Build with the catalog and your collection in view.

Deck building brings eligible card information into a focused workspace for assembling and reviewing a deck while keeping collection ownership visible. Choose a format and a goal, then generate a deck from your collection or from the eligible catalog. The page can prefer cards you own. This is a deck builder inside the collection app. It does not certify official tournament legality, and it does not optimize or invent a deck on its own beyond the recommendation you generate from those choices.