Deoxys-Speed @ Rocky Helmet  
Ability: Pressure  
Tera Type: Psychic  
EVs: 248 HP / 48 Def / 212 Spe  
Timid Nature  
IVs: 0 Atk  
- Skill Swap  
- Spikes  
- Taunt  
- Magic Coat  

Xerneas @ Power Herb  
Ability: Fairy Aura  
Tera Type: Electric  
EVs: 48 HP / 36 Def / 252 SpA / 172 Spe  
Timid Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Thunder  
- Substitute  

Koraidon @ Dragonium Z  
Ability: Orichalcum Pulse  
Tera Type: Fighting  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Low Kick  
- Dragon Claw  
- Swords Dance  
- Flare Blitz  

Necrozma-Dusk-Mane @ Weakness Policy  
Ability: Prism Armor  
Tera Type: Steel  
EVs: 248 HP / 252 Atk / 8 Def  
Brave Nature  
IVs: 0 Spe  
- Trick Room  
- Photon Geyser  
- Earthquake  
- Sunsteel Strike  

Arceus @ Chople Berry  
Ability: Multitype  
Tera Type: Ghost  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Swords Dance  
- Extreme Speed  
- Shadow Claw  
- Brick Break  

Eternatus @ Power Herb  
Ability: Pressure  
Tera Type: Fire  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Meteor Beam  
- Flamethrower  
- Sludge Bomb  
- Dynamax Cannon