Deoxys-Attack @ Focus Sash  
Ability: Mold Breaker  
EVs: 252 HP / 252 Atk / 252 SpA / 252 SpD / 252 Spe  
Hasty Nature  
IVs: 3 Def  
- Stealth Rock  
- Water Shuriken  
- Knock Off  
- Explosion  

Groudon @ Red Orb  
Ability: Download  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Naive Nature  
- Thousand Arrows  
- V-create  
- Ice Beam  
- Sunsteel Strike  

Garchomp-Mega @ Dragonium Z  
Ability: Speed Boost  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Thousand Arrows  
- Outrage  
- Swords Dance  
- Spiky Shield  

Kartana @ Choice Scarf  
Ability: Steelworker  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Sunsteel Strike  
- U-turn  
- Trick  
- Wood Hammer  

Garchomp-Mega @ Choice Band  
Ability: Adaptability  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Precipice Blades  
- Dragon Hammer  
- Sunsteel Strike  
- Outrage  

Yveltal @ Leftovers  
Ability: Unaware  
EVs: 248 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Bold Nature  
IVs: 0 Atk  
- Revelation Dance  
- Will-O-Wisp  
- King's Shield  
- Shore Up