MTG AI Assistant
Three Magic: The Gathering experts in one chat - Karn builds decks, Nissa answers rules with sources, Jace knows the lore
MTG Agents is a free AI assistant for Magic: The Gathering. Instead of one generic chatbot, you get a team of specialists: Karn builds and tunes decks from 40,000+ real cards, Nissa resolves rules questions with citations from the Comprehensive Rules, RulesGuru, and Stack Exchange, and Jace handles lore and casual Magic talk. Ask anything - the right expert answers automatically.
What Your MTG AI Assistant Can Do
One surface that covers deck building, rules, and lore - not a single-purpose bot
Build a Deck
Describe a commander, strategy, or color pair and Karn returns a complete, optimized decklist with a tuned mana base and synergies, drawn from real card data.
Analyze Your Decklist
Paste or upload a list and get cuts, additions, and synergy fixes. The assistant can also read and edit decks you've saved to your account.
Answer Rules Questions
Nissa explains card interactions and the stack with exact rule numbers and verifiable sources, so you learn the why behind every ruling.
Explain Lore & Story
Jace covers planeswalkers, planes, and set story for the casual questions and flavour that make Magic more than a card game.
Real Card Data
Every card suggestion is a real, format-legal card from Scryfall's 40,000+ cards - never a hallucinated or made-up card.
One Conversation
No mode-switching. Ask a deck question, then a rules question, then a lore question in the same chat and the right expert responds each time.
Meet the Three Agents
Purpose-built specialists, not a single chatbot wearing different hats
Karn - Deck Building Specialist
Your deck-building buddy. Karn searches across 40,000+ real cards, suggests killer synergies, and builds or updates your deck with real player insights. He can see and analyze the decks you upload, build a complete list from scratch, tune your mana base, and fit any budget across every format.
Nissa - Rules Expert
Your go-to for tricky rules questions. Nissa breaks down official rulings and card interactions step by step, and always shares her sources from the Comprehensive Rules, RulesGuru, and Stack Exchange. Ask her anything from combat math to the stack.
Jace - Lore & Smalltalk
The storyteller of the group. Jace handles planeswalker backstories, plane and set lore, and casual Magic conversation when you want flavour instead of a decklist or a ruling.
One Router, No Menus
You never pick an agent by hand. Ask your question in plain English and the assistant routes it to Karn, Nissa, or Jace automatically, so the experience feels like one smart assistant rather than three separate tools.
How It Works
Ask in plain English and the right expert answers
Ask in Plain English
Type any Magic question - a deck idea, a rules edge case, or a lore question. No commands, no menus, no choosing a mode first.
The Right Expert Answers
The assistant routes your question to Karn, Nissa, or Jace automatically. You get the specialist for the job without ever picking one.
Get a Real Answer
Sourced rulings, real card suggestions, or lore - then keep the conversation going to refine. Want the mechanism behind it? See how it works.
Which Agent for Which Task
The Router picks for you, but here's the cheat sheet
Use Karn when...
You want to build a new deck, optimize one you already have, find synergies, or fit a budget.
Example: "Build me a budget Atraxa superfriends deck."
Use Nissa when...
A rules interaction is unclear, you need a ruling with a source, or you have a combat or stack question.
Example: "Does deathtouch work with trample?"
Use Jace when...
You want story, character, or set lore, or just casual Magic chat between games.
Example: "Who is Jace Beleren?"
Not sure?
Just ask. The Router reads your question and hands it to the right expert, so the matrix above is guidance, not a menu you have to navigate.
More Than a Generic AI Chatbot
Purpose-built for Magic, grounded in real data
Real Cards, Never Invented
Grounded in Scryfall, the assistant never suggests a card that does not exist or misquotes a card's rules text - the failure mode that makes general chatbots unreliable for Magic.
Cited, Verifiable Answers
Rules answers link to official sources you can check yourself, instead of confident-sounding guesses you have to take on faith.
It Knows Your Decks
Save a deck and the assistant can read and modify it in chat - context a general-purpose chatbot simply can't hold between questions.
Format-Aware
It understands Commander, Standard, Modern, Pioneer, Pauper, and more, so every suggestion is legal in the format you actually play.
Frequently Asked Questions
Is there an AI assistant for Magic: The Gathering?
Yes. MTG Agents is a free AI assistant for Magic: The Gathering with three specialist agents - Karn for deck building, Nissa for rules, and Jace for lore. You chat with all three in one place and the right expert answers automatically.
What can the MTG AI assistant do?
It builds and analyzes decks from 40,000+ real cards, answers rules questions with citations from the Comprehensive Rules, RulesGuru, and Stack Exchange, and explains Magic lore and story - all in a single conversation.
Is the MTG AI helper free to use?
Yes, it is free. You can start chatting right away with no credit card. Creating a free account lets you save your decks so the assistant can read and refine them across sessions.
Who are Karn, Nissa, and Jace?
They are the three AI agents that make up the assistant. Karn is the deck-building specialist, Nissa is the rules expert who always cites her sources, and Jace handles lore and casual Magic conversation.
Do I have to choose which agent to talk to?
No. You just ask your question in plain English and a Router automatically sends it to Karn, Nissa, or Jace. The "which agent for which task" guide is there to set expectations, not a menu you have to pick from.
How is this different from a general AI chatbot?
It is purpose-built for Magic: it pulls from real Scryfall card data so it never invents cards, cites official rules sources you can verify, knows current format legality, and can read and edit decks you've saved.
Can the assistant help with a deck I already have?
Yes. Paste or upload a decklist, or open a deck you've saved, and Karn will suggest cuts, additions, and synergies. It works for Commander, Standard, Modern, Pioneer, Pauper, and more.
Does the assistant work for Commander / EDH?
Yes. Commander is the most popular way people use it - Karn builds full 100-card singleton decks with optimized mana bases, and Nissa answers the multiplayer and command-zone rules questions that come with the format.
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