Gym mask

Lycanroc-Dusk @ Rockium Z
Ability: Tough Claws
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Accelerock
- Stone Edge
- Drill Run
- Iron Head

Tyrantrum @ Life Orb
Ability: Rock Head
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Claw
- Dragon Dance
- Head Smash
- Stealth Rock

Minior-Indigo @ Focus Sash
Ability: Shields Down
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Autotomize
- Acrobatics
- Stone Edge
- Explosion

Crustle @ Babiri Berry
Ability: Sturdy
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Earthquake
- Toxic
- Stone Edge
- X-Scissor

Golem @ Quick Claw
Ability: Sturdy
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Earthquake
- Stone Edge
- Seismic Toss
- Power-Up Punch

Meteorzilla (Tyranitar-Mega) @ Tyranitarite
Ability: Sand Stream
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Rock Slide
- Dragon Dance
- Crunch
- Ice Punch