I know this might sound a little wacky but this came to my mind when Cedric. The points may be a bit far fetched but consider them for a moment .
If you notice unlike other elves he has a kind of golden brown armor kind of thing beneath his clothing.
Also if you sided with Iorveth in ch 1 and chose to help him in ch 3 instead of going to save triss, you would know that more powerful golden dragons can see into the future . And cedric has visions, he even tells Geralt how he would recover some of his memory fighting the wraiths in the eternal battle quest in ch2. (if that's not looking into the future I don't know what is)
Add to this the fact that he more or less neutral b/w elves and humans ( he cares more for the bloody forest than elves), and he's really old even for an elf, I think him being a golden dragon is quite probable.

not convinced

I very much doubt that.

Why would he let himself get killed for one? Or, why would he be masquerading as an elf when he could be whoever he wanted?

You're stretching very far my friend.

i dunno may he was too old and tired of life or whatever.
What do you think is the reason for his visions and how he was able to tell Geralt about his future?
Is he an elven sorcerer or do all elves have this kind of power but is dormant in the rest ?

He is a source, that's why he can see the future...

The elves have lost a lot during the past few centuries; they used to have more powers. Cedric is a very, very old elf. It's possible that he has powers that the younger elves no longer have.

If you played The Witcher 1, you know that Alvin had visions, and if you've read the books, you know that Ciri did, as well. It's possible that Cedric has some of Lara's blood; perhaps he's even a Source.

yeah, i guess that's more probable than him being a dragon

Besides Saskia is a Gold Dragon as well (or at least a half-breed version) and she doesn't see the future, so there's nothing indicating that visions are an inherit trait of Gold Dragons (at least in the games, haven't read the books).

SPOILER

The only gold dragon in the books is Saskia's father (http://witcher.wikia.com/wiki/Borch_Three_Jackdaws) portayed in The Sword of Destiny novel collection and if I remember correctly he had no such abilities.

FYI, spoiler tag doesn't do much good when the title itself could be a bit of a spoiler.

Don't know about the books, but Saskia says so in the game.

I though Cedric was a source, I think even Triss explained that he had the elder blood and the reason he drank was to forget the visions just like Alvin had visions in Witcher 1. So Saskia's father was a dragon damm I didn't know that.

When the topic title is a spoiler in itself is there any reason why you should mark it as a spoiler? It's already too late...-.-

Yeah, I know.
And topic title was really unfortunate but because of that I felt free to post some additional spoiling info.

I personally don't mind this bit of spoiler is not like your telling me the end of the game.