Shuckle @ Mental Herb  
Ability: Sturdy  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Sticky Web  
- Stealth Rock  
- Infestation  
- Encore  

Gengar @ Gengarite  
Ability: Cursed Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Shadow Ball  
- Sludge Wave  
- Taunt  
- Destiny Bond  

Yveltal @ Life Orb  
Ability: Dark Aura  
EVs: 8 Def / 248 SpA / 252 Spe  
Rash Nature  
- Dark Pulse  
- Oblivion Wing  
- Sucker Punch  
- U-turn  

Groudon @ Red Orb  
Ability: Drought  
EVs: 156 Atk / 144 SpD / 208 Spe  
Jolly Nature  
- Precipice Blades  
- Fire Punch  
- Stone Edge  
- Swords Dance  

Marshadow @ Marshadium Z  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Spectral Thief  
- Close Combat  
- Shadow Sneak  
- Bulk Up  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 152 HP / 20 Def / 252 SpA / 84 Spe  
Modest Nature  
IVs: 0 Atk / 30 SpD  
- Moonblast  
- Focus Blast  
- Hidden Power [Rock]  
- Geomancy