MTG AI Deck Analyzer
Optimize the deck you already have with Karn, your AI deck analyzer
Already built a deck and want it to hit harder? Paste or upload your decklist and Karn - our AI deck optimizer - reads every card against 40,000+ real cards from Scryfall. Get specific cuts, high-impact adds, mana curve fixes, missing-staple alerts, synergy gaps, and a clear upgrade path. Works for Commander/EDH, Standard, Modern, Pioneer, and every format. Free, no sign-up needed to start.
What the Deck Analyzer Checks
A full diagnosis of your list, card by card, backed by real Scryfall data
Cards to Cut
Karn flags the weak links - underperformers, win-more cards, do-nothing pet cards, and anything pulling against your strategy. Every cut comes with a reason, so you decide with context instead of guesswork.
High-Impact Adds
Get specific upgrades that raise your deck's consistency and ceiling, ranked by how much they actually move the needle - not by how popular they are on a top-100 list.
Mana Curve & Ramp
Karn spots a top-heavy curve, too few early plays, or thin ramp, then suggests fixes measured against healthy ratios for your format and strategy.
Synergy & Combo Gaps
He searches across 40,000+ cards for interactions your list is missing and points out where your deck lacks a coherent game plan or a payoff for the pieces you already run.
Missing Staples
Karn checks your list against the removal, card-draw, and ramp packages an archetype expects, so you stop leaving format staples and obvious includes on the bench.
Power-Level Tuning
He reads the deck's bracket and helps you push it up toward cEDH or dial it down for a casual table - swapping fast mana, tutors, and combos in or out to match the pod you play in.
How the Deck Analyzer Works
From a finished list to a clear upgrade plan in minutes
Paste or Upload Your Decklist
Drop in any list - plain text, a commander plus a pile of cards, or an export copied from a deck site. Quantities like "2x Counterspell" are understood, and Karn matches every line to a real card with accurate Scryfall data.
Karn Analyzes It
Karn grades the whole deck: weak cards, curve and ramp balance, mana base, missing staples, synergy gaps, and overall power level. Each note comes with the reasoning behind it, so the analysis teaches you as it goes.
Apply the Upgrades
Chat back and forth to lock in cuts and adds, ask for budget swaps, or push the power level. "Cut the weakest five," "lower my curve," "make it Bracket 3" - Karn re-optimizes the list in real time and explains each change.
Why Use an AI Deck Optimizer
A focused second opinion on the exact 99 you already play
Specific to Your List
Every cut and add is judged against the exact cards in your deck - not an averaged "most-played" list that ignores how your build actually works. The advice fits your deck, not a statistical stranger's.
Catches What You Miss
After weeks of staring at the same 99, you stop seeing the dead cards and curve problems. Karn is an objective set of eyes that surfaces the weak spots you've gone blind to.
Clear Upgrade Path
Instead of a vague "get better cards," you get a prioritized list ranked by impact, so you spend your budget where it actually changes games.
Iterate by Conversation
Refine the analysis the way you can't with a static checker. Change a constraint, ask for cheaper options, or chase a different win condition and Karn re-grades the list on the spot.
Optimizing a Commander / EDH Deck
Karn measures your 100-card list against the ratios a healthy Commander deck wants
Quick Deck Formula (100 cards)
• 1 Commander
• 36-38 Lands
• 10-12 Ramp
• 8-10 Card Draw
• 8-10 Removal
• 7-10 Win Conditions
• 15-20 Synergy/Theme Cards
• 3-5 Flex Slots
A Worked Example
Paste a 38-land Gruul deck with 6 ramp, 5 draw, and a 4.1 average mana value and Karn's read is concrete: the curve is too high and the deck will stall.
He suggests: trim to 36 lands, add 4-5 ramp pieces (Sol Ring, Rampant Growth, a signet), add 3-4 repeatable draw sources, and cut the three highest-cost cards that don't close the game. Result: a smoother deck that casts its commander on time.
Legality & Color Identity
Karn reads your commander's color identity and flags anything off-color or on the Commander ban list, then checks your ramp, card-draw, and interaction counts against healthy EDH targets and recommends adds wherever a package is running thin.
Frequently Asked Questions
Is the MTG deck analyzer free?
Yes. You can paste your decklist and get a full analysis from Karn for free, with no credit card required. Create an account if you want to save the optimized deck and track your changes over time.
How do I analyze my deck with the AI?
Open the chat, paste or upload your decklist, and ask Karn to analyze it. He reads every card against real Scryfall data and returns specific cuts, adds, curve fixes, and synergy notes - each with a reason.
Can it optimize a Commander / EDH deck?
Yes - Commander is the most common use. Karn checks your 100-card list for color-identity legality, mana base, ramp, draw and removal balance, missing staples, and synergy gaps, then suggests prioritized upgrades.
What is the difference between the deck analyzer and the deck builder?
The deck builder creates a brand-new decklist from a commander or strategy you describe. The analyzer takes a deck you already have and optimizes it. Use the AI Deck Builder to start from scratch, the analyzer to improve what you play.
Will the analyzer tell me which cards to cut?
Yes. Karn flags underperformers, win-more cards, and anything that does not fit your strategy, and explains why each one is a candidate to cut so you can make the final call with context.
Can it help raise or lower my deck's power level?
Yes. Tell Karn the bracket or table you are aiming for and he will tune the list up toward cEDH or down for casual play, swapping cards to match the power level you want.
What decklist formats can I paste in?
Plain text lists, a commander plus a card list, and common exports from deck-building sites all work. Karn matches each line to a real card and analyzes the full deck.
Does it suggest budget upgrades?
Yes. Set a total or per-card budget and Karn recommends the highest-impact affordable upgrades, or swaps expensive cards in your existing list for cheaper alternatives that keep the deck's plan intact.
Explore More
AI Deck Builder
Starting from zero instead? Tell Karn what you want and get a complete decklist in minutes.
Commander Deck Ratios & Guide
Learn the ratios Karn optimizes against - lands, ramp, draw, removal, and win conditions.
MTG Rules FAQ
Settle the card-interaction questions that come up while you tune your list.
Last updated: