Trevenant @ Sticky Barb  
Ability: Magic Guard  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Rock Slide  
- Wood Hammer  
- Poltergeist  
- Trick  

Lucario @ Life Orb  
Ability: Magic Guard  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Steel Beam  
- Close Combat  
- Extreme Speed  
- Stone Edge  

Dialga @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Dragon Tail  
- Heavy Slam  
- Flamethrower  
- Earthquake  

Alcremie (F) @ Leftovers  
Ability: Triage  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Draining Kiss  
- Recover  
- Encore  
- Calm Mind  

Regirock @ Leftovers  
Ability: Regenerator  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
- Stealth Rock  
- Iron Defense  
- Body Press  
- Rock Blast  

Yveltal @ Heavy-Duty Boots  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 4 SpD  
Impish Nature  
- U-turn  
- Roost  
- Foul Play  
- Defog