Shedinja @ Heavy-Duty Boots  
Ability: Wonder Guard  
Tera Type: Ground  
EVs: 252 Atk / 252 Spe  
Hasty Nature  
IVs: 0 Def / 0 SpD  
- Protect  
- Toxic  
- Poltergeist  
- Swords Dance  

Gengar-Mega @ Gengarite  
Ability: Shadow Tag  
EVs: 248 HP / 8 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Substitute  
- Encore  
- Perish Song  
- Destiny Bond  

Eternatus @ Black Sludge  
Ability: Pressure  
EVs: 212 HP / 252 SpD / 44 Spe  
Calm Nature  
IVs: 0 Atk  
- Toxic Spikes  
- Recover  
- Mystical Fire  
- Sludge Bomb