Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 248 HP / 252 Def / 8 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Transform  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 144 HP / 156 Atk / 56 SpD / 152 Spe  
Adamant Nature  
- Stealth Rock  
- Precipice Blades  
- Rock Tomb  
- Swords Dance  

Arceus @ Chople Berry  
Ability: Multitype  
EVs: 236 HP / 252 Atk / 20 Spe  
Adamant Nature  
- Swords Dance  
- Extreme Speed  
- Shadow Claw  
- Recover  

Klefki @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Spikes  
- Thunder Wave  
- Toxic  
- Dazzling Gleam  

Zygarde-Complete @ Leftovers  
Ability: Power Construct  
EVs: 76 HP / 176 Atk / 24 SpD / 232 Spe  
Adamant Nature  
- Substitute  
- Glare  
- Dragon Dance  
- Thousand Arrows  

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