Aerodactyl-Mega @ Life Orb  
Ability: Magic Guard  
Tera Type: Rock  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Head Smash  
- Brave Bird  
- Flare Blitz  
- Strength Sap  

Dialga-Origin @ Assault Vest  
Ability: Regenerator  
Tera Type: Fairy  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Quiet Nature  
IVs: 0 Spe  
- Revelation Dance  
- Knock Off  
- U-turn  
- Stone Axe  

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

Arceus-Ground @ Earth Plate  
Ability: Ice Scales  
Tera Type: Steel  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Shore Up  
- Precipice Blades  
- Tidy Up  
- Toxic  

Eternatus @ Draco Plate  
Ability: Fur Coat  
Tera Type: Flying  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Strength Sap  
- Judgment  
- Torch Song  
- Spikes  

Chansey @ Eviolite  
Ability: Imposter  
Tera Type: Normal  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Shore Up  
- Teleport  
- Haze  
- Heal Bell