dukkhasatva asked: You told you wanted the Spirits in Dark Ascension have more mechanical cohesion. At what point in design was this goal formulated? Why didn't you change it in Innistrad? Don't you work far ahead enough to change something about the large set when you're working on the small set?
Designing a large set has a lot of moving pieces. There’s always something that falls between the cracks. When that happens, you try to pick it up in the first expansion. That’s exactly what happened with spirits.