AI Commander Deck Builder
Pick a commander, lock your colors, and let Karn build all 100 cards
MTG Agents is a free AI Commander deck builder. Name your commander - or a strategy, color identity, or budget - and Karn assembles a complete 100-card singleton EDH decklist: a tuned mana base, ramp, card draw, removal, and synergy pieces that match your commander's color identity and target power level. Every card is a real, Commander-legal Magic card pulled from Scryfall, never a hallucinated one.
What Karn Builds for Commander
Everything a 100-card EDH deck needs, tuned to your commander
Full 100-Card Singleton Deck
Karn builds the complete list in one pass - 1 commander plus 99 unique cards, no duplicate non-basics - so you go from an idea to a playable deck without assembling 99 singles by hand.
Color-Identity Legality
He reads your commander's color identity and only suggests cards that fit it, so nothing in the 99 lands off-color or breaks the rule that defines your deck.
Power Level & Bracket
Tell Karn casual, focused, optimized, or cEDH - roughly Brackets 1 through 5 - and the whole deck scales. Tutors, fast mana, and combos come in or out to match the table you play at.
EDHRec-Style Synergy
Karn surfaces the cards that actually pair with your commander's strategy, not a generic goodstuff pile, finding the synergies that make a deck feel coherent.
Commander-Tuned Mana Base
He sizes your land count and fixing for a multiplayer, 40-life game, using the Commander land formula and your exact color spread so the deck casts on curve.
Real Commander-Legal Cards
Every suggestion is one of 40,000+ real cards from Scryfall, filtered against the Commander ban list, so nothing illegal or invented sneaks into your 99.
How to Build a Commander Deck with AI
From a commander to a finished EDH list in four steps
Name Your Commander
Give Karn a legendary creature - or two for a partner or background pairing - and he locks the color identity that governs the entire build.
Set Your Power Level
Say casual, focused, optimized, or cEDH, and add a budget if you have one. Karn uses this to decide how much fast mana, tutoring, and combo the deck should run.
Karn Builds 99 Cards
He fills out ramp, card draw, removal, synergy, and a tuned mana base around your commander, keeping the whole list singleton and inside your color identity.
Refine the List
Ask to swap in budget lands, cut a combo, raise the curve, add more interaction, or lean harder into a theme - Karn rebuilds the deck right in the chat and tells you what changed.
Why Use an AI Commander Deck Builder
Built for the format's real headaches - deck size, color identity, and endless browsing
Skip the 99-Card Grind
Finding 99 unique singleton cards by hand takes hours of tab-juggling. Karn drafts the whole list in minutes so you jump straight to the fun part - refining it.
Always Color-Legal & Singleton
No accidental off-color cards, no duplicate non-basics. Karn keeps the deck inside Commander's rules so you are not hunting for a stray illegal include before game night.
Built to Your Table
Tune the deck to your pod's power level instead of copying a generic top-100 list, so the deck actually fits the people you play with.
A Brewing Partner, Not a Static List
Refine through conversation the way a popularity site can't. Ask Karn to "make it more aristocrats" or "lower the curve" and he reshapes the 99 around your idea.
Build Any Commander Strategy
Name an archetype or just your commander - Karn finds the synergy package
Voltron
Suit up a single commander with auras and equipment and win through commander damage, with the protection to keep your threat on the board.
Tribal / Typal
Elves, Dragons, Slivers, Zombies - Karn finds the lords, payoffs, and enablers that turn a creature type into a deck.
Aristocrats
Sacrifice synergies, death triggers, and drain engines that grind value and close games without combat.
Spellslinger
Instants and sorceries with magecraft and storm payoffs, plus the card draw to keep the spells flowing.
Tokens & Go-Wide
Token generators backed by anthems and overrun finishers to flood the board and swing for the win.
Combo & cEDH
Compact win combos and the tutors to assemble them, tuned for high-power pods that play fast and interact hard.
Frequently Asked Questions
What is an AI Commander deck builder?
It is a tool that generates a complete 100-card singleton Commander (EDH) deck from a commander or strategy you describe. Karn, the MTG Agents deck-building AI, picks the 99 cards, builds the mana base, and keeps everything inside your commander's color identity and the Commander ban list.
Can the AI build a full 100-card Commander deck?
Yes. Tell Karn your commander and he builds all 99 supporting cards plus the mana base in one pass - ramp, card draw, removal, synergy, and lands - as a singleton, Commander-legal list you can save and refine in the chat.
Does the AI respect color identity and the singleton rule?
Yes. Karn reads your commander's color identity and only suggests cards that fit it, and keeps the deck singleton with no duplicates except basic lands. It also filters out cards on the Commander ban list so the list stays legal.
Can I set a power level or bracket for my Commander deck?
Yes. Tell Karn whether you want casual, focused, optimized, or cEDH - roughly Brackets 1 through 5 - and the whole build scales, adding or removing fast mana, tutors, and combos to match the power level your pod plays at.
How is this different from EDHRec?
EDHRec shows you which cards are statistically popular for a commander. Karn actively assembles and rebuilds a full deck through conversation, tuned to your power level, budget, and the specific synergies of your card choices - a brewing partner rather than a static popularity list.
Can Karn build budget Commander decks?
Yes. Give Karn a total budget or a per-card price cap and he chooses affordable lands and staples, swapping in budget alternatives. You can also paste an existing deck and ask him to bring its price down without losing the strategy.
Which Commander strategies can the AI build?
Karn handles all the major EDH archetypes - voltron, tribal, aristocrats, spellslinger, tokens, control, ramp, and combo/cEDH. Name an archetype or just your commander, and he builds the synergy package around it.
Is the AI Commander deck builder free?
Yes, MTG Agents is free to use with no credit card required. Create an account to save your Commander decks, track changes over time, and come back to refine them with Karn later.
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