Hello again! Back with the refined version of the list, having taken some Reddit suggestions to improve the Giratina matchup. I've added a couple V Guard energy, and a Scarlet&Violet Klefki to give me the time to set up a Serperior with a V Guard, taking me out of the 280 range. Here's the old list - if you have any questions about why the list has changed please feel free to comment: https://pokemoncard.io/deck/post-rotation-serperior-vstar-cheryl-loop-37429.
Proxies -- ADAMAN for the new Scarlet&Violet ARVEN
KLEFKI for the new Scarlet&Violet KLEFKI
LOST CITY for the new Scarlet&Violet BEACH COURT