Commander Color Identity Explained

Color identity is the set of colors a card belongs to for deckbuilding purposes, and it is broader than the card's casting color. A card's color identity includes every colored mana symbol that appears in its mana cost as well as in its rules text. In Commander, your commander's combined color identity sets the colors your deck is allowed to use, and every card in your 99 must fall within those colors.

Crucially, color identity is about colored mana symbols, not the card's printed color or its card type. A land with no mana cost can still have a color identity if its rules text contains colored mana symbols, and a creature can carry colors it cannot even be cast with if those symbols appear in an ability. This is why two cards that look the same color at a glance can have different identities.

Both the mana cost and the rules text contribute to color identity. If a card costs colorless mana but its ability says it produces or requires green mana, the green pip in that ability makes the card green for identity purposes. Hybrid mana symbols count as both of their colors, and the same goes for cards with colored activated or triggered abilities.

There are important exceptions. Reminder text in parentheses does not count toward color identity, and generic mana symbols, colorless mana symbols, and the names of colors written as plain words in text do not add colors either. Only actual colored mana symbols matter, so you should read the symbols rather than the flavor when you are deciding whether a card fits your deck.

A card is excluded when its color identity includes a color your commander does not have. For example, if your commander is mono-white, you cannot run a card that has a red mana symbol anywhere in its cost or rules text, even if the card is otherwise mostly white, because that red pip puts it outside your identity. This trips up new players who assume a card is legal because of its visible frame color.

The practical takeaway is to check every mana symbol on a card before adding it, including ones buried in activated abilities. Deckbuilding tools and Scryfall let you filter by color identity directly, which makes it easy to confirm that a card stays inside your commander's colors and keeps your deck tournament-legal.