Normally, Universes Beyond cards are reprinted with more MTG-appropriate art and names at a later date under the Universes Within imprint
Charizard Evolutions Reverse Foil PSA 7
However, this is a glass-cannon approach and likely inferior to the grindy sacrifice plan in most games
Knot the thread, but do not cut it
Collect Rare League Cards by revisiting Gyms and old Rivals If more Pokemon battles are what you crave in the post game, your best bet is actually to journey back to the various gyms where you'll find some all-new post game challenges worthy of the Champion - all-new raid-style boss encounters with Dynamaxed Pokemon that essentially amount to single-player raid bosses of a sort
However, finding the better chase cards might be a lot harder, and if I wanted to open sealed product, I'm not sure I could