SM Ubers uber team*newbie in need of help*

[Dexter208]

So i made this team for uber, half of it i used someone else team as base, and the other half i made purely on the little that i know of pokemon+what i see in others teams.

Ferrothorn (F) @ Leftovers
Ability: Iron Barbs
Shiny: Yes
EVs: 248 HP / 8 Atk / 252 Def
Relaxed Nature
IVs: 0 Spe
- Stealth Rock
- Power Whip
- Leech Seed
- Gyro Ball

Yveltal @ Choice Scarf
Ability: Dark Aura
Shiny: Yes
EVs: 252 Atk / 32 Def / 224 Spe
Adamant Nature
- Dark Pulse
- U-turn
- Oblivion Wing
- Foul Play

Xerneas @ Power Herb
Ability: Fairy Aura
Shiny: Yes
EVs: 252 SpA / 8 SpD / 248 Spe
Mild Nature
IVs: 0 Atk
- Geomancy
- Moonblast
- Focus Blast
- Thunder

Groudon-Primal @ Red Orb
Ability: Desolate Land
Shiny: Yes
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Precipice Blades
- Rock Polish
- Dragon Claw
- Stone Edge

Kyogre-Primal @ Blue Orb
Ability: Primordial Sea
Shiny: Yes
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
IVs: 0 Atk
- Origin Pulse
- Calm Mind
- Ice Beam
- Substitute

Deoxys-Defense @ Rocky Helmet
Ability: Pressure
Shiny: Yes
EVs: 248 HP / 8 SpD / 252 Spe
Calm Nature
- Cosmic Power
- Knock Off
- Recover
- Magic Coat

The focus of this team is to use Deoxy, Ferrothorn and maybe Yvelta(using U-turn) to scout/ stet up, then i have Groundon Kyrogre and Xerneas do the clean up. Simple but mostly effective, but i still fell that the team is kinda "clunky", expecialy on the movesets.
So, any thoughts on it.

 

[Snowy]

Welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide in-depth descriptions for each Pokemon to explain their roles. All six Pokemon also need to have full details of their EV spreads. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.