Guide
How it works
The deckbuilder turns your card collection into format-legal deck candidates in four steps. No buying required: nonbasic cards come from your collection, and the builder adds the basic lands needed to complete the mana base.
Upload your collection
Drop in a CSV export from ManaBox — the same file the app produces from "Export collection." Quantities, set codes, conditions, languages, foils, and purchase prices are all read directly. Other tracker formats aren't supported yet, though more may be added over time.
Set your preferences
Pick a format (pauper, commander, legacy, brawl, jumpstart, paupercommander, tinyLeaders). Then optionally narrow the build: preferred play style, colors, archetypes, a locked commander or required card, price range, condition filter. Skip the advanced section if you just want the highest-scoring decks the collection supports.
Watch the build
A beam-search builder assembles candidate decks in parallel under hard format and inventory constraints. Learned rankers running on the builder's own server help order card choices, and supported formats use a small neural scorer to compare completed candidates. No LLM or text-generation service is involved. You see live progress: which archetypes survive each search round and how many rounds have been considered so far. Builds usually finish within a few minutes; collection size and the format's constraints decide how long.
Pick a deck
Each result lists the full decklist, a quality grade, the total price (summed from your own purchase prices), and the archetype it landed on. Copy the decklist to your clipboard or download it as a plain-text file — the standard "quantity card-name" format imports cleanly into Moxfield, Archidekt, and most other deck managers. Or just sleeve it up.