Yes if you're lucky enough to be in a server where others are selling soj then it might spawn. As far as killing it, pretty much anything that deals in magic or physical damage shouldn't have too much trouble as long as they can dish out a decent amount quickly (unless your elemental damage is backed by a nice bit of lower resists one way or another). If you aren't dealing a heck of a lot, a prevent monster heal mod somewhere will help a bit. Try to make sure your own resists are high as well unless you're a hefty tank and even then it doesn't hurt.