Cottonee @ Black Sludge  
Ability: Prankster  
Tera Type: Dark  
EVs: 252 Spe  
Naive Nature  
IVs: 0 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD  
- Substitute  
- Taunt  
- Encore  
- Stun Spore

Cottonee @ Sitrus Berry / Pecha Berry
Ability: Prankster  
Tera Type: Dark  
EVs: 252 Spe  
Naive Nature  
IVs: 1 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD  
- Switcheroo  
- Substitute  
- Taunt  
- Encore