Replacing cards that are rotated out…

I'm a bit late to the party with the deck I want to build IRL and wondered if there were any resources online that gave suggestions for cards that are soon to be rotated out?

I have had a decent amount of success online using a modified Chien-Pao deck and want to get all the cards to make it. I've started buying up some singles and it struck me that a fair few are marked 'F' which will be rotated out soon-ish.

I'm happy buying them and using them for the timer being but ideally would like to try and find cards to replace them.

Cards like Irida are key to this deck's success. It would be good to know if I could find alternatives.