Every official product comes with a Code Card, which you can use to claim their respective items on Pokemon TCG Live
So much so, that keeping your creatures disguised is a genuinely viable strategy
For just two Fire energies and a Colorless energy, Cinderace deals 170 damage with Max Pyro Ball, which also burns opponents Active Pokmon
Crucially, many sit on the Reserved List a publisher's vow never to reprint them
Serrated Arrows might not look like much, but it was actually a very helpful card
If you want to purchase a large number of proxies without the hassle of printing them yourself, Ive found Make Playing Cards to be the best option for custom proxy makers, with the aid of the MPCFill tool