Last updated 2026-10-20
This page provides direct answers to the questions players actually ask before and after using the builder: pricing, format support, data sources, and how much to trust a suggestion in a competitive pod. Each answer is short on purpose and links to the methodology or about page when the topic goes deeper.
Yes. Every deck tool — the builder, optimizer, Deck Doctor, and collection — stays free and uncapped, with no account required. A free account is needed to save decks, see match history, sync your collection across browsers, use the AI deck consultant, or run Best deck, but none of that costs anything either; paid plans only raise your monthly allowance of AI deck consults on Claude and your daily allowance of best-deck runs, and past the consult allowance the consultant still answers, using a standard OpenAI model instead. The site also runs on donations today, and will carry limited, non-intrusive ads later.
Nothing is unlocked that was locked — every deck tool stays free either way. Paid plans raise two allowances: the AI deck consultant (Free 5 Claude consults a month, Pro ($4.99/month) 50, Commander ($14.99/month) 150 — resets on the 4th of every calendar month for every plan, independent of when you subscribed) and Best deck (Free 3 runs a day, Pro 15, Commander 50 — resets at UTC midnight). Past your consult allowance it still answers, just on a standard OpenAI model instead of Claude. Payments run through Stripe as a monthly subscription, cancel any time from the billing portal.
Given a pasted or saved collection (and optionally a commander), it screens your top 24 owned commanders, climbs the strongest one for up to 3 passes against a buy budget, and hands you the full decklist — same Deck Score, consultant, workspace and export as the builder. It's signed-in only: Free gets 3 runs a day, Pro 15, Commander 50; every other deck tool stays free and uncapped either way. See the methodology page for the objective and its limits.
Yes. The builder supports Brawl (Arena Historic Brawl) and Standard Brawl alongside paper Commander (EDH). A Brawl build uses the same 100-card pool as Arena's Competitive Brawl queue (launched 2026-06-23); check the queue's banned-commander list before queueing.
Wizards of the Coast's Commander Bracket system (1 through 5) rates a deck's power level based on Game Changers, mass land denial, chained extra turns, and two-card infinite combos. The builder has a separate power-level dial (casual, optimized, cEDH) and a bracket dropdown (1–5, or Any); the bracket isn't inferred from power level. Set a bracket and the engine swaps cards toward it and reports target → result when it can't fully get there. Leave it on Any and no bracket is targeted — the finished list is still classified and shown.
A full build evaluates the entire eligible card pool against the deck corpus each time, rather than serving a cached list. That takes 30 to 90 seconds, since the recommendation model, the synergy graph, and the bracket classifier all run in the same pass.
By default, only in your browser's localStorage. When you build from it, the list of owned card names is sent with that one request so the engine can restrict the pool. If you sign in, your collection is also saved to your account so it follows you between browsers.
4,678,606 public decklists scraped from Moxfield, Archidekt, EDHREC, as of 2026-10-20. Moxfield lists train the model but are excluded from the public catalogue pending written permission — see the methodology page for the full breakdown.
Treat them as a starting point, not a competitive tuning tool. The corpus has no win-rate data, only likes and views, so it reflects what players build and share rather than what actually wins the most games at a cEDH table.
The underlying lift-based synergy math is similar, but this builder also runs a live collaborative-filtering model, a commander oracle-text synergy graph, and a WotC bracket classifier together in one pass. Every suggestion explains its reasoning per card rather than showing a bare popularity rank.
Yes. Builds export in Arena deck-import format for pasting straight into the client, and as plain decklist text compatible with Moxfield's importer. Both exports include the commander and any companion or partner correctly labeled.
Eventually, yes — limited and non-intrusive, to keep the site free without relying on donations alone. No ad slots exist yet, and none will run on the builder's results screen in a way that blocks reading a decklist.
Use the feedback button on any page, or the contact form. Reports go straight to the developer, and wrong card names or missing staples are the fastest kind of report to act on.
Yes. Paste the list into the Optimizer (Arena, Moxfield, Archidekt or MTGO text all work), pick the format, and you get ranked cuts and adds with a stated reason for each, a Karsten land count, a colour-source check and any legality problems. It covers Commander, Brawl, Competitive Brawl, Standard Brawl and the 60-card formats (Standard, Historic, Explorer, Alchemy, Pioneer, Modern, Legacy, Pauper). Untick any swap you disagree with, then copy the list back into Arena.
Karolis Paulikas, a solo developer based in Lithuania, built and maintains the site and its recommendation engine alone. See About for the full story.