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Two tools sit on the forge page. One is free and does exactly what you tell it. The other reads a sentence and builds from that. This is what each of them does, in plain words, and what it costs.
Free for everyone, with no monthly limit. You make every decision; the forge does the counting.
Step 1 of 8
The one card the rest of the deck is built around. Nothing else opens until you pick it.
Search by name, or by what a card does — the search reads rules text too, so “creatures return from the graveyard” finds commanders you could not name. The five color buttons narrow the list: Includes keeps commanders whose colors fit inside the ones you chose, Exactly keeps only those matching them precisely.
Surprise me picks one at random from the commanders that still match your filters, so it stays inside whatever you have already narrowed. It only selects — you still confirm.
Some commanders bring a second one. If yours can have a partner, or needs a Background, the forge asks for it before moving on.
Press Use commander to lock it in. Your commander decides the deck’s colors, and every card the forge considers after this has to fit inside them.
The forge does not fill a list of a hundred cards. It fills jobs. Every Commander deck needs mana, cards to draw, ways to remove a problem, a couple of answers to a whole board, and lands — so slots are reserved for each of those first and filled in that order, and nothing is allowed to crowd a job out.
A balanced hundred-card deck aims at roughly 37 lands, 10 cards that ramp your mana, 10 that draw you more, 8 pieces of removal, 3 board wipes and about 25 creatures. Choosing a different deck shape moves those numbers.
At least 3 of those answers have to work at instant speed — the forge aims for 5. If a draft comes up short it trades its weakest cards for instant-speed answers, and it will not make that trade if doing so would break another job’s minimum or push you over budget.
The lands are built last and built to fit: the forge counts what colors the cards it actually chose demand, then weights the mana base toward them. A single-color deck keeps at least 60% basic lands and a multicolor one at least 25%, so the deck stays playable rather than turning into a pile of expensive lands.
Every card is ranked on how well it matches your themes, how it works with your commander, how often the wider Commander community plays it alongside cards like yours, how badly the deck still needs that particular job, and how it fits your budget. No AI is involved anywhere in this — the same choices give you the same deck.
The draft opens with your commander, the card count and the total price, then a short list of notices, then the deck grouped by card type.
A notice reads like this: “This deck could use 2 more removal spells — Deck Forge could not find enough that fit your themes and budget.”
That is not an error and the deck is still complete and legal. It means the forge ran out of cards that satisfied everything at once — your commander’s colors, your themes, your budget, and what actually exists. The sentence names the constraint that ran out, so you know which one to loosen. Widen a theme, raise the budget, or take the deck as it is.
Other notices work the same way: how many cards were removed to stay under budget, how many the deck is short, or that a theme had too few cards to build a real package around, so the rest came from your commander’s colors.
Every card has a Replace button that swaps it for the next best one. Pinned cards and basic lands do not have one — a pin is a promise, and one basic land is the same as another. Replacements happen one at a time and swapped rows stay marked, so you can see what you changed.
Save and open in editor writes the deck to your account and drops you straight into the deck editor, where the charts, the price tracking and the rest of the deck tools work on it like any other deck.
For supporters. You describe the deck you want in a sentence; the Forge Master reads it, builds from it, and tells you what it did.
Write what you want the deck to do, the way you would say it to somebody across a table. Name a commander if you have one in mind, name a price if you have a limit, and leave out anything you do not care about — the forge fills in the rest.
Enter starts a new line and Cmd or Ctrl with Enter sends. Every message forges a whole new deck from scratch; refining a deck by talking to it is not built yet.
Try a sentence
No commander named, no budget. The forge fills in everything you left out.
Everything below works, and nothing below spends a build — this is a demonstration.
A demonstration. Every control above works, and none of them starts a build or uses one of your builds.
You can leave up to 3 readings waiting at once, and a reading goes cold after 30 minutes — send the sentence again and you get a fresh one.
The forge names each stage as it reaches it. Drag the slider to step through the stages, and each one says what it is doing as you reach it.
Stage 8 of 8: Sharpening your deck — the finished build.
What this stage does
The note that comes with the deck is written. Nothing about the deck can change here — if this stage fails you lose the prose and keep the cards.
Once the free builder has produced a draft, the curator reads it. It is given the rules text of every card in the deck and told plainly that the rules text is the evidence — our own labels are hints, they are sometimes wrong, and where a label and the rules text disagree it has to believe the rules text.
Before it changes anything it has to say what the deck’s plan is: how this deck wins and which cards do that work. Only then may it propose swaps, and each one has to cite what the incoming card’s rules text actually does. Naming a card because it is popular, expensive or famous is not allowed.
It can change up to 40 cards, chosen from as many as 400 alternatives. It can never take out a card you pinned, your commander, or a land. It may never end up with fewer cards matching a theme you asked for than it started with.
Every note the Forge Master writes carries this line: “Written by AI. It can be wrong — the card choices come from our deck builder, but check the reasoning.”
That label is exact rather than decorative. It sits on the prose an AI wrote and on nothing else. The Forge Master’s own greetings and sign-offs are ours, written by hand, and they are deliberately kept outside it.
Sometimes a deck arrives saying “Part of this build fell back to our standard build, so the card choices are the same ones the form below would make.” That means one of the stages did not come back with something usable, so the free builder’s answer stands there instead. The deck is still complete, still legal, and still counts against your monthly builds — it is a note about how it was made, not a failure.
The note is held back until the deck exists, so you will never read a description of a deck that did not arrive. And the narrator is required to admit it when part of what you asked for went unanswered, rather than writing around it.
One honest warning: the first stage chooses themes out of a very large vocabulary, and the same sentence sent twice does not always land on the same set. That is what the reading is for — you see the interpretation before you spend anything, and Not quite costs nothing.
Forging it yourself is free and always will be. The Forge Master calls out to an AI model, which costs us real money, so it comes with a monthly allowance.
No limit, no allowance, no counting. Forge as many decks as you like. Forging a great many within a minute will ask you to wait a moment, and that is the only brake on it.
A normal 100-card deck uses one Forge Master build. Larger Rulebreaker decks can use more than one from the monthly allowance.
Spends one build
Spends nothing
When a build is given back to you, the deck it was attached to says so: “This build did not use one of your builds.” The count under the box is read fresh from your account rather than guessed, so what it shows is what you have.
On the first of every calendar month, at midnight UTC. It is not a rolling thirty days and it does not track the day you signed up. Unused builds do not carry over.