Regice @ Fightinium Z  
Ability: Clear Body  
EVs: 4 Def / 252 SpA / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Ice Beam  
- Thunderbolt  
- Focus Blast  
- Rock Polish

Regice @ Leftovers  
Ability: Clear Body  
EVs: 248 HP / 8 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Ice Beam / Seismic Toss  
- Toxic  
- Sleep Talk  
- Rest
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Optional Move(s): 
- Charge Beam
- Counter
- Frost Breath
- Thunder Wave
Optional Item(s): 
- Poisonium Z
Optional Ability: 
- Ice Body
Optional EV/IV(s): 
- 248 HP / 176 SpD / 84 Spe (Calm)