Aegislash @ Steelium Z  
Ability: Stance Change  
Tera Type: Steel  
EVs: 252 HP / 4 Atk / 252 SpA  
Quiet Nature  
IVs: 0 Spe  
- Steel Beam  
- Metal Sound  
- Shadow Ball  
- Shadow Sneak  

Gyarados-Mega @ Gyaradosite  
Ability: Mold Breaker  
Tera Type: Water  
EVs: 8 HP / 248 Atk / 252 Spe  
Adamant Nature  
- Dragon Dance  
- Outrage  
- Crunch  
- Temper Flare  

Iron Valiant @ Booster Energy  
Ability: Quark Drive  
Tera Type: Fairy  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Substitute  
- Reversal  
- Spirit Break  
- Encore