One of my favorite things about new sets is just how open Wizards is about their design processes. As much as the company sometimes draws hate for other decisions, I feel like it's really difficult to fault them on the design front.
That's why I love when new sets come out, and R&D is generous enough to give us a peek behind the curtain. Khans of Tarkir is no different, and it's Sam Stoddard of development that gives us the guided tour this time around, showing us the design process and comments on some of the new cards, something he calls "The M Files."
You can find the full article here.