Regirock @ Leftovers  
Ability: Sand Stream  
EVs: 252 HP / 4 Atk / 252 SpD  
Careful Nature  
- Stealth Rock  
- Stone Edge  
- Pursuit  
- Dragon Dance  

Xurkitree @ Life Orb  
Ability: Sand Rush  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Thunderbolt  
- Surf  
- Shadow Ball  
- Hidden Power [Ice]  

Archeops @ Flyinium Z  
Ability: Reckless  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Head Smash  
- Liquidation  
- Bounce  
- Aqua Jet  

Diancie-Mega @ Diancite  
Ability: Soul-Heart  
EVs: 252 SpA / 4 SpD / 252 Spe  
Modest Nature  
IVs: 0 Atk  
- Fleur Cannon  
- Ice Beam  
- Thunderbolt  
- Shift Gear  

Suicune @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 252 Def / 4 SpA  
Bold Nature  
IVs: 0 Atk  
- Scald  
- Ice Beam  
- Recover  
- Yawn  

Haxorus @ Leftovers  
Ability: Sand Rush  
EVs: 252 Atk / 4 SpD / 252 Spe  
Adamant Nature  
- Earthquake  
- Iron Head  
- Rock Slide  
- Substitute