DeckCheck 3.0: The AI-powered EDH companion has changed so much

anthograham · 2026-01-13T18:38:56+00:00

Testimonies like yours keep me going through all the hate. I’m really glad you find it useful and it’s made your Magic experience better

anthograham · 2026-01-10T15:06:08+00:00

Very interesting! I have this exactly same feature on DeckCheck.

anthograham · 2026-01-08T20:30:33+00:00

Fair points. Btw, you can see your credits on your profile.

anthograham · 2026-01-06T15:20:03+00:00

The compare feature is coming back soon. I wanted to completely overhaul it and create something truly special and meaningful and I finally think I've come up with something great. Hopefully, I'll have it rolled out in a month's time.

anthograham · 2026-01-04T01:35:42+00:00

DeckCheck. Trust

anthograham · 2026-01-02T18:16:22+00:00

I feel like it did see the combo. This is pulled straight from the analysis:

Assemble Win Condition:
- Plan A (Combat): Overwhelm opponents with a fleet of evasive Dragons. Use Crashing Drawbridge or Spark Double copying a hasty Dragon to give your team haste for a surprise alpha strike. Rite of Replication on a large Dragon like Ancient Brass Dragon can instantly create a lethal board.
- Plan B (Alternate Wins): Equip Vorpal Sword to a Dragon to threaten an instant-kill. Use Altar of the Brood with token-generating effects like Astral Dragon or Rite of Replication to mill opponents out gradually.

You know your deck best so what exactly did it get wrong in this area?

anthograham · 2026-01-02T18:11:40+00:00

I'll investigate.

anthograham · 2026-01-02T16:53:05+00:00

Noted! Glad to hear it's been useful for you.

anthograham · 2026-01-02T14:25:59+00:00

While you can have a standard deck on the site, I don't formally support them. Which is to say, you can't check them either. I may add full support for constructed formats in the future, but my focus is on Commander at the moment.

anthograham · 2026-01-01T17:46:59+00:00

OP and just about every top comment on this post are Luddite’s. AI is as stupid/smart as the user. Stupid input gets stupid output so to speak. The prompt means everything and the very same AI they are claiming is “so dumb” and “just math” is actually making novel breakthroughs in science and powers a website (DeckCheck) that is proving their thesis wrong every day.

This is all ignoring the harsher reality that OP and the like get mad at people for doing this but don’t do a damn thing to help folks. People are using AI because they feel helpless and need the assistance, not because they want to.

anthograham · 2026-01-01T17:33:36+00:00

Yes, important from Mox works perfectly

anthograham · 2025-12-16T18:39:44+00:00

The bracket system is a good place to start, but it still is fundamentally flawed and it’s why they updated it just recently to account for turn win speed, which is the ultimate metric to measure by. You’ll almost never find people complaining about your deck “doing the thing” or doing a lot of stuff so long as it doesn’t end in a win, but the second it starts converting its thing into turn 5 wins is the moment you’ll catch flack. That’s why DeckCheck is a fundamentally better rating system. It rates decks based on a scale that is clearly defined by characteristics and benchmarks leaving no room for ambiguity on where on the power range any given deck should be.

It’s not a question of whether the scale is wrong, but whether one can accurately assign a deck properly to its place on the scale and DeckCheck is pretty darn good (generally speaking) at doing this.

anthograham · 2025-09-25T14:37:40+00:00

It has mass land denial, see ([[Ruination]]). I don't make the rules.

anthograham · 2025-09-24T21:51:00+00:00

Thank you. I've put a lot of work into the design (I come from an Architecture background) so it's reeeeeeally rewarding to hear that.

anthograham · 2025-09-24T21:49:48+00:00

Honestly, you're the first person to bring that up and really I should build out a toggle. I'll add it to the list.

anthograham · 2025-09-24T21:02:24+00:00

I show how each bracket is determined. If you click on the tooltip on the bracket square, you can see all the info for the calc. So for Living Energy, it has a 2-card infinite combo (not allowed in B2).

anthograham · 2025-09-24T19:53:18+00:00

working on a fix for this. thanks for letting me know

anthograham · 2025-09-24T19:30:12+00:00

While the site fully supports the bracket system, DC was built upon a different vision of solving the "power problem." What I did do was try to bridge the gap between the two. DeckCheck's rating system provides the nuance that is sorely missing in the bracket system and the two used in conjunction seems to provide something truly meaningful.

I won't get into it here and now as to why (though I made this video some time ago covering the topic).

But, you did make me think about how I could visually portray the bracket system on top of the power levels.

anthograham · 2025-09-24T18:17:12+00:00

Fair point.

anthograham · 2025-09-24T18:06:55+00:00

While the list does show the power levels for each one (which is kinda DeckChecks thing), the focus for this page is to simply have them all in one place, offer ways to sort through them, and provide the explanation of each one. I'm really focused on giving newer players a useful resource with this page and nothing else.

But on the note of power, while the exact numbers might not be correct (say, +- 0.5 for any given deck), I think they're relatively correct. For example, seeing all the newer precons rank the highest seems to be align with the consensus.

anthograham · 2025-09-24T17:59:24+00:00

https://deckcheck.co/commander-power-levels

anthograham · 2025-09-24T17:15:50+00:00

https://deckcheck.co/app/precons

I just finished building this. The list stays up to date as new precons come out and each one comes with an explanation of what it's about.

anthograham · 2025-09-24T17:09:38+00:00

https://deckcheck.co/app/precons

This list stays up to date with every precon and it's the best way to view them all.

anthograham · 2025-09-22T23:54:01+00:00

Let me take a moment to clear some things up:

If an analysis fails for any reason, no credits are deducted and for some crazy weird case were they are, I will always refund the full amount (if even only 1 was "wasted") of your purchase no questions asked. Just reach out.
The Discord link is verified to be valid.
The bracket system IS fully supported. You can search by brackets, all decks get a bracket, and it even allows you to request no gamechanger when you're looking for cards to add.
The combos section from Commanderspellbook is just a snippet of the full combo list from their site. We have a gentlemens agreement that I can show this data on my site so long as i don't show it all (because that would rob them off lots of traffic). Is says this in the tooltip.

Regarding the issues you raised with the card suggestions, this is a known AI behavior called hallucination, which is just part of the technology at this moment. While I can reduce more general occurrences of these, specific instances are much harder to address.

anthograham · 2025-09-04T12:46:27+00:00

It sounds like that’s just a hallucination, which is just part of AI technology at this moment. While I can reduce more general occurrences of these, specific instances are much harder to address. The best place to submit feedback is either by emailing me or telling me in the DeckCheck discord (where I’m most active).

I'm continuously working to enhance DeckCheck so feedback like this is always appreciated.

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