5SA = Five Set Artisan, a format in which players choose ONE set from the list of all standard-legal sets from Magic's past or present as their deck's MAIN/CENTER set, and then count 2 sets UP, 2 sets DOWN, and that's their 5 set-long available cardpool, from which they then build Artisan-format(Commons and Uncommons only) decks of 60 cards to play against each other.
If your deck's MAIN/CENTER set doesn't have enough standard-legal sets either above or below it(most likely because it is a very recent set or one of the very first ones), your cardpool is either the very first 5 standard-legal sets or the latest 5 standard-legal sets.
This is an experimental format. I haven't exactly exposed it to the public yet either, but I suspect it might have incredible casual-level, or heck, even competitive-level potential.
This deck is focused around the Cycling mechanic from Ikoria: Lair of Behemoths, specifically in conjunction with Improbable Alliance from Throne of Eldraine AND Ominous Seas, just to keep things spicy and not just be a yolo-Flare deck. It is currently Centered on... I'm not really sure. As long as the Center includes Ikoria and Eldraine in its set selection, it works for this deck.
