There were a couple of cards that I submitted to the custom cards subreddit that were later printed almost exactly like I posted them. I mostly remember Foundation Breaker (mine was 2GG cost and 3/2) and Damn (mine was 1BB // 3WW for the costs)

I mostly dislike it for requiring outside game pieces to function, making it overly complicated, all for trying to fit the lore into the mechanics too hard. Similar to the problem I have with dungeons and initiative.