In the case of Avatar, the 15 most expensive cards would cost an eye-watering $4,230 to purchase, and that's just one copy each and without considering the most expensive card of the bunch, which goes for a staggering $5,300 on its own
Maybe its because no ones cast a single-target removal spell in my games in the last few years (exaggeration), but this thing just always seems to sit in play and nug everyone for 10-15 damage each game, and thats not even in wheel decks where this is a primary wincon
Singleton Commander was a lot slower in pace seven years ago
Unlike Dark Confidant, Tarmogoyf backs up its reputation with a ton of high level play
It looks like overall mechanics will have us playing out of exile a lot more than we may be used to, favoring on the fly card advantage to create that classic speedy Ninja atmosphere