sun & moon base set booster box 6x Boxes | Factory Sealed This booster box comes with 36 booster packs with each booster pack containing 10 random cards from the Sun Sun And Moon Base Set

You and your opponent have to reveal what these 15 cards are at the start of your match, but you don't have to make any swaps if you don't want to

We've seen this effect before and we all know exactly what kind of decks will want it, but some more to the repertoire is never a bad thing

He builds a seventh Deck, seemingly based off his Water Deck which is devoted to sealing certain cards so that an opponent will not be able to Summon most of his or her monsters

There are many different archetypes, and each has many different styles of being used

Still, these will give you a good place to start and can steer you in the right direction (mostly toward sweet Elder Dragons)