Xatu @ Rocky Helmet  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- Night Shade  
- Roost  
- U-turn  
- Wish  

Volcarona @ Firium Z  
Ability: Flame Body  
EVs: 40 HP / 252 Def / 216 Spe  
Timid Nature  
IVs: 0 Atk  
- Will-O-Wisp  
- Flamethrower  
- Roost  
- Defog  

Altaria-Mega @ Altarianite  
Ability: Natural Cure  
EVs: 240 HP / 176 Def / 76 SpD / 16 Spe  
Impish Nature  
- Body Slam  
- Earthquake  
- Roost  
- Defog  

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

Quagsire @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
- Scald  
- Earthquake  
- Recover  
- Toxic  

Chansey @ Eviolite  
Ability: Natural Cure  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
- Stealth Rock  
- Soft-Boiled  
- Seismic Toss  
- Heal Bell