Mewtwo-Mega-X @ Mewtwonite X  
Ability: Steadfast  
EVs: 252 Atk / 4 SpA / 252 Spe  
Jolly Nature  
- Ice Beam  
- Stone Edge  
- Low Kick  
- Zen Headbutt  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Toxic  
- Spikes  
- Leech Seed  
- Gyro Ball  

Arceus-Fairy @ Pixie Plate  
Ability: Multitype  
EVs: 248 HP / 136 Def / 124 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Toxic  
- Refresh  
- Recover  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 56 Def / 200 SpD  
Relaxed Nature  
- Stealth Rock  
- Precipice Blades  
- Overheat  
- Stone Edge  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
EVs: 248 HP / 208 SpA / 36 SpD / 16 Spe  
Modest Nature  
IVs: 0 Atk  
- Defog  
- Hex  
- Draco Meteor  
- Thunder Wave  

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