Oh, and Ravnica got lazy with their elves. Supposedly, the Ravnica elves are High or Wood or Dark (but they are not called Drow), but they all look mostly alike--Dark Elves have dark hair, but typically are light-skinned (they still have light-sensitivity, superior darkvision, and innate spells).
Interestingly enough, very few PC races in Ravnica get Darkvision. Only elves, half-elves (which are only briefly mentioned and do not appear on some of the lists of races), the elf/fish/crustacean hybrids, and goblins have it. Hunams, minotaurs, elephant people, blue people, and centaurs do not.