Mewtwo-Mega-X @ Mewtwonite X  
Ability: Steadfast  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Zen Headbutt  
- Low Kick  
- Stone Edge  
- Taunt  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 248 HP / 228 SpD / 32 Spe  
Careful Nature  
- Precipice Blades  
- Stealth Rock  
- Toxic  
- Overheat  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 198 Def / 58 Spe  
Bold Nature  
- Recover  
- Toxic  
- Defog  
- Ice Beam  

Yveltal @ Life Orb  
Ability: Dark Aura  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Dark Pulse  
- Oblivion Wing  
- Taunt  
- Knock Off  

Magearna @ Normalium Z  
Ability: Soul-Heart  
EVs: 252 HP / 4 SpA / 252 SpD  
Calm Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Heal Bell  
- Volt Switch  
- Heart Swap  

Zygarde-Complete @ Leftovers  
Ability: Power Construct  
EVs: 252 HP / 4 Atk / 252 Def  
Impish Nature  
- Thousand Arrows  
- Rest  
- Glare  
- Sleep Talk