Since we're in the midst of prerelease season for Guilds of Ravnica, I've been doing the same things that you probably are: inhaling preview cards on the Intarwebs, reading through set descriptions and reviews, and trying to figure out which guild you're going to play or which card you really want to open (note: it's Assassin's Trophy...that card is gas, kids)
The brackets arent five sets of deckbuilding requirements
If heads, one Fire energy card attached to Moltres must be discarded
Let me know in the comments below, or over on the Draftsim Twitter
The art, the concept, the core attributes are all pretty big
Set rotation will only affect the Core Constructed format, meaning casual players can still play with whatever cards they want