MTG Deck Builder - AI Chat for Commander and Other MTG Decks
Welcome to MagicTG Deck Builder! Let's create your perfect deck.
Describe the deck you want, Commander or not, and talk through card choices, colors and upgrades.
I'm looking to build a Commander deck with...
Can you help me create a non-Commander deck featuring...
What are some good leaders for a blue and white deck in Commander mode?
How can I improve my current deck with more card draw?
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About MTG Deck Builder
MTG Deck Builder is a deck-building GPT for Magic: The Gathering, published in the GPT Store by an independent creator and available here through YesChat. It greets you with "Welcome to MagicTG Deck Builder! Let's create your perfect deck." and covers both Commander and non-Commander decks. You can start from a commander, a color pair, a creature type or a single card you want to build around, and ask why each card is in the list. Players also use it to talk through mana curve, removal and card draw in a deck they already own. Its tags mention tournament prep and card analysis, but it works from what its AI model learned, and a live card database is not promised here, so it can describe a card wrongly, miss recent releases or suggest something that is not legal in your format. Treat the list as a draft and confirm each card in a card database. Powered by ChatGPT-4o。
Deck Building with MTG Deck Builder
Build a Deck from a Theme or Commander
Example"I'm looking to build a Commander deck with a graveyard theme in black and green. Suggest a commander and a core of 30 cards."
ScenarioA starting point you can fill out with cards you own, then check in a card database.
Explain Card Interactions
Example"Here is the text of two cards in my deck. How do they work together, and what can go wrong?"
ScenarioPasting the card text keeps it from mixing up cards; for rulings at an event, ask a judge.
Improve an Existing Deck
Example"How can I improve my current deck with more card draw? Here is my list."
ScenarioAsk for swaps that keep your budget and theme, and try the changes in a few games before you commit.
Target User Groups for MTG Deck Builder
Commander Players
Brainstorm a new deck around a commander or theme and get a first list to refine.
Players Preparing for Events
Talk through matchups and swaps, and confirm legality and the banned list from official sources before you register.
New Players
Ask what a card does, why a deck needs removal and card draw, and how to start a first deck.
Using MTG Deck Builder: A Step-by-Step Guide
1
Open MTG Deck Builder on this page. You can try it for free: each device gets 5 free messages in 24 hours, shared across all GPT pages, whether or not you have an account. After that, members continue in YesChat's chat, and others can upgrade to a plan.
2
Say which kind of deck you want: a Commander deck built around a certain commander or theme, or a non-Commander deck featuring a card or strategy you like.
3
Give your colors, budget and how you play, at a casual table or in tournaments, and ask for a full list or a starting core of cards.
4
To improve a deck you already have, paste the list as text, or attach a screenshot (up to 4 images) or a text file, and ask what to change, for example how to add more card draw.
5
Before you play, check each card's legality and the current banned list on the official Magic site and in a card database, and look up prices at a card shop, since the model may not know the newest sets.
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Frequently Asked Questions about MTG Deck Builder
Does it build Commander decks?
Yes. Commander and non-Commander decks are both in its description, and one suggested prompt asks for good leaders for a blue and white Commander deck. Ask for a full list or for a core you fill in yourself.
Can it check whether my deck is legal?
It can point out cards it believes are banned or outside your colors, but a live link to the rules or the banned lists is not promised here. Confirm legality on the official Magic: The Gathering site and in a card database before a game or event.
Does it know the newest sets and card prices?
It may not. It answers from its AI model's training data and live web search is not promised here, so recent sets, rules changes and prices can be missing. Look up new cards and prices yourself.
Can it play test games or save my deck?
No. It does not play out games, and it has no deck storage or export; copy the list into your own deck tool or notes.
Is this an official Magic: The Gathering tool?
No. MTG Deck Builder is a third-party GPT from the GPT Store. It is made by neither Wizards of the Coast, YesChat nor OpenAI, and it is not linked to other deck-building sites or apps.