Gliscor @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- U-turn  
- Earthquake  
- Roost  
- Stealth Rock  

Klefki @ Aguav Berry  
Ability: Prankster  
EVs: 252 HP / 68 Def / 188 SpD  
Impish Nature  
- Recycle  
- Play Rough  
- Spikes  
- Thunder Wave  

Slaking @ Choice Band  
Ability: Truant  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Giga Impact  
- Retaliate  
- Gunk Shot  
- Earthquake  

Latias @ Choice Scarf  
Ability: Levitate  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Healing Wish  
- Ice Beam  
- Hidden Power [Fire]  
- Psychic  

Altaria-Mega @ Altarianite  
Ability: Pixilate  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
- Toxic  
- Return  
- Roost  
- Defog  

Terrakion @ Weakness Policy  
Ability: Justified  
EVs: 32 Atk / 152 Def / 252 SpD / 72 Spe  
Impish Nature  
- Rock Polish  
- Earthquake  
- Stone Edge  
- Close Combat