Parallels are rare variant versions of the main cards that can be found randomly inserted into packs. In this set there are 3 “levels” of variants, that increase in rarity. The Heritage Parallels format the art to look like the original 1962 series; the Concept Parallels show the artists original sketches for the final paintings; and Foil Parallels simply print the cards on reflective silver foil stock.
Chase cards, are simply additional cards that are harder to find in a box.
“Hits” are super rare cards, usually 2 per box, and typically have a very unique attribute: in the case of this set, our “hits” are original sketches (hand drawn by one of our specially selected artists), artist autographs, metal cards (reproducing the original 1962 cards) and letter-press cards (hand-pressed premium cards, and using unique woodcut style artwork).
Inserts is an umbrella term that refers to any card that is not a common base card, and includes all of the above.