I believe he's talking about things like Booster Draft and Sealed Deck.
No idea what your on about. Care to explain?
Booster Draft = Each player opens up a booster pack of cards, takes one card of their choice from the pack without showing anyone, then passes the pack to the next person and receiving a different pack in the process. Then the process of picking and passing repeats until no cards are left in the pack, in which the players open a second pack and repeat the process (and also third/fourth/fifth, etc. packs as necessary). Players build decks using the cards they drafted, plus basic resource cards.
Sealed Deck = Each player receives a randomized selection (with a set amount of cards from each rarity) of cards (i.e. a Vault that they aren't allowed to choose beforehand) and build decks with these cards and basic resource cards. Kind of like War, but without the "choose your vault" and discard/salvage parts.