Foongus @ Leftovers  
Ability: Regenerator  
Tera Type: Water  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Clear Smog  
- Leaf Storm / Giga Drain 
- Spore  
- Toxic

Foongus @ Heavy-Duty Boots
Ability: Regenerator  
Tera Type: Water  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Clear Smog  
- Leaf Storm / Giga Drain 
- Spore  
- Toxic