Replying to RFID card cloning/encoding

Has anyone here ever messed around with trying to replicate RFID cards? I'm talking specifically with regards to the modern ski pass RFID readers.
Are there different standards, or will the gates at the resort be able to read any RFID card in the right frequency range?
I'm thinking of trying to replicate an invalid ski pass, but information online seems pretty sparse. Honestly idk if I even need to clone/encode a pass or if a blank RFID card will work just as well since I want the gate to detect the card and not open