As a six-mana 'walker that can keep the cards flowing and has a nasty ultimate, she is pretty potent
Unfortunately, model training requires a lot of resources, so we do charge for it
If all are printed equally (which is generally assumed), you have a 1/120, or 0.0083% chance of opening the $50 mythic
For deck testing, Discord, Lord of Disharmony MTG proxy is useful when you want to see whether your table enjoys the cards randomness, whether the deck needs more protection, and whether Discord creates fun gameplay rather than four people reading random card names into their phones for twenty minutes
It can work in decks that run Thassa's Oracle or Laboratory Maniac as win conditions, as you can easily deck yourslef with the help of Hypnotic Grifter
As a part of the auction, McKinnon also announced a fantastic gesture