Regigigas @ Choice Band  
Ability: Guts  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 156 Spe  
Adamant Nature  
- Facade  
- V-create  
- Wicked Blow  
- Glacial Lance  

Melmetal @ Leftovers  
Ability: Magic Bounce  
EVs: 252 HP / 252 Def / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Trick Room  
- Teleport  
- Encore  
- Recover  

Giratina @ Griseous Orb  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Sassy Nature  
IVs: 0 Spe  
- Trick Room  
- Teleport  
- Spectral Thief  
- Core Enforcer  

Calyrex-Ice @ Choice Band  
Ability: Adaptability  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD  
Brave Nature  
IVs: 0 Spe  
- Glacial Lance  
- V-create  
- Low Kick  
- Photon Geyser  

Toxapex @ Black Sludge  
Ability: Ice Scales  
EVs: 252 HP / 252 Def / 252 SpA / 252 SpD  
Relaxed Nature  
IVs: 0 Atk / 0 Spe  
- Scald  
- Taunt  
- Trick Room  
- Teleport  

Magearna @ Leftovers  
Ability: Soul-Heart  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpA / 252 SpD / 252 Spe  
Sassy Nature  
- Anchor Shot  
- Moonblast  
- Defog  
- Roost