custom playmats and card sleeves Playmat 14" x 24" Custom Card Sleeves - Edge-to-Edge

That said, some of these preconstructed decks are better than others

Bulbasaur & Magnemite Wonder Pick Event Part 2 (ended) Meowth Wonder Pick Event Parts 1 and 2 (ended) The Meowth Wonder Pick event included specially marked Chansey and Meowth promo cards, and appeared as a Chansey pick in your Wonder Pick list

Also, depending on what you sent, your opponent cant respond with cards of the same type (monster effects, spells, or traps), which can limit their options though it doesnt make the card completely unanswerable

Information lost upon being flipped face-down[] When a monster is flipped face-down, it will lose some specific information/applications on it [1]

Even if its just a standalone draftable set, I see it was a way to bring new players in in a way that isnt too jarring to the Magic Multiverse