So I've been going through a bunch of different teams and making many considerations, and this is my COMPETITIVE shiny team for Gen 8 Anything goes
Aegislash (M) @ Choice Specs
Ability: Stance Change
Shiny: Yes
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
- Shadow Ball
- Flash Cannon
- Toxic
- Shadow Sneak
Gigalith @ Leftovers
Ability: Sand Stream
Shiny: Yes
EVs: 252 HP / 4 Def / 252 SpD
Careful Nature
- Stealth Rock
- Stone Edge
- Earthquake
- Toxic
Golisopod (M) @ Sitrus Berry
Ability: Emergency Exit
Shiny: Yes
EVs: 168 HP / 252 Atk / 88 Spe
Adamant Nature
- First Impression
- Liquidation
- Leech Life
- Aqua Jet
Tyranitar (M) @ Assault Vest
Ability: Sand Stream
Shiny: Yes
EVs: 224 HP / 32 Atk / 252 SpD
Careful Nature
- Rock Slide
- Crunch
- Pursuit
- Earthquake
Espeon (F) @ Leftovers
Ability: Magic Bounce
Shiny: Yes
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Calm Mind
- Psychic
- Shadow Ball
- Morning Sun
Noivern (M) @ Leftovers
Ability: Infiltrator
Shiny: Yes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Hurricane
- Taunt
- Roost
- U-turn