Gengar-Mega @ Choice Specs  
Ability: Plus  
Tera Type: Ghost  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Quiet Nature  
- Metronome  

Ampharos-Mega @ Choice Specs  
Ability: Minus  
Tera Type: Electric  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Quiet Nature  
- Metronome