Its unique alternative win condition simply makes you win the entire match automatically
For the longest time this was thought to be an error and done by accident, but thanks to the info presented in this thread by @styluspt , we now know it was most likely intended as the first English Secret Rare card instead
Rebecca cards often reflect her defensive nature and ability to withstand attacks
This wasn't a very relevant card because of its drawback, but, on the other side, it became very valuable to Mewtwo collectors and Team Rocket fans because of its illustration
Duel Monsters, the series still finds itself embedded in the online sphere, especially through memes
--- If you want to see what the deck might look like with those 10 cards added, Ive put it up on Archidekt, with 10 potential cuts that you can see here