This is the only place I’ve seen a pic of the book at (along with one of the stones).
http://www.kidswb.com/series/thundercats/power
Not sure if it’s been said in the actual show, but they do call it that in the website I just linked.
Yeah Jaga said in the first episode “Only the eye of thundera, the source of our power knows if there is indeed a king inside of you”
The middle one looks like the eye of Thundera so maybe Mumm-ra will found one or two of the others to make the sword of plun-darr, or maybe each thundercat will use one of those stones.
This is the old 1st Concept Art of The Tower of Omens (With the Book of Omens and The Eye of Thundera “stone Version”).
http://fotos.subefotos.com/7ae8a5fa2d542e04021f4607efdb4f36o.jpg
Book of Omens: Lost to history, the Book of Omens is believed to hold the secrets to Mumm-ra’s powers and the origin of the Thundercats.
Eye of Thundera: The Eye of Thundera is the core of the Sword of Omens, making it the most powerful weapon on Third Earth.
The Magic Stones of Legend: ??? As you can see they look like de Eye of Thundera but this is only a Concept Art.
Way back in the thread. But a totally good point.
Yep if Mumm-Ra hadn’t been released, I think Jaga would have allowed the book to remain lost.
I think the head Clerics were probably instructed not to say where the book was until Mumm-Ra came back. Like instructions passed down from head Cleric to head Cleric.
If that’s the case, I think Jaga’s not very good at passing along info because his description to Lion-O was very vague. How does Lion-O even know if he’s going in the right direction?
He knows where the Book of Omens is. Jaga said all of the answers were contained therein.
Who knows? Lion-O? How does he know?
If it consists of a single page with “42” printed on it, I’m gonna laugh my butt off.
Do you seriously think they’d do that?
Oh, and it’s impossible to laugh one’s butt off. 
Jaga told Lion-O that the Book of Omens lies at the foot of the setting sun whatever that means.
Maybe Jaga knew where it was but since they were bieng persecuted, he didnt have time to give very detailed directions, just something basic that he knew Lion-o would still find it. The sun sets in the west, so he told him to go west and to follow the direction where the sun ussually meets the horizon when its setting down.
That’s kind of my point, if he knows the actual location, then his directions stink. How is Lion-O supposed to know what that means or where that is? Does he go west towards the setting sun? Well, which angle west if that’s the answer? I just find it confusing that Lion-O has decided to look for the book with that as his only clue. It’s like looking for a needle in a haystack.
the angle is at the point where the sun meets the horizon, thats the direction he should go when he goes to the west
But at what time of year? And at what point on the planet where the sun sets? Oh so vague. Oh so broad. :eek:
He had like half a minute to give instructions on the fly. It’s not like he had a written map in his pockets to give Lion-O that says “go here, then here, then here.”
Ah so the Eye of Thundera is a Key-stone?