Duosion @ Eviolite  
Ability: Magic Guard  
EVs: 252 HP / 252 Def / 4 SpA 
Bold Nature  
- Calm Mind  
- Psyshock / Psychic
- Signal Beam / Acid Armour
- Recover  

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Optional Move(s): 
- Trick Room  
- Shadow Ball  
- Hidden Power [Fighting]
Optional Item(s): 
- N/A
Optional Ability:  
- Regenerator
Optional EV/IV(s): 
- 252 HP / 4 SpA / 252 SpD (Calm)
- 252 HP / 252 SpA / 4 SpD (Quiet)