There was a lot to consider, but with all your input I was able to tinker a bit more. So with that said, here are the changes;
Creeper (Sableye) (M) @ Leftovers
Trait: Prankster
EVs: 252 HP / 120 Def / 136 SpD
Careful Nature
- Will-O-Wisp
- Taunt
- Recover
- Foul Play
I took the advice about changing Sableye's Evs for more coverage. Though I decided to keep Foul Play for type coverage.
Hoodlum (Scrafty) (M) @ Leftovers
Trait: Shed Skin
EVs: 4 Atk / 252 HP / 252 SDef
Careful Nature
- Bulk Up
- Drain Punch
- Crunch
- Rest
I left Scrafty alone. A lot of you recommended switching to a DD set, but I utilize Scrafty more as a wall than a physical attacker.
Hydra (Hydreigon) (M) @ Choice Scarf
Trait: Levitate
EVs: 252 Spd / 252 SAtk / 4 SDef
Timid Nature
- Draco Meteor
- Dark Pulse
- Heat Wave
- Surf/U-Turn
I think that Hydreigon had the most changes out of everyone on the team. I've noticed a massive improvement by removing focus Sash for Choice Scarf. I replaced Flamethrower for heatwave for more damage, though I'm unsure if I should replace it for Heat Blast. The 85% accuracy makes me slightly nervous.
Umbra (Umbreon) (M) @ Leftovers
Trait: Synchronize
Shiny: Yes
EVs: 252 SDef / 252 HP / 4 Def
Careful Nature
- Wish
- Heal Bell
- Protect
- Foul Play
Minor change.
Raven (Honchkrow) (M) @ Life Orb
Trait: Moxie
EVs: 252 Atk / 4 SDef / 252 Spe
Adamant Nature
IVs: 30 Atk / 30 SAtk
- Sucker Punch
- Brave Bird
- Superpower
- Roost
I left the IVs on because as Enoch-117 lamented on it helps with the recoil. However I moved the Evs from Hp to Speed.
Christian (Zoroark) (M) @ Choice Specs
Trait: Illusion
Shiny: Yes
EVs: 252 Spd / 252 SAtk / 4 SDef
Timid Nature
- Trick
- Dark Pulse
- Flamethrower
- Focus Blast
Swapped from Night Daze to Dark Pulse to not hint that it's Zoroark.