Resources

Magic: The Gathering Comprehensive Rules Changes

Guildpact to Dissension (Single Change View)

General changes

Old rule (Guildpact) New rule (Dissension)

Half-Half Mana Symbols

Each of the half-half mana symbols represents a cost which can be paid with one of two colors: {W/U} in a cost can be paid with either white or blue mana, {W/B} white or black, {U/B} blue or black, {U/R} blue or red, {B/R} black or red, {B/G} black or green, {R/G} red or green, {R/W} red or white, {G/W} green or white, and {G/U} green or blue.