This is evident even on their front face, as Elesh Norn has the ability to completely stall a number of aggressive decks
Many players try and fit Reliquary Tower into decks where it isn't essential, creating high demand at all times
However, please be very careful when handling them so you don't accidentally mix your opponent's cards into your own deck
cEDH has been a midrange format for a while now, and Nadu has taken the meaning of value engine to a whole new level, turning even the most innocuous of mana dorks into a potential source of card advantage
It's a cautionary tale of how good intentions can get you to a bad place
In other news, it says here that Brago will probably see too much Commander play over the next few months, and expect to see so much of him that your throat will explode into a vomitous mass in dread of Commander night at your local game shop