I've seen a bunch of Prerelease decks so far, and it seems like there is a possibility to get up to 3 Commons or 2 Uncommons as multiples in a deck. Multiples of cards is often a good thing in LCGs for consistency, but with the random decks we don't get to pick.
What cards would you love to see multiples of when you open a decklist?
My first Prerelease deck had triple Dust Pixie in it, and after playing a bunch of games with it I'm extremely happy to have that as a set of 3. Endless Whispers seems good too, and Bulwark seems like 3 of that guy would be really great as well.