Unless I'm misunderstanding what Hanni said, this all occurred before the game began and before anyone had their hands. I don't see how the game state would be disrupted by a player noticing "Hey, I accidentally left a card out, let me shuffle it back in and then you can reshuffle it, sorry for wasting a little of your time." It certainly doesn't seem like something to get a game/match loss over, nor does it seem like something to involve a judge in when there's a fairly simple resolution: saying "sure, you can shuffle in that card that I know you removed from the game last game, because we haven't even finished shuffling yet anyway, so that we can get on to playing this card game we are here to enjoy playing." I guess I'm really out of it when it comes to this kind of event though, people are probably so bloodthirsty when it comes to genuinely cheating that you have to be pretty nasty about calling over judges just to be safe.

Very nice job, I've been tinkering with UW fish on and off for a few years, which gradually became UWb and every time you update I find that I'm usually making the wrong move by diverging from your lists. Too bad you got screwed day 1, I can't believe someone would be such a jerk as to call a judge over for that. Keep working on the play mistakes though, I know from experience that this deck can go horribly wrong when you forget an important upkeep, mis-stack from a cantrip, or otherwise defeat yourself when the opponent can't.