Lets look further
It takes too much setup for my liking, but with the right amount of support it could do some work
You can use Yuna, Hope of Spira, to reanimate them for free with a finality counter, or Rydia, Summoner of Mist to reanimate them by paying their mana cost
The best pack type for you will depend on your goals with MTG, as each pack varies in price, potential value, card pool, and more
That option is rarely taken so I give an advantage to cascade as the stronger mechanic, and the fact that Magic R&D is less likely to bring it back makes it more rare and hints that it is better than discover
In fact, the mix of old and new, the references and in-jokes, and the balance of genuinely exciting new cards with Draft fodder could well mean this is one of the greatest Magic: The Gathering sets in the last few years