Dialga @ Psychium Z  
Ability: Pressure  
EVs: 252 HP / 252 SpA / 4 SpD  
Modest Nature  
IVs: 0 Atk  
- Power Gem  
- Draco Meteor  
- Flash Cannon  
- Heal Block  

Groudon-Primal @ Red Orb  
Ability: Desolate Land  
EVs: 252 HP / 244 SpD / 12 Spe  
Calm Nature  
IVs: 0 Atk  
- Stealth Rock  
- Earth Power  
- Lava Plume  
- Toxic  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
- Oblivion Wing  
- U-turn  
- Dark Pulse  
- Foul Play  

Xerneas @ Power Herb  
Ability: Fairy Aura  
EVs: 184 HP / 252 SpA / 72 Spe  
Modest Nature  
IVs: 0 Atk  
- Geomancy  
- Moonblast  
- Focus Blast  
- Grass Knot  

Salamence-Mega @ Salamencite  
Ability: Intimidate  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Double-Edge  
- Dragon Claw  
- Earthquake  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 64 Def / 192 Spe  
Timid Nature  
IVs: 0 Atk  
- Defog  
- Recover  
- Ice Beam  
- Judgment