A Neural Network Designs Magic: the Gathering Cards, and It's Hilarious

What happens when you feed the text of every Magic card ever made to a deep neural network and ask it to design its own cards? Part genius, part gibberish—and maybe a little poetry. But mostly, it just makes you laugh your ass off.

The neural network project first came to our attention in early June, when a user named Talco at the MTGSalvation forums posted about it:

I’m a PhD candidate researcher in computer science who has been investigating the use of deep neural networks for classification and problem solving tasks. I saw a fun article about training a neural network on arbitrary data to generate novel sequences. For example, you force the network to read Shakespeare over and over and eventually it can write its own texts in the style of Shakespeare. I saw that and thought: hey, why not Magic cards instead of Shakespeare? So I downloaded the source code (here) and a json corpus of Magic cards (here). I decided to feed a deep neural network all of the Magic cards ever made in the hopes that it might be able to conjure up some new ones.


Some of the cards the A.I. creates are a lot funnier if you know a bit about the rules of Magic. But some of them are just uproarious piles of world salad. For example:

Slidshocking Krow
Creature - Dragon
Tromple, Mointainspalk

Some of these cards technically function within Magic’s rules—but they do utterly nonsensical things, like a card with this ability:

3, : Add 2 to your mana pool.

Even if you know nothing about Magic, you know that paying three of something to get two of that same thing is a bad deal.


But things got really interesting when a Twitter account started rendering cards using some of the A.I.’s designs. Using the Twitter handle @RoboRosewater (a reference to Mark Rosewater, the actual human head of Magic R&D, who has himself joked about the A.I.), the account posts a new card every day. Some are sublime.


We need a rules revision that will allow Tark’s Flowstork to count as both spell types for Tarmogoyf.


Some cards sound like Bono and Ronnie James Dio wrote a song together.

“Aaaaaaangellllll Desiiiiiiiyaaaaaah.”



A few are actually really good Magic cards. Maybe a little too good. I mean, not Mointainspalk good, but pretty good.

Wait, “hall Saproling”?


On occasion the A.I. clearly seems to be trolling us. Read the last part of the card text carefully here.


Sometimes it just fails.

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