Fetch lands! This alone makes the set exciting. Then more mana fixing in the form of the wedge lands, and then more mana fixing in the form of the paired coloured lands. I'm going to have to do a lot of thinking as to what I'm going to take out and add in terms of land. And the whole set isn't even released or fully spoiled yet!
Anyways on to a more organized breakdown of how this set will impact my cube.