FusionEuphonium

Hey guys, this is my first post, so a little nervous but here goes. So, you know that brief overview on the back cover that all Sanderson's books have? Well, I was reading the Way of Kings one, and this caught my attention. Unlike every other non-Stormlight Archives book he's written, the overview on the back cover for Way of Kings is written in the first person. Now, this question has been nagging at me for weeks...who's the narrator? I briefly considered Khriss, but the amount of times "us" is used seems to indicate a native inhabitant of Roshar, or at least someone who's been there long enough to consider him/her/itself one of Roshar's people. I considered it possibly being the Stormfather, but who would "we" be, who else with him? The narrator says that the "magics of ancient days can become ours again", and surely the Stormfather and whoever might be with him in that "we/our/us" haven't lost their magics entirely...of the four characters mentioned, the surgeon, assassin, liar, and highprince (pretty obviously Kaladin, Szeth, Shallan, and Dalinar, I think), one of these might redeem this ambiguous "us", and one will destroy "us". I doubt any of those four could really destroy the Stormfather, nor any higher power--Honor, Cultivation, and Odium are discounted because of this, I think. So, who is the narrator? Any thoughts or ideas? I can't imagine this wasn't intentional, knowing Sanderson....