If you have a favoured, physical deck youd like to take for a test run against players all over the world, importing it into MTG Arena is a great way to do it
Collectors Perspective: The impact on collector value is more nuanced
Keep up with community forums, watch YouTube videos by experienced MTG card authenticators, and read articles from established Magic websites
(Poke-BODY) [3] Slash (50) [RRRRR] Burn Down (200) Discard 5 R Energy attached to Charizard ex
PokmonTCG Onlines AI is relatively easier to deal with, so you can use it as practice
On that subject, theres also Thryx, the Sudden Storm, who is a five-mana blue 5/5 with flash and flying that makes any spell you cast with a mana value of five or more cost one less to cast, and stops them being countered too