Gentleman Xander give us details! what skin, what mob, favor, waht build, full moon, in what direction were you looking, did you bring any sort of luck totem?
I reflected the moonlight off my waxed butt to ensure all the luck would be concentrated in one moment. Jokes aside, it dropped from a beetle in NF.
If it was a rain beetle in Garden of seborhin it might have been level 24, since both 20 and 24 spawn there apparently.