Regarding missprints and error cards, here are some useful links
When a spell or an ability appears on the stack you can right-click it to decide if you want to always accept (Always Yes) or always decline it (Always No)
The autotapping, knowing what mana you have available, knowing if there are any basics or deserts left in your deck, these are all things that matter in this deck but are a pain on mobile
Most collectors draw the line at the 360-card base master (207 unique + 153 reverse holos) - adding every promo variant turns the project into a multi-year obsession with an unclear endpoint
The accessories have artwork on them featuring characters like Cloud, Yuna, Vivi, Tifa and more
You may not choose one of the Spider permanents to keep and you may not put any of the Spiders into your graveyard this way