Most people end up mulligan-ing around three times with loose mulligans rules, and while this can be annoying, social pressure usually encourages them to explain what elements of their decks they're running with
You can edit all aspects of the card, from the name and mana cost to its type, abilities, and flavor text
The Master Ball variants, in particular, are exceptionally scarce pulling a specific Common, Uncommon, or Rare card with the Master Ball foil pattern is about as difficult as pulling a specific Special Illustration Rare
Definitely a complex and elaborate software , of course, but in the hands of experts it guarantees an improvement in business activities
You probably have creatures or other dead cards in your hand if youre behind on board