Groudon @ Leftovers  
Ability: Drought  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Stealth Rock  
- Earthquake  
- Lava Plume  
- Dragon Tail  

Skarmory @ Rocky Helmet  
Ability: Sturdy  
EVs: 252 HP / 8 Def / 248 SpD  
Impish Nature  
IVs: 0 Atk  
- Spikes  
- Roost  
- Whirlwind  
- Toxic  

Giratina-Origin @ Griseous Orb  
Ability: Levitate  
Shiny: Yes  
EVs: 252 Atk / 228 SpA / 28 Spe  
Naughty Nature  
- Shadow Sneak  
- Dragon Tail  
- Draco Meteor  
- Earthquake  

Latios (M) @ Soul Dew  
Ability: Levitate  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 2 Atk / 30 SpA / 30 Spe  
- Dragon Pulse  
- Psyshock  
- Hidden Power [Fire]  
- Draco Meteor  

Arceus-Rock @ Stone Plate  
Ability: Multitype  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Judgment  
- Recover  
- Refresh  

Genesect @ Choice Scarf  
Ability: Download  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- U-turn  
- Ice Beam  
- Explosion  
- Iron Head