OK, my ratings aren't always the best, but I hope my humble opinion with help improve your team.
Sage:
Excellent, excellent. My only suggestion is Seismic Toss for the attacking move(will do good, Substitute ruining damage at LV 100), but Charge Beam would work too.
Vervain
Jolly Nature lowers Special Attack, so either change the Nature or the set. I suspect you may not want to switch your Lucario for another, so I'll give you a physical set, but if you are willing, exchange it for a Timid or Modest Nature Lucario.
Physical set:
Lucario @ Choice Band/Life Orb
Adamant Nature/Jolly Nature
Bullet Punch
Close Combat/Shadow Claw
Drain Punch
Blaze Kick
As you can see, I left a lot open for your personal preferences.
Fennel
Nothing to add here except that you should consider Rest+Chesto Berry. Leftovers.
Absinthe
Go Swords Dance or Hone Claws, not both, as Absol has trouble setting up before being KO'd. Try this:
Absol @ Focus Sash
Adamant Nature
Swords Dance
Sucker Punch
Psycho Cut
Night Slash/Pursuit/Superpower
The last move is your choice, but personally I would go with Superpower. Pursuit can be great in the right situation, though. I think 1 Dark Type move is enough, so Night Slash is only a suggestion because of the Super Luck Ability.
Thyme
Looking great, but use Air Slash instead of Fly(Special Move instead of Physical), and consider Roost. (I would just give it Air Slash and leave it at that.)
Expert Belt item.
I noticed a Fighting weakness. Last Pokemon should be..
Mismagius @ Choice Specs
Timid Nature/Modest Nature
Energy Ball
Thunderbolt
Shadow Ball
Hidden Power Fighting
Yeah, this set is basically from Smogon, but with Energy Ball. I'd go with Modest Nature.
Good luck, and don't forget to have fun!
