  
Tera Type: Flying  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
IVs: 0 Atk  
- Dark Pulse  
- Oblivion Wing  
- Taunt  
- Toxic  

Marshadow @ Life Orb  
Ability: Technician  
Tera Type: Ghost  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Bulk Up  
- Spectral Thief  
- Low Kick  
- Shadow Sneak  

Diancie-Mega @ Diancite  
Ability: Magic Bounce  
Tera Type: Rock  
EVs: 24 HP / 32 Atk / 220 SpA / 16 SpD / 216 Spe  
Hasty Nature  
- Diamond Storm  
- Moonblast  
- Earth Power  
- Substitute  

Groudon-Primal @ Red Orb  
Ability: Drought  
Tera Type: Ground  
EVs: 248 HP / 68 Def / 192 SpD  
Impish Nature  
- Stealth Rock  
- Swords Dance  
- Precipice Blades  
- Rock Tomb  

Ho-Oh @ Heavy-Duty Boots  
Ability: Regenerator  
Tera Type: Fairy  
EVs: 248 HP / 204 Def / 56 SpD  
Impish Nature  
- Sacred Fire  
- Toxic  
- Defog  
- Whirlwind  

Rayquaza @ Choice Band  
Ability: Air Lock  
Tera Type: Flying  
EVs: 32 HP / 252 Atk / 8 Def / 216 Spe  
Jolly Nature  
- Dragon Ascent  
- U-turn  
- V-create  
- Extreme Speed