A Hard Day's Night (Groudon) @ Choice Band  
Ability: Adaptability  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Precipice Blades  
- Thousand Arrows  
- Glacial Lance  
- U-turn  

Can't Buy Me Love (Xerneas) @ Choice Specs  
Ability: Pixilate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Rash Nature  
- Boomburst  
- Volt Switch  
- Extreme Speed  
- Trick  

If I Fell (Zacian-Crowned) @ Rusted Sword  
Ability: Intrepid Sword  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Bolt Strike  
- Close Combat  
- Spikes  
- Strength Sap  

Any Time At All (Giratina) @ Griseous Orb  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Core Enforcer  
- Spectral Thief  
- Roost  
- Teleport  

I'll Cry Instead (Cramorant-Gorging) @ Choice Scarf  
Ability: Gulp Missile  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Trick  
- Strength Sap  
- Rapid Spin  
- Teleport  

I'll Be Back (Dialga) @ Assault Vest  
Ability: Regenerator  
Level: 99  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Core Enforcer  
- U-turn  
- Spectral Thief  
- Doom Desire