Your point about countermeasures is well made, and could help reduce it's impact. However a powerful nation could get around some of the measures by forging or stealing watermarked paper and then treating it.
The wax seals and Notary are an excellent countermeasure.
Regarding damage transferral, it was not stated explictly, but only minor alterations such as writing will transfer, otherwise the use as a 'backup' copy is not possible. So, I'd say physical damage (tearing, etc) do not transfer at all, and total destruction like burning will simply cause the other sheet to become somewhat scorched but readable. Go to Comment
An ideal companion item for a spy deep within an enemy is the use of a magical quill which writes illusionary text. In reality it writes a plain-text message which due to the paper not transmitting magic, comes through clear on the other side. If someone were to see the local copy, they would see the illusionary text which would appear as something unimportant.
Spells which accomplish the same task are also useful. Go to Comment
A lesser powered (No magic capturing) version of the Book of Transcription made with this type of paper would be even more powerful, being a 'bug' with unlimited range, though the book would be hideously expensive.
Eg. For a 100 page book with standard (8"x11" - yes I know that is not a medival standard) size pages, you are looking at expending the equivilent of 550lbs of gold to produce the necessary twin paper. This is not even touching the cost of making it into a book of transcription.
Anyone of power would be well advised to periodically checking their library for books radiating enchantment they are not expecting. Could provide much gainful employment for lesser wizards of a trustworthy sort :) Go to Comment
I would think that there is a subtle enchantment placed on the stone, that discourages the simple folk from interfering with it. Or maybe they just register on some level, hidden to them, that damaging the stone would be a very bad idea.
Of course, once someone else finds out, and rushes in to break it up into nice little pieces... ouch.
The scholarly details could recieve more power, if the players find themselves on the opposing side of would-be-miners. What if there is a prophecy, that something unnatural and terrible will happen at the Stone? Unclear as prophecies go, it could be that somebody plans to create a massive stone golem (or few) for some real muscle - and that could be also a real plot.
But there is also the Stone itself - so off with the PCs to hunt for more knowledge about it, and inevitably about the forgotten people of the region. With a few unclean legends of the scourge of their time, or some pictographic burial findings, they should be able to piece the big secret together.
Suitable for groups that like research of this kind, though.
Nicely executed and has a lot of scholarly details (I am not sure where anyone dealing with this would get those, but we move on). The piece is generic enough that it has dozens of uses in dozens of ways.
This one could be a modern or supers submissions as well as just a fantasy one.
The Dragon can easily be swapped out for any similar Mystic Scale monster, all one needs to do is change the meaning of the word Haern. If desired, I can add the dragon as a sub, but there are enough suitable dragons out there to fit the bill. Go to Comment