First Team, looking for feedback

[Ryees]

I did some poking around with the knowledge I have and threw together something that I think is passable; it at least has most of the roles filled. Looking for some feedback so I can fill in the holes that I know exist in my logic and gain a bit of knowledge on how to compose a team.

Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 252 HP / 48 Def / 208 SDef
Relaxed Nature
- Spikes
- Leech Seed
- Power Whip
- Gyro Ball

Breloom @ Life Orb
Ability: Technician
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- Low Sweep
- Mach Punch
- Bullet Seed
- Spore

Cloyster @ King's Rock
Ability: Skill Link
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature
- Shell Smash
- Icicle Spear
- Rock Blast
- Ice Shard

Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 244 HP / 40 Def / 224 Spd
Impish Nature
- Substitute
- Toxic
- Protect
- Earthquake

Volcarona @ Life Orb
Ability: Flame Body
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Quiver Dance
- Bug Buzz
- Fire Blast
- Giga Drain

Rotom-W @ Leftovers
Ability: Levitate
EVs: 232 HP / 56 SAtk / 220 Spd
Modest Nature
- Volt Switch
- Hydro Pump
- Will-O-Wisp
- Pain Split

 

[Tampoff]

You need at least 3 lines of description of why youre using the pokemon.

 

[Ryees]

Got it.

Ferrothorn is my tank, simple enough there. He's big, bulky, and can put up a decent fight with good defensive typing. Technician Breloom was recommended to me by a friend for some serious damage output, and I agreed with him, so he's my sweeper/DPS outlet alongside Volcorona and Cloyster. Wash Rotom was another recommendation for a tank/staller, and I was reasonably pleased with that. Gliscor was my own idea, and my build was even similar to what Smogon had already suggested for him.

This is a bit of a "net deck," so to speak, but I'm not 100% sure I'm yet capable of building my own due to some unfamiliarity to get past, so going with it for now.

After a bit of consideration and to avoid duplication, changed Ferrothorn's held item to the Rocky Helmet.

 

[ShootingStarmie]

Hello, this RMT is breaking the rules. Unfortunately, I'm going to have to lock this for now. Please remake this while paying careful attention to the rules and PM it to me if you want me to unlock this.