Either they block on walls or defensive dorks and put them in the bin for you, or they trade with something fairly large or you draw cards
Ten more intermediate decks : Progressing through the Mastery Tree will unlock ten additional decks for your collection
Generally, if your card is between whole numerical grades but closer to the higher one than the lower one, itll be given a half point or + designation
Remember that prices are subject to significant changes after the set fully releases, either because more product is open, or because the hype dried on some cards, while some newfound gems broke some MTG format
Youll probably have heard about burn decks
Rare Cards will be found at the rate of at least one per pack, though you may get two in a booster if you dont get a second card thats more rare than a card denoted with an R