Zacian (Zacian-Crowned) @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 136 Atk / 120 Def / 252 Spe  
Jolly Nature  
- Behemoth Blade  
- Play Rough  
- Swords Dance  
- Sacred Sword  

Rayquaza (Rayquaza-Mega) @ Life Orb  
Ability: Delta Stream  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Dragon Ascent  
- Extreme Speed  
- V-create  
- Draco Meteor  

Ditto (Ditto) @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 8 Atk / 252 Def  
Relaxed Nature  
IVs: 31 Atk / 0 Spe  
- Transform  

Groudon (Groudon-Primal) @ Red Orb  
Ability: Desolate Land  
EVs: 112 HP / 252 Atk / 140 Def / 4 Spe  
Adamant Nature  
- Precipice Blades  
- Stealth Rock  
- Stone Edge  
- Roar  

Xerneas (Xerneas) @ Power Herb  
Ability: Fairy Aura  
EVs: 108 Def / 252 SpA / 148 Spe  
Modest Nature  
IVs: 0 Atk  
- Moonblast  
- Geomancy  
- Thunder  
- Hidden Power [Fire]  

Lugia (Lugia) @ Heavy-Duty Boots  
Ability: Multiscale  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Roost  
- Toxic  
- Defog  
- Ice Beam