Groudon @ Groundium Z  
Ability: Drought  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Precipice Blades  
- Stone Edge  
- Fire Punch  

Rayquaza-Mega @ Choice Band  
Ability: Air Lock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Ascent  
- Extreme Speed  
- V-create  
- Waterfall  

Klefki @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Thunder Wave  
- Spikes  
- Toxic  
- Play Rough  

Arceus-Poison @ Toxic Plate  
Ability: Multitype  
EVs: 248 HP / 8 Atk / 8 Def / 144 SpD / 96 Spe  
Jolly Nature  
- Stealth Rock  
- Recover  
- Poison Jab  
- Will-O-Wisp  

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

Tapu Koko @ Leftovers  
Ability: Electric Surge  
EVs: 248 HP / 8 SpD / 252 Spe  
Timid Nature  
- Thunderbolt  
- Roost  
- Defog  
- U-turn