Deoxys-Attack @ Life Orb  
Ability: Magic Guard  
Tera Type: Psychic  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 Spe  
Naive Nature  
IVs: 0 SpD  
- Volt Switch  
- Lumina Crash  
- Chloroblast  
- High Jump Kick  

Arceus-Fairy @ Covert Cloak  
Ability: Ice Scales  
Tera Type: Fairy  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
- Take Heart  
- Revelation Dance  
- Mortal Spin  
- Strength Sap  

Kartana @ Choice Band  
Ability: Sword of Ruin  
Tera Type: Grass  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Gigaton Hammer  
- Flower Trick  
- V-create  
- Knock Off  

Steelix-Mega @ Assault Vest  
Ability: Regenerator  
Tera Type: Steel  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Stone Axe  
- Knock Off  
- U-turn  
- Gigaton Hammer  

Miraidon @ Covert Cloak  
Ability: Fur Coat  
Tera Type: Electric  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Strength Sap  
- Thunder Cage  
- Mortal Spin  
- Leech Seed  

Diancie-Mega @ Life Orb  
Ability: Pixilate  
Tera Type: Rock  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Strength Sap  
- V-create  
- Extreme Speed  
- Boomburst