Dump of Mifare classic keys to use within Flipper Zero. Read the installation guide.
TTC Card Key dump. Not everything could be bruteforced.
Keygen. Random assortment of letters and numbers. Takes a lot of time to unlock (over a day maybe). Unknown chance of card unlock. You probably should use something like RogueMaster if you need to read any card.
I don't have any exactly. All of the NFC cards around me authenticate via UID. If you can, you can't.