Ditto @ Choice Scarf  
Ability: Imposter  
EVs: 252 HP / 4 Atk / 252 Def  
Relaxed Nature  
IVs: 0 Spe  
- Transform  

Swampert-Mega @ Swampertite  
Ability: Damp  
EVs: 252 Atk / 4 Def / 252 Spe  
Adamant Nature  
- Waterfall  
- Earthquake  
- Ice Punch  
- Superpower  

Garchomp @ Rockium Z  
Ability: Rough Skin  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Earthquake  
- Stone Edge  
- Swords Dance  

Tapu Fini @ Leftovers  
Ability: Misty Surge  
EVs: 248 HP / 16 Def / 12 SpA / 40 SpD / 192 Spe  
Calm Nature  
IVs: 0 Atk  
- Defog  
- Moonblast  
- Scald  
- Taunt  

Celesteela @ Leftovers  
Ability: Beast Boost  
EVs: 248 HP / 28 Def / 232 SpD  
Sassy Nature  
- Leech Seed  
- Protect  
- Heavy Slam  
- Flamethrower  

Metagross @ Choice Band  
Ability: Clear Body  
EVs: 40 HP / 252 Atk / 216 Spe  
Adamant Nature  
- Meteor Mash  
- Zen Headbutt  
- Pursuit  
- Bullet Punch