Walrein @ Leftovers  
Ability: Thick Fat  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Substitute  
- Toxic  
- Surf  
- Ice Beam  
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Optional Move(s): 
- Brine
- Hidden Power Grass
- Super Fang
Optional Item(s): 
- Choice Specs
Optional Ability:  
- N/A
Optional EV/IV(s): 
- 176 HP / 236 SpA / 96 Spe (Modest)
- 248 HP / 252 SpA / 8 Spe (Modest)