Diancie @ Diancite  
Ability: Magic Bounce  
Tera Type: Rock  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Moonblast  
- Mystical Fire  
- Earth Power  
- Calm Mind  

Iron Boulder @ Psychium Z  
Ability: Quark Drive  
Tera Type: Rock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Zen Headbutt  
- Mighty Cleave  
- Close Combat  

Ogerpon-Cornerstone (F) @ Cornerstone Mask  
Ability: Sturdy  
Tera Type: Rock  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Swords Dance  
- Ivy Cudgel  
- Horn Leech  
- Knock Off  

Shuckle @ Mental Herb  
Ability: Sturdy  
Tera Type: Bug  
EVs: 252 HP / 252 Def / 4 SpD  
Bold Nature  
IVs: 0 Atk  
- Stealth Rock  
- Sticky Web  
- Encore  
- Final Gambit  

Nihilego @ Choice Scarf  
Ability: Beast Boost  
Tera Type: Rock  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Sludge Wave  
- Psyshock  
- Power Gem  
- Thunderbolt  

Tyranitar @ Assault Vest  
Ability: Sand Stream  
Tera Type: Rock  
EVs: 252 HP / 252 Atk / 4 SpD  
Adamant Nature  
- Earthquake  
- Fire Punch  
- Knock Off  
- Pursuit