[casthaven]Nessian Asp[/casthaven] is the obvious gold standard, but the game warden compares fairly well
It's similar to the previously mentioned Tember City in this regard, but this one is far less hostile to the general flow of gameplay while still being interestingly disruptive
The best way to do it, however, is to look at the top performing decks right now and figure out which are going to be the biggest winners from the rotation (which will get stronger as a result) and which will get weaker
Shadow of Mortality is my favorite art from Capenna
Moreover, Samwise Gamgee has enabled new infinite combos with Cauldron Familiar and a sacrifice outlet, while Sauron's Ransom provides card advantage for Dimir Control
This allows you to pair Clefairy with powerful Psychic-type attackers like Latias ex (which is one of the best Scarlet and Violet Pokmon cards) and do major damage to Dragon types