Kyogre-Primal @ Expert Belt  
Ability: Primordial Sea  
Tera Type: Ground  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Waterfall  
- Earthquake  
- Thunder Wave  
- Ice Beam  

Groudon-Primal @ Shuca Berry  
Ability: Desolate Land  
Tera Type: Dark  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Precipice Blades  
- Fire Punch  
- Crunch  
- Swords Dance  

Giratina-Origin @ Leftovers  
Ability: Levitate  
Tera Type: Steel  
EVs: 252 HP / 212 Def / 44 Spe  
Bold Nature  
IVs: 0 Atk  
- Calm Mind  
- Thunder Wave  
- Hex  
- Aura Sphere  

Altaria-Mega @ Leftovers  
Ability: Pixilate  
Tera Type: Water  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Defog  
- Roost  
- Will-O-Wisp  
- Body Slam  

Arceus-Ghost @ Dread Plate  
Ability: Multitype  
Tera Type: Poison  
EVs: 252 HP / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Stealth Rock  
- Foul Play  
- Recover  
- Taunt  

Rayquaza-Mega @ Choice Scarf  
Ability: Delta Stream  
Tera Type: Flying  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- U-turn  
- Earthquake  
- Outrage