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: 252 Atk / 56 Def / 200 Spe  
Jolly Nature  
- Stealth Rock  
- Precipice Blades  
- Stone Edge  
- Swords Dance  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 252 HP / 80 Def / 32 SpA / 44 SpD / 100 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Ice Beam  
- Recover  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 248 HP / 8 Atk / 252 SpD  
Careful Nature  
- Spikes  
- Leech Seed  
- Power Whip  
- Toxic  

Yveltal @ Choice Specs  
Ability: Dark Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Dark Pulse  
- Oblivion Wing  
- Hurricane  
- U-turn  

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