Rule evolution
Rule 107.4a
Earliest archived Rules release: 2009-10-01 · 0 wording revisions · 0 renumberings
Earliest archived Rules release107.4aDetails
There are five primary colored mana symbols: {W} is white, {U} blue, {B} black, {R} red, and {G} green. These symbols are used to represent colored mana, and also to represent colored mana in costs. Colored mana in costs can be paid only with the appropriate color of mana. See rule 202, "Mana Cost and Color."