Sure you may.
903.4. The Commander variant makes use of shade identification to find out which playing cards will be in a deck with a sure commander. The colour identification of a card is the colour or colours of any manna image in the price of manna of that card or the principles textual content, along with any shade outlined by its attribute definition expertise (see Rule 604.3) or shade indicator (see Rule 204).
The phrase “plains” is just not a manna image, and though that card itself has an implicit: add a white mana, it doesn’t seem within the textual content of the hiding rule of the runners. And to finish, it doesn’t have an effect on the opposite two aforementioned guidelines:
604.3. Some static expertise are attribute definition expertise. A attribute definition ability transmits data on the traits of an object that will usually be present in one other a part of that object (as in its value of manna, sort or energy/hardness sort line). Attribute definition expertise can add or cancel the knowledge that’s in one other a part of that object. Attribute definition expertise work in all areas. Additionally they work out of the sport and earlier than the sport begins.
204.1. The colour indicator is printed to the left of the sort line immediately beneath the illustration. It consists of a round image stuffed with a number of colours. A shade indicator is often discovered on non -land playing cards and not using a mana value.
204.2. An object with a shade indicator is every shade denoted by that shade indicator.
