Commander Codex

Commander Codex is built for players of Commander, Magic's most popular casual format. Every guess must be one of the 500 most played commanders on EDHREC, and the answer each day is one of them too. It is presented by Archidekt, a free deckbuilding site.

Each guess fills a row with five clues. Colour ID turns green on an exact match and yellow when colours overlap without matching. Mana Value (CMC) shows green when equal or an arrow otherwise. Initial Printing shows whether the answer was released before or after your guess, and Power + Toughness compares the sum of the two. Subtypes go green, yellow or grey depending on how many creature types are shared. The help screen walks through an example where the answer is Queen Marchesa and the guesses are Kaalia of the Vast, Omnath, Locus of Creation and Selvala, Heart of the Wilds.

The daily game gives six tries; when it is over a timer shows when the next daily puzzle comes, counting down to 08:00 UTC. A shuffle button switches to an infinite mode with random commanders, and a stats screen keeps your daily distribution. A colour blind mode adds symbols to each square.

The puzzles are numbered, and the 22 October 2026 Commander of the Day was number 1732. It plays the same in a phone browser, with the five clue columns fitting the screen and a thumbnail of each guessed card beside its row. Finishing a day gives a share button with your grid and a link to Archidekt. There are no ads and no sign-up.