I also found the Palborough key from the Scimitar scorpion while farming in the mines. It appears in the same spots that mine scorpions spawn on the third level, its just random as to which one it is.
i saw this once, it was a decent match to me, i was a lvl. 20, so i took it on, i got 2 items, the sythe that guy was talking about and the srorpion shell, but i had to use 2-hour ability, it was, freakily hitting me for atleast 10-30, most of the time 19 or 25, luckily i had mnk subbed, so i had like a 50 hp boost to my 341 hp, although i had to kill it twice, another one spawned right next to me, luckily a lvl. 60 whm passed and casted protect, cure III, shell, so i escaped with no prob, i got a whopping 400 xp in all!!!!!!!!