Heck, I still see packs from War of the Spark hanging on the end caps at my local Walgreens
Rotation, by default, rotates several sets out of play in regular formats, meaning you can't use cards that have rotated out unless they've been reprinted
Still, while blues history with this is all about changing costs and not much more, black has a more detailed history, which gives us clues into how WotC views different resources and their values
Plus, the fact that the top five cards in this set all get you your money back from ripping an ETB is awesome for the value side of things
The Endless Sands card also gives the player many possible routes to take, and thats what we like to have in a game, although not without costs associated
The key thing here is that you obviously want to hit three wins, but we respect the rush of trying anyway