philosophile42 asked: I remember when Zendikar came out, that there was a lot of worries (at least thats how you portrayed it) in WotC that a land matters theme would be good, whih led to Rise. Eing separate from Zen, so if the mechanic wasn't well received at least the big set could move the block in a didferent direction. Is this the same reason for Avacyn being a stand alone big set, and the DFCs in Innistrad?

As I’ll talk more about when Avacyn Restored comes out, originally Innistrad and Dark Ascension we’re going to be their own mini-block and the spring set was going to be a completely unrelated stand-alone large set. But that’s a story you’re going to have to wait for.