you shouldnt sub something for 1 ability and this isnt even a active ability XD ....its allright it makes stuff drop more esp. nm hunting...but for XPing i would sub ninja and dual weild archers knifes ^_^
Just level it to 15 for Treasure Hunter so you can sub it when farming. Otherwise don't really bother with it more than that unless you want to play THF or have THF sub for use with something other than RNG.
nothing is wrong with rng/thf ......its just sneak and or sneak+trick dosnt work on ranged and thats why most people sub it.....other then treasure hunter that is which will do you good but other people can still lot for the stuff you get luckier in with drops(it will make sense if you read it enuff =D)
better subjob IMO: Warrior=berserk or defender(if situation requires it) Ninja=Dual weild archers knifes(fantastic bonus for rangers) blink ninjitsu if you take more hate then u wanted...