Color Identity

The Color identity of a card is the types of Mana symbols in a card, like how Thornweald Archer (Figure A) has a color identity of green because in its casting cost it has only green, while other cards like Najeela, The Blade-Blossom (Figure B) have a color identity of WUBRG, while it has only red in its Casting Cost. The color identity is made up of all of the mana symbols on a card. if a card has an activated ability that has red mana and itself is a red card, then the color identity is red. if it has an ability with different mana colors, then it is the colors of the activated abilities colors and the cards colors combined.