I am, on one level, amazed that Wizards of the Coast is continuing with its disastrous attempts to sell cut-sized Magic the Gathering boosters
(2022-06-10) Choose a Background is a variant of the partner ability
In this The More, The Merrier deck, players still focus on getting Urtet out early, as well as building a healthy Mana supply via ramps without unnecessarily using rare Magic: The Gathering cards
Each Set Booster contains a foil-etched legend or Background card, as well as another legend, another Background, a rare or mythic rare, a traditional foil, and two wildcards
Honorable Mention #1: Shapeshifters No, they don't have too much in the way of tribal cards (they do have Crib Swap and Nameless Inversion, though )