I think the danger and uncertainty is supposed to be part of it in purpose? Still if it not, I've a tweak on your idea to suggest?
This sounds like a lot of extra work for the DMs as they would be called in to supervise constantly. What about the same idea with the gargoyles but no DM required for PvP but ICly word is spread that dispensary murder is disfavored and OCCASIONALLY a DM possesses one to show this disfavor? Thus people can still murder and such and it is not "safe", without needing much DM time but also reducing the murders?
This sounds like a lot of extra work for the DMs as they would be called in to supervise constantly. What about the same idea with the gargoyles but no DM required for PvP but ICly word is spread that dispensary murder is disfavored and OCCASIONALLY a DM possesses one to show this disfavor? Thus people can still murder and such and it is not "safe", without needing much DM time but also reducing the murders?