Thanks for the compliment - though if you like this style, you should check out some of Captain Penguin's work, of which this is but a pale imitation. To answer the question: yes, I did make all of this myself, if you mean the intro and the puzzle itself. I did steal a couple of quotes:
"Beware the boar, beware the swan/The salt sea bore her body on" is from the Fionavar Tapestry.
"East is east and west is west and ne'er the twain shall meet" is from a poem by Kipling.
"Climb every mountain/Ford every stream/Follow every rainbow/Till you find your dream" is from The Sound of Music.
"To long they delved, and too deeply, till they awoke what lay sleeping beneath its roots" is a paraphrase of a comment made in Lord of the Rings.
The rest I either made up or else are just general sayings (e.g. "Silence is Golden"). Go to Comment
I don't think you're the first person to be thrown for loops on how to rate it, as it had almost 150 hits before there were any votes or comments! That's a great idea about using it as lock to guard a treasure to be opened at any time: if I ever use it again, that's definitely how I'll use it so thanks for suggesting it!
P.S. Yes, I did come up with it myself. However, as with Maranesh's Challenge, I stole a couple of quotes:
The bottom right poem is from The Lord of the Rings.
The top centre poem is heavily inspired by a poem in Memory, Sorrow and Thorn.
The rest I made up. Go to Comment
This one throws me for loops on how to rate it. Did you come up with this yourself? If so, WOW! I can guarantee my players would never figure it out, although it is "obvious" once you've seen it. I could imagine using this as a lock puzzle to guard a treasure that no one had ever opened since it was made or something like that. A big treasure players could get when they figured it out... and that could happen any time during a campaign. And if they weren't getting it at all, maybe I could insert some subtle hints into the campaign...
It's not in character of course (as with almost all puzzles).
Incidentally, another similar (and older) manuscript on which Serafini's was based was the yet-untranslated medieval 'Voynich' manuscript, which is available in scanned form from the Yale Rare Books Library.