I rewatched the "movie" today and stumbled upon a detail, which probably already got covered, but something that hints atleast that MoM manipulated the Foretellers - and everyone else who got their hands on a copy of it - even more. Or it's a hint on how the Book of prophecies (and it's copies) are working.
There seems to be more differences between the copies and the original. As you can see on the pictures below in the spoiler, the right side of the book pages seems to be the same. Same symbol on top, keyblade at the same position and the text seems to be the same too, although I was a little bit unsure about the space between the paragraphs.
But the left side is different.
MoMs book shows a shadow, the text is at different places as it's in the copies and the symbol used seems to be the same, but upside down in comparison to Ira's copies (it's hard to tell because most of the time eiter Iras fingers and hand are blocking it or because of the sunlight), where instead of a Shadow a Darkside is shown.
In other words, if the pages in the book aren't getting altered if the future somehow changed and stuff like that - what I doubt since the Forettellers would have noticed that something had changed, because they already had their copies - MoM never gave them a true copy. The shadow missing could either mean, that MoM literally made out of a mosquito an elephant or he left parts out
.
This way all of The Foretellers and everyone after them who read the copies were misleaded to an unknown extent thinking to know the future (or atleast if the whole book is being held vaguely had hints of the future), but in truth they believed something altered.
If preventing altering the history wasn't enough this would be another reason why MoM didn't want Luxu having a copy, because then he could have become aware about the differences between what is written in the copy versus what is really happening.
Going a bit further - and I know I'm stretching this, but the following just popped back in my head - it was theorized that MX had access to one of the copies, because he sometimes spoke as if something was destined to happen (mainly in DDD, if I recall correcty). If there is any truth to this, it could also explain, why Xehanort didn't foresee Sora's meddelings in his plans. The original had him in there, but MoM left him out.
And at this point I checked the Book of Prophecies parts again and stumbled on something more. When MoM went through the book before in order to find the page he planned to tear out, the Darkside page appeared before and looked exactly like the one on the Ira pic. Even more, between this page at it's original position and the keyblade page there were two more pages. One of them was purely with text, the other, the one with the Shadow we see later on the other side, had the Heartless emblem on it. Meaning that there isn't just one 'Lost Page', there are atleast three of them. This would explain why we have on Ira's pic Darkside on the left, because MoM left out those three pages (text, symbol/shadow, 'Lost Page').
I do wonder if this was to cover up Xehanort one day coming into existence and doing his stuff. The Lost Page hinted at a traitor who bears a sigil. Xehanort bears a sigil (or something closed connected to one) in his name and other than the ones of the others like Luxu, his one is the only one which is written big (or am I forgeting someone?) - the same way the sigil looked like when MX showed it in BBS (atleast to me it resembled more a 'X'. The sigil of when Xemnas gave Roxas his name looked similar big). Gula stated it was way to vague described on the Lost Page. The heartless symbol on the symbol/shadow page and it connection to Ansem (and so with Xehanort) could mean that the reason why it was so vague was, because it was described more detailled on the pages before.
Ira was the one who analyzed the book the most (hinted early in Back Cover) so maybe this was also a reason why he wished to see Gula's Lost Page? Maybe he noticed that more was off than he thought at first and analyzing the Lost Page and it's position it had before it was ripped out could have him figguring this out? He must have scrolled through it more than once (when he got it, when he noticed nightmare-chirithy and the scene with Invi).
So in the end, if I stand correct, the traitor described on the Lost Page was Xehanort. This doesn't automatically mean there was no traitor back then in the age of fairy tales. Gula acted sometimes weird (especially when Aced and Invi were fighting and he even smilled at one point, but there was also him turining away from Ava - the one who created the Dandelions - in the opening segment) and someone else in UX could have done something bad too, but none of them had been described on the Lost Page.
In the end this would mean MoM was the biggest traitor to all of them because else, he wouldn't have gave Gula just one page but all three missing pages and started a witch hunt with no witch to be found - that is until they started to suspect each other as the witch.
(PS: I really like how I was able to change the size of the pics. something a lot more forums should have
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