SM OU I think i legit made a good team :)

[SheepaTron]

Latias-Mega @ Latiasite
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Stored Power
- Substitute
- Dragon Pulse

Clefable @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Calm Mind
- Moonblast
- Soft-Boiled
- Heal Bell

Celesteela @ Leftovers
Ability: Beast Boost
EVs: 248 HP / 28 Def / 232 SpD
Sassy Nature
- Leech Seed
- Heavy Slam
- Flamethrower
- Protect

Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 252 HP / 92 Def / 164 SpD
Sassy Nature
IVs: 0 Spe
- Leech Seed
- Stealth Rock
- Spikes
- Gyro Ball

Greninja-Ash @ Life Orb
Ability: Battle Bond
EVs: 252 SpA / 4 SpD / 252 Spe
Hasty Nature
- U-turn
- Haze
- Hydro Pump
- Water Shuriken

Haxorus @ Lum Berry
Ability: Rivalry
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance
- Outrage
- Earthquake
- Poison Jab

I don't think any of these pokemon need to be explained, if you have questions, feel free to ask.

 

[Sun]

Ciao bello 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. 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.