Yveltal @ Heavy-Duty Boots  
Ability: Dark Aura  
EVs: 236 Def / 88 SpD / 184 Spe  
Jolly Nature  
- Foul Play  
- U-turn  
- Roost  
- Defog  

Marshadow @ Spell Tag  
Ability: Technician  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Poltergeist  
- Close Combat  
- Shadow Sneak  
- Rock Tomb  

Amoonguss @ Rocky Helmet  
Ability: Regenerator  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Sludge Bomb  
- Spore  
- Foul Play  
- Stun Spore  

Ferrothorn @ Utility Umbrella  
Ability: Iron Barbs  
EVs: 252 HP / 4 Def / 252 SpD  
Careful Nature  
IVs: 0 Spe  
- Spikes  
- Leech Seed  
- Bullet Seed  
- Gyro Ball  

Mewtwo @ Life Orb  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Ice Beam  
- Psystrike  
- Flamethrower  
- Recover  

Eternatus @ Power Herb  
Ability: Pressure  
EVs: 224 HP / 32 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Dragon Pulse  
- Meteor Beam  
- Cosmic Power  
- Recover