Negreanu did this on DAT Poker Podcast, Episode #107: https://datpodcast.libsyn.com/nfts-w...st-episode-107

Go to the 21:28 mark to hear the segment about Failla/Mizrachi.

It's not clear if Negreanu was accusing them of simply using the fake cards for themselves, or if they were giving them out to others as well.