I’m not sure about Zayle. But I do know for a fact that Whizbang gets updated every expansion (I believe 1 of the older recipes gets replaced by the new one). Since Zayle and Whizbang are basically the same card I would guess the same goes for Zayle but I’m not a 100% sure on that one (maybe zayle always give you decks that are somehow related to these particular sets for flavour?).
I’m not sure about Zayle. But I do know for a fact that Whizbang gets updated every expansion (I believe 1 of the older recipes gets replaced by the new one). Since Zayle and Whizbang are basically the same card I would guess the same goes for Zayle but I’m not a 100% sure on that one (maybe zayle always give you decks that are somehow related to these particular sets for flavour?).
edit: sloppy grammar