There is nothing better than getting a unexpected mail day and when that mail day is an Upper Deck NPN (no purchase necessary) mail day, you know it's going to be good. This particular one is from the 2013-2014 SP Game Used Hockey
It's a low numbered rookie card, works for me! Doesn't have to always be flashy.
Have you ever received an Upper Deck NPN mail day? What's the best card you have gotten?