Well, at this point, the Serpents Fang is relatively useless, except for those occasions when killing massive amounts or humanoids is imperative and the poison area damage comes in handy. I was playing today and found one in my house and figured it may be a cool idea to give the Serpents Fang an inherent infectious strike bonus. Something like a +2 to the level of poison applied to the blade or something, with the max achievable poison level being level 6 (or maybe even a new level 7 achievable only by the Fang?). It would kind of be cool because it would give a nice new use to this seldomly used weapon, and kind of plays into the whole idea of a "Serpents Fang". Eh, just thoughts.