Memorized decks, repeating lists and other memory feats come and go in the fickle world of magic. RIght now they seem to be popular, possibly due to The Chinese Virus and virtual shows. I’m, personally, convinced that virtual shows will vanish like a fart in the wind when people finally wake up and realize many of the politically based protocols are pure cosmetic theater with no basis in science. No one looking at the numbers can reasonably deny this.
https://thinkersplayground.com/ is a wonderful site exploring memory systems. I’ve particularly chosen this site, as it has some very good advice when memorizing a deck of cards.
Here’s a handy pdf file that I’ve found helpful in memorizing the Mnemonica stack: