I will try my best to help improve your team. (changes in bold)
Chandulure (M) @ WideLens for your moveset or Charcoal/Focus Sash for mine (annoyer)
(I can give stats and nature later)
Ability: flame body
Will-o-wisp- burns them plus powers up hex
Hex- to make a killing blow after will-o-wisp
Shadow ball- STAB
Fireblast/Overheat
(Change Inferno to something like Fireblast or Overheat(because of high hit-rate) to avoid being killed due to low hit-rates on fire moves.) plus i have a Chandelure with Overheat and I almost always kill my target and then afterwards i switch out and throw in something like a Kyogre.
Wailord (M) @ quick claw (priority) (tank)
(stats and nature later for all)
Ability: uh...
Hydro pump- STAB
Earthquake-coverage and destroys lightning
Boune- coverage of grass
Water spout- STAB
Lucario (M) @ fist plate (mixed sweeper)
Ability steadfast
Extreme speed- delivering the kill
Aura sphere- STAB
Dark pulse- kills psychics Or Bullet Punch for solid STAB+priority on ghosts
Calm mind- boosts aura sphere and dark pulse
Zekrom (M) @ leftovers (special sweeper)
Ability teravolt
Outrage- STAB
Draco meteor- STAB <- Great choice as long as he has fair Sp.Atk
Fusion bolt- STAB
Bolt strike- STAB
Arceus (M) @ draco plate (sweeper)
Multitype
Judgment- STAB
Surf - for solid hits on a lot of stuff you would have some trouble clearing out
Perish song- kills idiots or makes them switch
Overheat- High power level
Golurk (M) @ Sticky Barb
Klutz
Earthquake- STAB
Shadow Punch- STAB With such a high atk stat this will do more than Shadow ball
Stone edge- coverage
Hammer Arm/Low Sweep hammer Arm lowers you speed and does 100 damage, low sweep does 60 damage and lowers their speed.
Hope this helps
- DracoArceus