Zygarde-Complete @ Leftovers  
Ability: Power Construct  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Haze  
- Thousand Arrows  
- Rest  
- Glare  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 248 HP / 252 Def / 8 Spe  
Bold Nature  
IVs: 0 Atk  
- Will-O-Wisp  
- Defog  
- Recover  
- Ice Beam  

Gengar-Mega @ Gengarite  
Ability: Shadow Tag  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Taunt  
- Hex  
- Substitute  

Marshadow @ Life Orb  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Shadow Sneak  
- Spectral Thief  
- Close Combat  
- Toxic  

Arceus-Poison @ Poisonium Z  
Ability: Multitype  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Will-O-Wisp  
- Perish Song  
- Poison Jab  
- Recover  

Groudon @ Red Orb  
Ability: Drought  
EVs: 252 HP / 4 Atk / 252 Def  
Lax Nature  
- Lava Plume  
- Toxic  
- Rest  
- Earthquake