Reads like the effect you get from the old AD&D Mirror of Opposition so the Demon Mirror could be a variation on that, although I do agree with Mourngryman that it could use a little more explanation - perhaps you should write up and post the item
My only gripe is that it kind of relies on the party being split up (and when have you EVER seen a party split up voluntarily) - not too much of a problem though since even a half-decent GM should be able to engineer this if he really has to
A variation: The demon copy doesn't immediately attack, but instead slips away and heads back to town. He then starts the traditional demonic crime spree (i.e. well into Jack the Ripper territory here) and, of course, our hapless hero is positively identified as the culprit. You now have the seeds of a nice little murder mystery.
Not necessarily EchoMirage - depends how you run it
The trick is the run the crime spree over a period of time, perhaps a LONG period of time - let it build up over the course of several game weeks (or months, or years) - after all no group, however close, stays together ALL the time
Have the atrocities happen in the 'down time' between scenarios, when the group splits up to do all the mundane things of life - this works best if the PCs all have interests independent of the group - e.g. clerics would have temples to run (or at least temple duties to perform), wizards might have to spend a lot of time researching magical effects, etc
If done right (and with a little bit luck), it should be possible to build a really good head of paranoia, even with the PC who's been copied - after all, do you remember EXACTLY what you were doing at 2:33AM a week last Tuesday? - are you really SURE you were snuggled up with that tavern girl? - and doesn't the latest victim look an awful lot like her?
All it takes is a little imagination and a group that is prepared to role-play Go to Comment
I think Nobody's and DragonLord's comments of October 20 are the combination. Add some classic murder mystery to the classic roleplaying scenario with an evil twin. There is real potential there, I think. Works best with an experienced -- and perhaps bored -- band of players, since it is different. Go to Comment
Hey this is a great submission, with a great idea! The duplication thing itself isn't new at all (doppleganger in 1st ed. d&d basically offers the same situation) but the way you propose to manage it is awesome! Go to Comment
A solid if confusing idea has been done but I like how you set this up, limiting Meta gaming and adding an element of shook. I do however believe that the players may not always enjoy the loss of character control Go to Comment
Meh...I might have to get an account, just so I don't have to have the name "Barbarian Horde"...
Anywho, I think this item is quite unique in idea. Toss it to a character, and watch the humour unfold...The implimentation might be hard though.
One question: You mention charges, yet say the collar has a set limit to how far ahead it can see...Is it a direct ratio for how long (not how far) you can see the future and how long you've worn the collar before-hand to build up "credit"? Go to Comment
That is complicated. It would seem to be difficult to determine what is going on to a player who acquired this in a roleplaying game unless the DM were to provide some background or explanation. Probably I would not be good enough to moderate the use of such an item without really screwing it up, so I will leave this little goody to the experts. Go to Comment
Actually, who needs a back story for this. It does not need a backstory. The origins can be lost to time. It just needs some legends or fairy tales related to that item. Perhaps the item has the same sort of legend as the Emperor's New Clothing. That way, only foolish players who did not read the campaign's setting packet who would be caught by the item. Go to Comment