Darby VGC Koko Gyara

Lemme just say 1stly, the EVs are rough, i pretty much went max max apart from P2 which was the set from the calc and celesteela whic i "borrowed" from a friend. so he knows what the 60 att does.
2ndly i've brought Garchomp or Tapu Koko to 1 game in like 2/3 Days. i usually go TR with the P2 Gyara Marowak Celesteela.

Gyarados @ Waterium Z
Ability: Intimidate
Level: 50
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Waterfall
- Ice Fang
- Dragon Dance
- Protect

Marowak-Alola @ Thick Club
Ability: Lightning Rod
Level: 50
EVs: 252 HP / 252 Atk / 4 SpD
Brave Nature
IVs: 0 Spe
- Shadow Bone
- Flare Blitz
- Bonemerang
- Protect

Porygon2 @ Eviolite
Ability: Download
Level: 50
EVs: 252 HP / 156 Def / 20 SpA / 76 SpD
Sassy Nature
IVs: 0 Atk / 0 Spe
- Tri Attack
- Ice Beam
- Trick Room
- Recover

Celesteela @ Leftovers
Ability: Beast Boost
Level: 50
EVs: 244 HP / 60 Atk / 204 SpD
Sassy Nature
IVs: 0 Spe
- Heavy Slam
- Leech Seed
- Flamethrower
- Protect

Tapu Koko @ Life Orb
Ability: Electric Surge
Level: 50
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Dazzling Gleam
- Grass Knot
- Protect

Garchomp @ Focus Sash
Ability: Rough Skin
Level: 50
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Dragon Claw
- Rock Slide
- Protect