Rayquaza @ Focus Sash  
Ability: Air Lock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Dragon Ascent  
- Earthquake  
- Extreme Speed  
- Swords Dance  

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

Xerneas @ Choice Specs  
Ability: Fairy Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moonblast  
- Grass Knot  
- Hidden Power [Fire]  
- Aromatherapy  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 80 Def / 176 Spe  
Timid Nature  
IVs: 0 Atk  
- Ice Beam  
- Toxic  
- Defog  
- Recover  

Yveltal @ Metronome  
Ability: Dark Aura  
EVs: 4 Atk / 252 SpA / 252 Spe  
Hasty Nature  
- Oblivion Wing  
- Dark Pulse  
- Sucker Punch  
- U-turn  

Blaziken-Mega @ Blazikenite  
Ability: Speed Boost  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Protect  
- Stone Edge  
- Flare Blitz  
- Low Kick