Some Reserve List cards are artificially high as a result, like Juzam Djinn, whose super high value is clearly due, in part, to the fact that it wont be reprinted
But with Heart of a Duelist in play, if you believe that the card you need to draw is the ninth card from the top, you can draw that card instead of the one that's on top of your library
Drawing cards is already a good effect on its own, but c ombine it with minimal cost and you get a card thats straight-up broken
Disclaimer: This data is compiled from our own card pulls and other third party sources, so it may not be accurate or reliable
Regarding cards that are restricted other than banned, they are only applicable in a select few formats where players are only allowed one copy of the card in their main deck and sideboard