partly it's the tie-ins with third-party IPs, such as Street Fighter, Stranger Things and Warhammer 40k
As for Brawl, the card was removed for simply being played with and winning more often than any other of the best MtG Commander decks
Vision design comes up with the idea for the set, works on some of the new mechanics, and builds the frame of the set
Be warned that if you pursue this strategy (or it just happens passively, which is inevitable to some degree) it will not carry over well to real person drafts in the other queues
It can quickly disrupt an opponents plans by forcing them to put their entire hand at the bottom of the deck, which is useful given how many cards allow a player to draw up energy or put Pokemon cards from their deck into their hands
Chaos Origins (CORI) is the very first Core Booster of Series 14, the follow up to Blazing Dominion