Deoxys-Attack @ Life Orb  
Ability: Psychic Surge  
Tera Type: Psychic  
EVs: 252 HP / 252 Atk / 252 SpA / 252 Spe  
Naive Nature  
IVs: 3 Def / 8 SpD  
- Expanding Force  
- Volt Tackle  
- V-create  
- Gigaton Hammer  

Diancie-Mega @ Choice Specs  
Ability: Pixilate  
Tera Type: Rock  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 28 SpD / 252 Spe  
Rash Nature  
- Boomburst  
- Revelation Dance  
- Extreme Speed  
- Knock Off  

Chansey (F) @ Eviolite  
Ability: Imposter  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Block  
- Haze  
- Heal Bell  
- Soft-Boiled  

Arceus-Poison @ Earth Plate  
Ability: Ice Scales  
Tera Type: Poison  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Mortal Spin  
- Judgment  
- Torch Song  
- Strength Sap  

Yveltal @ Heavy-Duty Boots  
Ability: Fur Coat  
Tera Type: Dark  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Heart Swap  
- Revelation Dance  
- U-turn  
- Strength Sap  

Dialga-Origin @ Leftovers  
Ability: Prankster  
Tera Type: Steel  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Court Change  
- Destiny Bond  
- Teleport  
- Encore