bulky sd (Necrozma) @ Leftovers  
Ability: Prism Armor  
EVs: 184 HP / 140 Atk / 184 Spe  
Jolly Nature  
- Swords Dance  
- Moonlight  
- Photon Geyser  
- Earthquake / Knock Off

if knock off the attack evs aren't relevant (they 2hko reuni at +4 with eq)

knocktoxic (Necrozma) @ Leftovers  
Ability: Prism Armor  
EVs: 252 HP / 184 Def / 8 SpA / 64 Spe  
Bold Nature  
- Substitute / Earth Power 
- Knock Off  
- Moonlight  
- Toxic

spatk evs only apply if earth power, otherwise shift them to defense. if ur feeling experimental you could even try out future sight or imprison in first slot