It's not the lost set...
Although Salvation do not have all the cards...but who cares...it stills have 30 something...
http://www.mtgsalvation.com/spoiler/coldsnap/Can anyone say, other than I would get 4x Adarkar Valkyrie (sorry, Mizzet, you fall out of my flavor), the other cards pretty much...suck?
Theres definately some odd card effects and interesting flavour to some of the cards in this set,Haakon seems fun alone as a reanimating 3/3 and cards like Panglacial wurm have interesting effects.
Still not many cards have been revealed yet so its still early days on knowing if the set is bad as a whole,theres definately already a few cards that I would of liked if they weren't to expensive to cast etc.
I play Type 1, so the set is expectedly unimpressive to me.
It's always been obvious this was never a "lost set", considering how the modern R&D team was behind the set from day one.

Mono Green Control just became viable in Type 1.
I dont really like the set alot but from my understanding [i sold my valkaries already] it not really impacting the game a whole lot.
heck i heard they didnt even make alot of the product, either that or the store i buy from just wants us to buy their product.