Desktop application
Zementor – TCG Deck Builder
Zementor lets you build decks for Magic: The Gathering in minutes. From a short description, an AI assistant puts together a whole deck or improves an existing one, using your own OpenAI API key. Mana curve, color distribution and sample hands show you right away whether the deck holds together. To try it out, print it as playtest cards or export it to Tabletop Simulator.
Video
Features
The advanced search for blue instants that draw cards, with a card preview. Asked to improve the mana base, the AI assistant reworked the lands of a Jund deck; the "Diff" column shows every change. An opening hand from a Boros deck, next to its mana curve, color needs and mana sources. A stack being dragged into the sideboard, the part it lands in highlighted. The print preview with playtest cards, the tokens to print on the right.
All versions
| Version | Date | Size | SHA-256 | Download |
|---|---|---|---|---|
| v1.0.1 | 1 Nov 2026 | 102.7 MB | 640028f9df081c33324bdc8c7bd384d83c67671f31fd31233a8120d24c6d8fa7 | Installer |
Installation: Download and run the installer. The app fetches card data from Scryfall as needed and caches it on your computer. On first start it asks once whether to download all card data in one go; then it also works offline. For the AI assistant you need your own OpenAI API key. Because the installer is not signed, Windows may show “Windows protected your PC” on first start. Click “More info” and then “Run anyway”.
Zementor is unofficial Fan Content permitted under the Fan Content Policy. Not approved/endorsed by Wizards. Portions of the materials used are property of Wizards of the Coast. © Wizards of the Coast LLC. Card data and images are provided by Scryfall.