Adding to the value, of course, is the fact that they are incredibly difficult to pull
So cards like Command Beacon (not in this set, but still a popular option) can fetch either the legendary creature or the legendary Background
It only draws cards when it deals damage, but opponents will rarely block it thanks to its deathtouch
A lot of situations are similar to this one, this situation is the most common example, and if youre not sure on whats the correct play, think the play out
The order that the cards are revealed in the pack also plays a part in the experience, opening with an art card - that has no gameplay use, but captures the atmosphere of the set - followed by a land, a combination of common and uncommon cards that each have a connection to the card before and after it