An astral Lantern Service
What does this upgrade do?
 Quite simply it takes and puts Unique and very hostile guardian in charge of protecting your lantern to where nothing can ever come near it this guardian is taught all sorts of black magic to repel and push back anything that could try to impact your out of body experiences. This is a creation so it is trustworthy this isn't an entity that would go out of its way or go rogue.  Their only task is to protect your lantern to where no one can ever get near it other than you and those you have given explicit permission to.