This build contains the fastest possible attack rate in the game (at least im pretty sure it is). Accompany this with a fast attacking animal and... well^^
When I mean fun build, this translates to "somewhat useless" because of no backups. Anyway, here is the skills list:
Critical Strikes 10 + 3 (or 10 + 1)
Dagger Mastery 10 + 1 + 3
Beast Mastery 11
Predatory Season
Locusts Fury
Tiger's Fury
Charm Animal
Call of Haste
Critical Eye
Critical Defenses or Sharpen Daggers
Ressurection Signet
Predatory season is your health source and Critical defenses will be your... well... defense. Your fast attack rate will keep this up indefinately.
The Fastest A/R fun build
Terra Xin
Huckebain
I use this build frequently too!
Great minds think alike, eh?
But I opt for taking out Charm Animal and Call of Haste for a condition inducing attack skill and signet of malice, just in case somebody tries to shut me down with a blind.
Great minds think alike, eh?

But I opt for taking out Charm Animal and Call of Haste for a condition inducing attack skill and signet of malice, just in case somebody tries to shut me down with a blind.
Lambentviper
I prefer the pet because of the added DPS from Pred Season. Oddly enough, ive messed around with this to....but i really got start posting my builds -.-