Diancie-Mega @ Diancite  
Ability: Magic Bounce  
EVs: 4 Atk / 252 SpA / 252 Spe  
Naive Nature  
- Diamond Storm  
- Moonblast  
- Hidden Power [Ice]  
- Protect  

Victini @ Choice Scarf  
Ability: Victory Star  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- V-create  
- Bolt Strike  
- U-turn  
- Trick  

Kyurem-Black @ Icium Z  
Ability: Teravolt  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Freeze Shock  
- Fusion Bolt  
- Earth Power  
- Ice Beam  

Thundurus-Therian @ Rocky Helmet  
Ability: Volt Absorb  
EVs: 104 HP / 56 Def / 96 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Thunderbolt  
- Thunder Wave  
- Taunt  
- Hidden Power [Ice]  

Tapu Fini @ Leftovers  
Ability: Misty Surge  
EVs: 248 HP / 16 Def / 12 SpA / 40 SpD / 192 Spe  
Calm Nature  
- Moonblast  
- Scald  
- Taunt  
- Defog  

Steelix @ Life Orb  
Ability: Sheer Force  
EVs: 248 HP / 252 Atk / 8 SpD  
Brave Nature  
IVs: 0 Spe  
- Earthquake  
- Fire Fang  
- Ice Fang  
- Stealth Rock