Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Terrain Pulse  
- Moonblast  
- Diamond Storm  
- Mystical Fire  

Tapu Koko @ Choice Specs  
Ability: Electric Surge  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk / 30 Def  
- Thunderbolt  
- Hidden Power [Ice]  
- Volt Switch  
- Dazzling Gleam  

Tapu Bulu @ Leftovers  
Ability: Grassy Surge  
EVs: 220 HP / 92 Def / 140 SpD / 56 Spe  
Careful Nature  
- Swords Dance  
- Synthesis  
- Horn Leech  
- Superpower  

Corviknight @ Rocky Helmet  
Ability: Pressure  
EVs: 252 HP / 252 Def / 4 SpD  
Relaxed Nature  
IVs: 0 Spe  
- Defog  
- Brave Bird  
- U-turn  
- Roost  

Seismitoad @ Leftovers  
Ability: Water Absorb  
EVs: 252 HP / 192 SpD / 64 Spe  
Calm Nature  
IVs: 0 Atk  
- Earth Power  
- Stealth Rock  
- Scald  
- Refresh  

Victini @ Heavy-Duty Boots  
Ability: Victory Star  
EVs: 120 HP / 252 SpA / 136 Spe  
Modest Nature  
- Thunder  
- U-turn  
- Blue Flare  
- Toxic