Groudon @ Choice Band  
Ability: Download  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Precipice Blades  
- Thousand Arrows  
- Glacial Lance  
- U-turn  

Eternatus @ Choice Specs  
Ability: Download  
EVs: 252 HP / 248 Def / 252 SpA / 252 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Draco Meteor  
- Sludge Wave  
- Volt Switch  
- Trick  

Calyrex-Ice @ Toxic Orb  
Ability: Poison Heal  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Shift Gear  
- Icicle Spear  
- Low Kick  
- Spikes  

Regigigas @ Assault Vest  
Ability: Regenerator  
EVs: 252 HP / 252 Atk / 248 Def / 252 SpD / 252 Spe  
Adamant Nature  
- Nuzzle  
- Facade  
- Spectral Thief  
- U-turn  

Kartana @ Metronome  
Ability: Fur Coat  
EVs: 252 HP / 252 Atk / 252 Def / 252 SpD / 252 Spe  
Jolly Nature  
- Defog  
- Roost  
- Anchor Shot  
- Low Kick  

Registeel @ Leftovers  
Ability: Prankster  
EVs: 252 HP / 252 Def / 252 SpD / 252 Spe  
Calm Nature  
IVs: 0 Atk  
- Glare  
- Parting Shot  
- Haze  
- Recover