Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Stealth Rock  
- Toxic  
- Dragon Tail  
- Fire Punch  

Ferrothorn @ Leftovers  
Ability: Iron Barbs  
EVs: 252 HP / 4 Atk / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Spikes  
- Leech Seed  
- Protect  
- Bullet Seed  

Zekrom @ Choice Scarf  
Ability: Teravolt  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naive Nature  
- Bolt Strike  
- Volt Switch  
- Outrage  
- Earth Power  

Mewtwo-Mega-Y @ Mewtwonite Y  
Ability: Pressure  
EVs: 64 HP / 252 SpA / 192 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Recover  
- Psystrike  
- Fire Blast  

Tyranitar @ Shuca Berry  
Ability: Sand Stream  
EVs: 252 HP / 252 Def / 4 Spe  
Impish Nature  
- Pursuit  
- Foul Play  
- Toxic  
- Taunt  

Arceus-Ground @ Earth Plate  
Ability: Multitype  
EVs: 244 HP / 248 Def / 16 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Ice Beam  
- Defog  
- Recover