Shiftry also gives you Leech Seed protection. So does Cacturne - speaking of which, there's another Grass/Dark type you can use.
Tyranitar@Lum Berry
EV: 129 Att, 252 Speed, 129 Sp Att
Nature: + Att/Sp Att, - Def
Dragon Dance
Aerial Ace
Rock Slide
Fire Blast
Anti-grass version, also can take down Jumpfluff easier with Rock Slide
Murkrow@Quick Claw
EV: 252 Att, 252 Speed, 6 Def
Nature: + Att, - Sp Att
Drill Peck
Confuse Ray
Perish Song
Fly
Get Umbreon to Baton Pass Mean Look, and abuse Perish Song + Fly if you wish, or Drill Peck for SE damage. Insomnia gives you Spore/Sleep Powder protection, great for anti-Breloom/Venusaur/Parasect/other Sleep users
Umbreon@Leftovers/no item
EV: 252 HP, 129 Def, 129 Sp Def
Nature: + Sp Def, - Att
Mean Look
Baton Pass
Thief/Double Team/Charm
Charm/Moonlight
Steal someone's Leftovers, or abuse Double Team/Charm for physical attackers
Houndoom@Lum Berry (Note: Early Bird!)
EV: 252 Speed, 252 Sp Att, 6 Sp Def
Nature: + Sp Att, - Att
Crunch/Pursuit
Flamethrower
Torment/Sunny Day
Taunt/HP Ice/Rest
Ludicolo is by far the worst enemy for Houndoom, being a Swift Swimmer and having resistance to most of his offensive moves. Consider Sunny Day to assist sweeping/water protection, or wait for a Chlorophyll user to set it up for you. HP Ice is if you want more than one SE attack to abuse.
Shiftry@Quick Claw
EV: 252 Speed, 252 Att, 6 Def
Nature: + Att, - Sp Att
Explosion
Quick Attack
Aerial Ace
Brick Break
Shiftry is naturally faster than most Chlorophyll users (apart from Jumpfluff), so they'll be able to go faster especially if Sunny Day is up. Go boom on tanks like Ludicolo or Venusaur, since it will do more damage than Aerial Ace. Leave Brick Break on for Cradily.
Sneasel@Salac/Liechi Berry
EV: 252 Speed, 252 Att, 6 Sp Def
Nature: + Att, -Def
Swords Dance
Aerial Ace
Brick Break
Agility
Agility gives you equal Speed with Sunny Day Jumpfluff. Blizzard isn't going to be hurting anyone, not with base Sp Att 35, just stick with Sneasel's Aerial Ace, leaving Brick Break on for anti-Cradily/Cacturne/Shiftry purposes