Arceus-Dark @ Silk Scarf  
Ability: Speed Boost  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Tail Glow  
- Boomburst  
- Moongeist Beam  
- Secret Sword  

Audino-Mega @ Kee Berry  
Ability: Unaware  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Spectral Thief  
- Recover  
- Leech Seed  
- Baton Pass  

street fighter (Bastiodon) @ Safety Goggles  
Ability: Levitate  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Nuzzle  
- U-turn  
- Shore Up  
- Sunsteel Strike  

Giratina @ Safety Goggles  
Ability: Prankster  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Core Enforcer  
- Strength Sap  
- Milk Drink  
- Haze  

Dialga @ Dragonium Z  
Ability: Magic Bounce  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Sassy Nature  
- Core Enforcer  
- Defog  
- Spectral Thief  
- Recover  

but why (Celesteela) @ Leftovers  
Ability: Speed Boost  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Swords Dance  
- Sunsteel Strike  
- Spikes  
- Baneful Bunker