In the brackets for the card, put *CMDR* after the card name, ex.
1x [ [Squee, the Immortal *CMDR*] ]
May 17, 2018 4 a.m.
strange. i did this in my decklist, clicked save, and nothing happened. when i go back to the editor, i see in my list of cards that the change i made isn't there:
1x Tatyova, Benthic Druid
May 17, 2018 9:56 a.m.
ah i see. in the main decklist, it works to add
one the line after the commander card. e.g.,