Competitive NU Team

I want to get my team rated or have some help in deciding changes with my team.

Bellossom (M) @ Leftovers
Trait: Chlorophyll
EVs: 85 HP / 82 Atk / 83 Def / 81 SAtk / 79 SDef / 100 Spd
Serious Nature
- Sleep Powder
- Giga Drain
- Leech Seed
- Facade

Luxray (M) @ Flame Orb
Trait: Guts
EVs: 85 HP / 70 Atk / 85 Def / 84 SAtk / 84 SDef / 102 Spd
- Facade
- Fire Fang
- Discharge
- Volt Switch

Armaldo (M) @ Leftovers
Trait: Battle Armor
EVs: 85 HP / 84 Atk / 85 Def / 84 SAtk / 84 SDef / 86 Spd
- Earthquake
- Stealth Rock
- Rock Blast
- Aqua Tail

Carracosta (M) @ Leftovers
Trait: Solid Rock
EVs: 84 HP / 82 Atk / 83 Def / 84 SAtk / 86 SDef / 91 Spd
- Aqua Tail
- Ice Beam
- Substitute
- Stone Edge

Articuno @ Leftovers
Trait: Pressure
EVs: 85 HP / 86 Atk / 83 Def / 83 SAtk / 83 SDef / 90 Spd
- Ice Beam
- Roost
- Substitute
- Hurricane

Gurdurr (M) @ Leftovers
Trait: Guts
EVs: 90 HP / 83 Atk / 83 Def / 83 SAtk / 84 SDef / 87 Spd
- Drain Punch
- Poison Jab
- Mach Punch
- Stone Edge