It is hard to rate a team when there is not details about the team, or any explanation why you choose them. Is this going to be a competitive team, or a Normal in game team? It needs more details. It missing move sets, EVs, Abilities.
Just for the Pokemon you just named, I suggest you should put it like this:
Sableye -
Let me show you some tricks~
Ability: Prankster
Nature: Calm, Ev: 252 HP / 120 Def / 136 SpD
Item: Lagging Tail/Iron Ball/leftovers.
Movesets: Will-o-Wisp, Taunt, Recover, foul play/nightshade/Trick
Sableye is one of my favourite lead pokemon because he is an anti-hazard Pokemon. Thanks to Prankster you can put Taunt first and stop your opponent from using any hazard moves. Will-o-wisp to burn or to do damage (also reduce 50% of physical damage). Lastly, I let you chose a varies of moveset such as foul play, nightshade or Trick. I will recommend trick + lagging tail/iron ball. It helps to slow down your opponent Pokemon, or take out their item. This set can counter pokemons such as ferrothorn, skarmory, klefki, or most of the physical attackers.
Ferrothorn -
Hazardmon
Ability - Iron Barbs
Nature: relaxed, EV: 252 HP / 48 Def / 208 SpD
Moveset:
~
Spikes /
Stealth Rock
~
Leech Seed /
Stealth Rock
~
Power Whip /
Protect
~
Gyro Ball /
Thunder Wave
Ferrothorn is usually consider a hazard pokemon,so you set up Stealth rock, spikes or leech seeds. It will help to counter pokemons such as talonflame, charizard or gyarados (no mega evolution)
Azumarill -
A Fairy blue balloon
move 1: Aqua Jet
move 2: Play Rough
move 3: Waterfall | Aqua Tail
move 4: Superpower/Belly drum (if you can take the risk)
ability: Huge Power
item: Choice Band | Splash Plate
nature: Adamant Nature
evs: 168 HP | 252 Atk | 4 Def | 84 Spe
Ha! he is extremely scary, he is really good against dragon type Pokemon. not going to say much I just really like this Pokemon =P
Garchomp @Garchompite
192 HP/152 Atk/164 Speed
Hasty/Naive nature
Nature: Rough Skin
- Substitute
- Dragon Claw/Outrage
- Earthquake
- Fire Blast/Stone Edge/Poison Jab
Gliscor: Physical Wall
move 1: Protect / Roost
move 2: Substitute / Taun<br />
move 3: Toxic
move 4: Earthquake
ability: Poison Heal
item: Toxic Orb
evs: 244 HP / 252 Def / 12 Spe
nature: Impish Nature (+Def, -SpA)
Since you are using Garchomp and Gliscor, you may benefit using Tyranitar as your Sixth Pokemon.
Tank and Hit hard:
Tyranitar @ Assault Vest
Ability: Sand Stream
EV's: 252 HP / 252 SpD / 4 Atk
- Crunch / Payback
- Pursuit
- Stone Edge / Ice Beam / Fire Blast
- Superpower / Low Kick