Latios-Mega (M) @ Latiosite  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Recover  
- Hidden Power [Fire]  
- Surf  

Kartana @ Grassium Z  
Ability: Beast Boost  
EVs: 128 HP / 128 Atk / 252 Spe  
Jolly Nature  
- Leaf Blade  
- Knock Off  
- Defog  
- Synthesis  

Cresselia (F) @ Leftovers  
Ability: Levitate  
EVs: 252 HP / 92 Def / 152 SpA / 12 Spe  
Bold Nature  
IVs: 0 Atk  
- Moonlight  
- Calm Mind  
- Ice Beam  
- Psyshock  

Toxapex @ Black Sludge  
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Scald  
- Toxic Spikes  
- Recover  
- Haze  

Seismitoad @ Leftovers  
Ability: Water Absorb  
EVs: 244 HP / 36 Def / 216 SpD / 12 Spe  
Careful Nature  
- Stealth Rock  
- Scald  
- Earthquake  
- Toxic  

Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 108 SpA / 100 SpD / 48 Spe  
Calm Nature  
IVs: 0 Atk  
- Flash Cannon  
- Volt Switch  
- Heal Bell  
- Pain Split