I've been trying to get together a good team (and I think I have?), but even more importantly I've been trying to be a better battler. This is the team I'm currently using and my ranking is a mediocre 1077/2404 so I figured now would be a good time to have my team assessed. If I want to get any better my team has to grow with me . . . I think? D: Regardless my team probably has some glaring problems and I'd like some help with that!
EDIT: I'm testing the current team now, so some descriptions are kind of blank.
EDIT: I'm testing the current team now, so some descriptions are kind of blank.

Gliscor @ Toxic Orb
Ability: Poison Heal
EVs: 252 HP / 184 Def / 72 Spe
Nature: Impish
Swords Dance
Earthquake
Ice Fang
Protect
Hydreigon @ Leftovers
Ability: Levitate
EVs: 4 HP / 252 Sp Att / 252 Spe
Nature: Modest
Dragon Pulse
Surf
Focus Blast
Dark Pulse
Magnezone @ Choice Specs
Ability: Analytic
EVs: HP 252 / 252 SpA
Nature: Modest
Thunderbolt
Charge Beam
Flash Cannon
HP Ice
Breloom @ Life Orb
Ability: Poison Heal
EVs: 252 Att / 252 Spe
Nature: Adamant
Bullet Seed
Spore
Mach Punch
Rock Tomb
Eelektross @ Leftovers
Ability: Levitate
EVs: 252 HP / SpA 252
Nature: Modest
Discharge
Flamethrower
HP Ice
Protect
Reuniclus @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 252 Def / 4 Spe
Nature: Bold
Calm Mind
Recover
Psychic
Focus Blast
EVs: 252 HP / 184 Def / 72 Spe
Nature: Impish
Swords Dance
Earthquake
Ice Fang
Protect
- I play it a lot like my Eelek, which is probably a bad thing because I should be able to predict most threats instead of needing to protect to tell what's going on.

Hydreigon @ Leftovers
Ability: Levitate
EVs: 4 HP / 252 Sp Att / 252 Spe
Nature: Modest
Dragon Pulse
Surf
Focus Blast
Dark Pulse
- I usually switch him in on elemental attacks or Blissey/Chancey.

Magnezone @ Choice Specs
Ability: Analytic
EVs: HP 252 / 252 SpA
Nature: Modest
Thunderbolt
Charge Beam
Flash Cannon
HP Ice
- I usually use HP Grass if I switch in Magnezone on a water type. I use Flash Cannon for sweeps.

Breloom @ Life Orb
Ability: Poison Heal
EVs: 252 Att / 252 Spe
Nature: Adamant
Bullet Seed
Spore
Mach Punch
Rock Tomb
- I love Breloom and really wanted it on my team, even though I don't play it well. I'm always afraid to switch it in. It usually just shows up after one of my mons have been KOd and Mach Punchs something with lose health before I switch out to Hydre (to tank a fire blast/flamethrower/blitz) or . . .

Eelektross @ Leftovers
Ability: Levitate
EVs: 252 HP / SpA 252
Nature: Modest
Discharge
Flamethrower
HP Ice
Protect
- I use protect to check the opponent's moves and then swap if necessary. I usually spam a stab discharge if all else fails.

Reuniclus @ Leftovers
Ability: Magic Guard
EVs: 252 HP / 252 Def / 4 Spe
Nature: Bold
Calm Mind
Recover
Psychic
Focus Blast
- I've managed to KO a decent number of things with this even though I'm really bad at setting up and I get pursuit'd a lot.
Any glaring problems? :(