[RATE MY TEAM] Pretty terrible vgc 2017 team

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I made the edits, but in my opinion its still not that great.

Gyarados @ Waterium Z  
Ability: Intimidate  
Level: 50  
EVs: 52 HP / 196 Atk / 76 Def / 4 SpD / 180 Spe  
Adamant Nature  
- Waterfall  
- Dragon Dance  
- Ice Fang  
- Protect  

moved evs.

Marowak-Alola @ Thick Club  
Ability: Lightning Rod  
Level: 50  
EVs: 252 HP / 172 Atk / 4 Def / 68 SpD / 12 Spe  
Adamant Nature  
- Flare Blitz  
- Shadow Bone  
- Bonemerang  
- Protect  

Standard marowak just moved evs.

Garchomp @ Assault Vest  
Ability: Rough Skin  
Level: 50  
EVs: 28 HP / 172 Atk / 4 Def / 52 SpD / 252 Spe  
Jolly Nature  
- Earthquake  
- Dragon Claw  
- Poison Jab  
- Fire Fang  

Just moved evs

Tapu Koko @ Life Orb  
Ability: Electric Surge  
Level: 50  
EVs: 252 Atk / 4 SpA / 252 Spe  
Hasty Nature  
- Wild Charge  
- Dazzling Gleam  
- Volt Switch  
- Protect  

Mixed attacking tapu koko because I needed a special attacker.

Celesteela @ Leftovers  
Ability: Beast Boost  
Level: 50  
EVs: 228 HP / 44 Atk / 116 Def / 116 SpD / 4 Spe  
Adamant Nature  
- Heavy Slam  
- Flamethrower  
- Leech Seed  
- Wide Guard  

Standard celesteela

Porygon2 @ Eviolite  
Ability: Download  
Level: 50  
EVs: 244 HP / 96 Def / 28 SpA / 140 SpD  
Sassy Nature  
IVs: 0 Atk / 0 Spe  
- Thunderbolt  
- Ice Beam  
- Recover  
- Trick Room  

Trick room setter that adds two modes.