Rate My Flawless (not) OU Team

Question

OK i'm really struggling on descions here. Feel free to give any new movesets/item suggestions, replacement suggestions or strategies. Thanks!

Strategy

1-Hydriegon. lead U-turn into Espeon to lure and bounce back moves.
2- Espeon sets reflect/light screen and nabs a KO if it can.
3-Switch into Nidoking for entry hazards.
4- Switch into a Pokemon that can handle the situation.

Chandelure @ Life Orb
Ability: Infiltrator
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Fire Blast
- Shadow Ball
- Calm Mind
- Energy Ball

Role: Special wallbreaker

Gyarados-Mega @ Gyaradosite
Ability: Intimidate
Shiny: Yes
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Aqua Tail
- Dragon Dance
- Crunch
- Earthquake

Role: Physical sweeper

Espeon @ Focus Sash
Ability: Magic Bounce
EVs: 4 Def / 252 SpA / 252 Spe
Timid Nature
- Psychic
- Signal Beam
- Reflect
- Light Screen

Role: RLS setter / switch-in tool (bounce back entry hazards)

Nidoking @ Leftovers
Ability: Sheer Force
Shiny: Yes
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Stealth Rock
- Toxic Spikes
- Sludge Wave
- Earth Power

Role: Entry hazard setter

Hydreigon @ Assault Vest
Ability: Levitate
EVs: 252 Spe / 252 SpA /4 Def
Modest Nature
- U-turn
- Dragon Pulse
- Dark Pulse
- Focus Blast

Role: Lead U-turn into espeon/nidoking (depending on the situation) / Sp tank / sweeper

Ursaring @ Flame Orb
Ability: Guts
Shiny: Yes
EVs: 252 HP / 252 Atk / 4 Def
Adamant Nature
- Facade
- Play Rough
- Earthquake
- Bulk Up

Role Physical wallbreaker/ bulky sweeper

Comments

Well you have an OU team without any OU Pokemon other than MGyara. Why? Using 'unexpected' or 'unique' pokemon may sound good in theory, but they take a lot of skill to pay off and a whole team of them will have major weaknesses to very common pokemon. It may be boring but try to make a more 'standard' team until you get used to the tier and gain some skill and experience. Then you can use wacky teams.

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I always thought that the Pokemon in OU are boring and generic to use since they are well, overused. To me this team gets the job done and I like my strategy. Thanks for the the contribution!

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Oh and by the way I've been playing showdown for ages and I know OU like  the back and of my hand.

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If you say so. But if wanted to use lower wacky pokemon, play lower tiers.

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I see that your team is weak to Keldeo and vulnerable to getting sweeped with the help of entry hazards. A defogger/rapid spimmer as well as a pokemon that does well against Keldeo would be nice. I know that Espeon is there, but if the opponent somehow manages to lay down rocks, your team is going to have a tough time because you need to switch around a lot.

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I guess starmie fits those two holes perfectly, but who do I replace?

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There are a lot of fast pokemon popular in OU or common choice scarfers that can do serious damage to your team. With Toxic Spikes on your team, spreading damage with the poison and doing damage to allow someone to sweep is your playstyle. So having pokemon that can do residual damage is recommended as well.  Scarfed Landorus-T does good damage to your team as well. So putting Choice Scarf on Chandelure or Hydreigon is viable. Adding in a generic tank is good. You have many setup pokemon so i recommend to cut back on it or change their moveset. A small recommendation is changing Aqua Tail on Gyarados to Waterfall for the 100% accuracy and flinch chance.
I would recommend a mix EV spread Ferrothorn.  Switch Ursaring for Starmie as they cover the same types and counter the same types as well. Starmie even more if you use Reflect Type set with Ice Beam. Nidoking is nice but be careful because it is weak to a lot of pokemon in OU. You can switch out Hydreigon with a Banded Scizor with Uturn/Superpower/Pursuit/Bullet Punch for that residual damage. Scizor is bulky and can perform as a pivot. Chandelure can be a Life Orb/Choice Scarf/Choice Specs. Setting screens with Espeon and switching into Chandelure with Life Orb after setting hazards is terrifying. You can keep the moveset but this Chandelure is most effective after screens and is in a matchup where it can set up CM's. Play right and you can win the game either with Scizor sweep or Gyrados sweep. Choosing whether to keep Life Orb or to change it to Choice Scarf is entirely your choice. Having Psyshock over Psychic on Espeon is needed for Wallbreak.