The set primarily includes American born players on American teams, but the Toronto Maple Leafs make an appearance with Auston Matthews being both card #1 in the set, and a special bonus card #16 that usually only comes with a purchase of UD cards, but since I've been a regular at my shop for 17 years, and they had no more hockey cards to purchase, I got one of them too.
The set is not just current players, there are retired legends as well. There are also some super rare autographs as well but I was not lucky enough to pull any of them.
One thing to watch out for, about half the cards I pulled had damage on the back, this was something done at the UD factory, because of the fact that the cards underneath them did not always have damage.
Cardboard History, where I'm going to copy and paste the majority of this post and then build on it.