Ah-Hyun (Diancie-Mega) @ Diancite  
Ability: Magic Bounce  
Tera Type: Rock  
EVs: 24 HP / 32 Atk / 16 Def / 220 SpA / 216 Spe  
Naive Nature  
- Magnet Rise 
- Earth Power / Diamond Storm / Moonblast
- Explosion / Diamond Storm
- Endeavor / Moonblast / Explosion