I know there's already a thread but I don't think you can bring this up too much...
The Specialization decks are marginally useful, if that, and the Signature abilities a bit more useful, maybe, but the GM is the real person in the group that needs some lovin' and a deck of Adversary cards with multiple minions and such would be really, really useful.
So get on with it and help a GM out...
Edited by FuriousGreg