Ho-Oh @ Life Orb  
Ability: Regenerator  
EVs: 252 HP / 244 Atk / 16 SpD  
Adamant Nature  
- Sacred Fire  
- Brave Bird  
- Earthquake  
- Roost  

Klefki @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Spikes  
- Toxic  
- Thunder Wave  
- Play Rough  

Zekrom @ Choice Scarf  
Ability: Teravolt  
EVs: 252 Atk / 4 SpA / 252 Spe  
Naughty Nature  
- Bolt Strike  
- Outrage  
- Draco Meteor  
- Sleep Talk  

Groudon @ Rocky Helmet  
Ability: Drought  
EVs: 252 HP / 84 Atk / 172 SpD  
Adamant Nature  
- Stealth Rock  
- Earthquake  
- Stone Edge  
- Thunder Wave  

Yveltal @ Black Glasses  
Ability: Dark Aura  
EVs: 32 HP / 128 Atk / 252 SpA / 96 Spe  
Mild Nature  
- Dark Pulse  
- Oblivion Wing  
- Sucker Punch  
- Taunt  

Arceus-Water @ Splash Plate  
Ability: Multitype  
EVs: 252 HP / 60 Def / 196 Spe  
Timid Nature  
IVs: 0 Atk  
- Recover  
- Judgment  
- Defog  
- Will-O-Wisp