This is the Zizaran unique, but that's not the right base type for it, and it's not functional yet. That one will be eventually be released, but I'd advise against looking for unavailable uniques and getting excited about them, because a lot of them are abandoned designs that won't end up in the game for various reasons. We are adding a lot of new uniques in 0.8.3, but I don't think many, if any, of them are represented in the files of the current version.