Know where your deck stands before the game starts. Rule 0 checks it against the official Commander Brackets and shows you how to make it better.
Search for your commander, then add a partner, Background or companion if you have one.
Works with exports from Moxfield, Archidekt, EDHREC, MTGGoldfish, Arena or plain text, one card per line, like "1 Sol Ring". You can also drag a .txt or .csv file onto the box.