I dont know under what circumstances these cards would go up independently of each other but they clearly are and if all we did was look at spread we could probably make a few educated guesses about future price increases irrespective of EDH use
While I'd love to provide concrete examples, we're still in the early exploration and prototyping portion of this project, so I want to be careful about setting expectations that are later crushed because the path we settle on is different than our current blue-sky concepts
Cards like Switch or Escape Rope can bypass Retreat Costs entirely, allowing for free switching, and including such cards in your deck is a smart move
If you do, return it to the battlefield under its owner's control
It's because NFC's impact each of these groups slightly differently
The basic idea is to use abilities like Vivi Ornitiers to deal your opponent 1 damage whenever you cast a noncreature spell and then start slinging noncreature spells like its going out of style