Best AI to Help Build MTG Decks: Five Builders Compared
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Finding the best ai to help build mtg decks is harder than it should be. Five dedicated builders rank for the job, and not one guide compares them. This article does, using each tool’s own pages.
Every tool below is Commander-first, and every one checks its picks against the Scryfall card database. Prices and free limits are printed exactly as the tools state them. Where a page states no price, this guide says so.
AI Holic compares gaming tools like these across our AI for Design & Gaming section.
Why Not Just Ask a General Chatbot?
The tools themselves give the answer. MTG Agents positions its service against general chatbots directly, saying they invent card names and get rules wrong. Magic: The Gathering has tens of thousands of real cards, and a plausible-sounding fake is useless at the table.
So each builder here grounds itself in Scryfall, the community card database. KrakenTheMeta says it checks every card against Scryfall before showing a list. Farseek says it searches Scryfall live before every recommendation, with each card’s rules text in context.
That grounding is the entry ticket, not the difference. The real differences are formats covered, how you work with the tool, and what the free tier allows. The table below lines them up.
The Five Builders at a Glance
| Tool | Standout feature | Free tier | Paid |
|---|---|---|---|
| KrakenTheMeta | Metagame builds plus an Arena coaching overlay | 1 AI deck per week | Pro $4.99/month |
| MTG Agents | Rules assistant that cites rule numbers | Free within fair use | Membership, price not stated |
| MTGBrew | Budget set as a hard cap, strength dial 1 to 10 | 1 welcome credit | Pro $9.99/month |
| Farseek | Chat refinement with a live bracket score | Search and calculators unmetered | Plans from $6.99/month |
| ManaTap | Deck evaluation and upgrade suggestions | Guest and free account tiers | Pro, price not on homepage |
KrakenTheMeta: Widest Format Coverage
You describe the deck you want, and the site says its AI searches the live metagame, builds all 60 or 100 cards, and validates the list. It states that it enforces legality, the singleton rule, and colour identity. You can also build from your own collection, imported through a Moxfield CSV or a plain text list.
Its format list is the widest here: Commander, Standard, Modern, Pioneer, Pauper, Legacy, Vintage, and Historic. A separate desktop app, the Kraken Assistant, overlays MTG Arena with deck tracking, draw odds, and coaching modes. The app is Windows only for now, and three coach matches are free.
Pricing is stated plainly. A free account gets one AI deck generation per week, while the analyzer, card search, and odds calculator stay free. Kraken Pro costs $4.99 per month for unlimited generation and every coaching mode.
MTG Agents: The Rules Lawyer
MTG Agents runs two specialists: a deck builder and a rules assistant. The rules side draws on the Comprehensive Rules, RulesGuru, and Stack Exchange alongside Scryfall. Its answers cite rule numbers and sources, which is the habit that makes rulings checkable.
The builder works from scratch or analyses a deck you upload, suggesting synergies and cuts against real player data and your budget. Formats run from Commander, where it goes deepest, to Modern, Standard, Pioneer, Legacy, and Vintage. Use is free within a fair-use allowance, and an optional membership exists for heavier chat use, with no price stated on the page.
MTGBrew: Budget as a Hard Cap
MTGBrew’s flow has three steps: describe the deck, set a budget and a strength level from 1 to 10, then let it brew. The site says the budget is treated as a hard cap the finished deck never exceeds. Strength is calibrated against that budget, which is the honest way to frame power.
Generation runs on credits: one per deck, two for strength levels 9 and 10. New accounts start with one welcome credit, and packs run from 10 credits for $5.70 to 100 for $48.
Pro costs $9.99 per month and Ultimate $19.99. One caution: the page itself marks several features, including the full card database in its app, as still launching.
Farseek: Commander Depth and Bracket Scoring
Farseek does one format only: Commander. Its chat holds your actual 99-card list and game plan in context, so you can ask why the curve breaks and refine the deck in conversation. It imports from Moxfield or Archidekt links, or builds from a commander, bracket, theme, and budget you choose.
Its analysis benchmarks ramp, draw, interaction, and recursion against Commander targets. A live bracket score checks the deck against the official bracket criteria, and the standalone bracket calculator is free without an account. Card search accepts plain English and writes the Scryfall query for you.
The site says its chat runs on a model it names as Claude Opus 5.5, searching Scryfall live before recommending. Deck storage, search, the commander finder, and the calculator are free and unmetered. AI chat runs on a free weekly allowance, paid plans start at $6.99 per month, and one-off mana potions start at $1.99.
ManaTap: Built for Evaluating Your Deck
ManaTap leads with evaluation rather than generation. You import or paste a deck, and it checks legality and colour identity, analyses ramp, draw, and interaction, then suggests upgrades that fit what the deck is doing. Its toolset adds weak-spot checks, budget swaps, and opening-hand simulation.
Commander is the flagship format, with core tools also covering Standard, Modern, Pioneer, and Pauper. Collection-aware suggestions are opt-in for signed-in users. Guests can try the core tools with limits, and a Pro tier adds higher AI limits and deeper analysis, though the homepage states no dollar price.
Which One Fits You?
Play several formats, or want Arena coaching? KrakenTheMeta covers the most ground for $4.99 a month. Live and die by rulings? MTG Agents is the one that cites its sources.
Brewing on a strict budget is MTGBrew’s whole design, credits and all.
Commander players who tune one deck over months get the most from Farseek’s bracket scoring and chat refinement. Players who already own a deck and want it graded should start with ManaTap. For game-adjacent AI in a different lane, our behavior AI moderation guide covers the tools that police voice chat.
Frequently Asked Questions
Can these tools build legal decks?
That is their core claim. KrakenTheMeta states it enforces legality, singleton, and colour identity, and ManaTap checks legality on import. Every tool validates cards against Scryfall, which is what stops invented cards from reaching your list.
Which builder is truly free?
None is unlimited for free. KrakenTheMeta allows one generated deck per week, MTGBrew starts you with a single credit, and Farseek meters its AI chat weekly. Farseek’s search, commander finder, and bracket calculator are the exception: free and unmetered, per its page.
Which is best for Commander specifically?
Farseek, if Commander is all you play, because it does nothing else and scores your bracket live. KrakenTheMeta is the better pick when Commander is one of several formats. All five tools lead with Commander, which tells you where the demand sits.
Do any of them use cards I already own?
Yes. KrakenTheMeta imports a Moxfield CSV or text list, Farseek imports from Moxfield, Archidekt, and ManaBox, and ManaTap offers collection-aware suggestions for signed-in users. Collection-first building is the feature that saves the most money.
Conclusion
The best ai to help build mtg decks depends on your format and your wallet. Farseek wins for pure Commander, KrakenTheMeta for range, and MTGBrew when the budget is a hard line. Start free, and check every list before you buy a single card.
