Dialga @ Choice Specs  
Ability: Pressure  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Flash Cannon  
- Draco Meteor  
- Flamethrower  
- Power Gem  

Rotom-Wash @ Leftovers  
Ability: Levitate  
EVs: 248 HP / 252 Def / 8 SpD  
Bold Nature  
IVs: 0 Atk  
- Foul Play  
- Will-O-Wisp  
- Toxic  
- Rest  

Arceus-Fairy @ Pixie Plate  
Ability: Multitype  
EVs: 248 HP / 168 Def / 92 Spe  
Bold Nature  
IVs: 0 Atk  
- Judgment  
- Toxic  
- Stealth Rock  
- Recover  

Groudon @ Red Orb  
Ability: Drought  
EVs: 248 HP / 248 SpD / 12 Spe  
Sassy Nature  
- Lava Plume  
- Toxic  
- Rest  
- Roar  

Yveltal @ Choice Scarf  
Ability: Dark Aura  
EVs: 8 Def / 248 SpA / 252 Spe  
Modest Nature  
- Dark Pulse  
- Oblivion Wing  
- Foul Play  
- U-turn  

Gengar @ Gengarite  
Ability: Cursed Body  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Hex  
- Sludge Wave  
- Taunt  
- Substitute