Prismatic Strands is a Pauper staple, effectively acting as two fog spells in one to help win aggressive races
Forcing an opponent to lose a card can certainly slow them down and frustrate them especially if they have been holding on to a specific card for several turns
These have been around since Dark Ascension and have cropped back up in almost every set featuring double-faced cards, but now theres a commander that wants you to put them all in the same deck
(Although I should note that we do push these decks to fringe levels every once in a blue moon.) Utility discard cards, on the other hand, do not necessarily promote the discard decks unto themselves (although they are used if enough resources for the discard deck exists)
Here are your choices: [4] Buy packs or booster boxes and build a deck out of the cards you open
The deck box is also a real box that you can put fully sleeved decks into, unlike some the old Commander boxes