Precon checker: which precons do you already half own?
Compare your collection with 55 Commander precons. For each one you see how many cards you already own and what the rest costs in euros. Free, no account.
How it works
- Drop in your collection export (ManaBox, Moxfield, Archidekt or Deckbox) or paste a card list.
- The checker looks in every precon for the cards you already own, by English card name. Basic lands are left out.
- You see the precons sorted by how much you own, with what the missing cards cost together in euros.
- Open a precon in RuneBinder to set it against your collection as a deck. What you miss goes on your wishlist.
How the checker counts
A card counts if you own it in any printing: a Sol Ring from an old set counts for every precon with Sol Ring. Each card name counts once, even if you have more copies. What you miss is priced at the Cardmarket price of the printing in the precon, via Scryfall on 2 November 2026; a cheaper reprint can cost less.
The precons themselves, with their value and decklist, are on Commander precons by value. What your whole collection is worth: the collection value calculator.
Frequently asked questions
- Which precons does the precon checker compare?
- The 55 precons from the 16 newest Commander sets: Foundations Commander, Reality Fracture Commander, Marvel Super Heroes Commander, Secrets of Strixhaven Commander, Teenage Mutant Ninja Turtles Eternal, Lorwyn Eclipsed Commander, Edge of Eternities Commander, Final Fantasy Commander, Tarkir: Dragonstorm Commander, Aetherdrift Commander, Duskmourn: House of Horror Commander, Bloomburrow Commander, Modern Horizons 3 Commander, Fallout, Doctor Who, Warhammer 40,000 Commander. Older precons follow.
- Does a card in another printing or language count?
- Yes. The checker compares by card name, so every printing counts. A name in another language, such as "Blitzschlag" in a pasted list, is looked up on Scryfall as the English card.
- Does my collection export go to a server?
- No. The file is read and compared in your browser. Only names the checker does not recognise right away, such as a name in another language, go to Scryfall. No account needed.
- Why don't basic lands count?
- Almost everyone has them already, and they cost little. With basic lands in, every precon would look fuller than it is.
Add your collection and see what you miss →
Last updated: 2 November 2026