They put them in whatever order they wish, and do not need to reveal the order
Collector Boosters are worth it if you specifically want foils, alternate art, showcase cards, borderless cards, serialized cards or premium treatments
Commander, on the other hand, is chock-full of this Ice Age blue enchantment, and it's probably one of the most-feared turn-1 plays a blue deck can make
Most existing Pokemon decks will be forced to swing into them twice in order to knock them out, while a premium will certainly be placed on attackers capable of toppling a Mega Evolution in a single blow
Discard a number of cards from the top of your opponent's deck equal to the number of heads
Not only that, but it can permanently take care of a problem Monster that is trying to be brought out from the Graveyard