It feels like a rather heavy one as well. On one hand, should it only open to that specific world and cause more troubles with the skeletons it would not seem a prudent thing to do so. On the other, if it could be used to gain control over our own situations. Of course there is always the third option of not knowing what it is capable of and having it stolen again if it is found this time for nefarious reasons. Perhaps it is better to know all it is capable of to be prepared.