And for those who can't be bothered to click the link:
There are two versions of the collection: Regular and Premium, Premium is exclusive to WPN stores. Only difference is that premium is all foil.
The collection contains eight cards, only six of which are green, the other two are colorless.
They will both be available on December 8th.
The cards are:
All cards have new art.
All cards except Freyalise and Sylvan Library have flavor text.