MTG has many mechanics that revolve around artifact numbers and density, so we have not only affinity cards here, but also improvise, metalcraft, and other artifact-matters mechanics and cards
You play lands only during one of your two main phases and can only play one per turn
Urabrask, Heretic Praetor is a great creature that I think is being slept on right now, but hes at his best here
Bloomvine Regent Red often provides the most upside for dragon decks, but the green Bloomvine Regent can also give a bump to that strategy
The third outcome is the one I hate the most
There are plenty of other great reprints between Special Guests, Imagine: Critters, and reprints with new art in the Commander precons, so I hope that your some of your favorites were included as well