The commons and uncommons in Set Boosters tell little stories, and there's always the chance of opening a card from The List
Also known as error cards, misprints are quite rare in the Pokmon TCG, but they have happened, and still do, occasionally, when some parameter or other gets set very slightly incorrectly on a given print run
This is not a tournament
Expect the variations of Sorin the Mirthless to be in demand, especially the Fang Frame variant which Ayami Kojima (of Castlevania fame) created the art for
Well, more than two, but the two we want to talk about are Freyalise, Llanowars Fury, and Tyvar Kell, both of whom can spit out tokens among other things
White tends to have the most narrow draw options, with cards like [card]Kor Spiritdancer[/card] or [card]Mentor of the Meek[/card] that fall into very specific deck archetypes