Tested Clawitzer and Breloom in Free Battles and Ranked.
Clawitzer is... not great, but not terrible either. Specs Clawitzer demolishes leads or any switchins with some prediction and its amazing coverage, but more often than not it'll blast something to smithereens, and then die to the replacement because of its low speed and mediocre defenses.
Breloom is AMAZING in a 3v3 environment. My god. With proper prediction and team support, Breloom eats leads for breakfast. Technician Mach Punch or Bullet Seed is nothing to sneeze at, and Spore is useful anytime. Rock Tomb kills those annoying Togekisses and can kill a Talonflame or Pinsir on a switch.
Still sitting around 1750, and I hope to get higher with my new toys. Currently running Clawitzer/Breloom/Talonflame/Kangaskhan/Goodra/Gastrodon. I feel like I should put in a Hippowdon in there somewhere, due to its massive Defense, Ice Fang for Garchomp and Whirlwind for annoying boosters, but I'm not sure who to take out.
Edit: I feel like testing out Life Orb or Specs Accelgor. Something like this:
Accelgor @ Choice Specs/Life Orb
Mild Nature (Outspeeds a lot anyway, outsped only by Base 128s most of which are not relevant, base Def is crap so lowering it won't do much)
Ability: Sticky Hold (Can use Hydration, but Sticky Hold is probably better in general to avoid Trick/Switcheroo users)
4 HP/252 SpA/252 Spe
-Bug Buzz
-Focus Blast
-Giga Drain
-U-Turn
With Bug Buzz passing subs, something like this could be surprising for an opponent. Just need to trade with someone though lol...
Final Gambit could also be an option if you want to be an absolute troll.
Sludge Bomb could be considered to hit Fairies, but Azumarill gets hit hard by Giga Drain, and you wouldn't want to fight Togekiss. The only other common Fairy is Mawile, which doesn't get hit by Sludge Bomb, but who knows, maybe it'll be useful.
I forget, does Life Orb recoil happen with U-Turn? Does it do recoil before you switch out?