In each extreme, from super good, to über evil, there are nuances and naughty little butterfly effects that can suddenly lead to the hero going evil or, hopefully not because it spoils the thrill and is boring, the evil going bad. It´s a grey area too, because going whole 180 degrees might be a bit too much exagerration, but in the far, far land of between good and bad, light and dark, football or soccer,… there are many interesting thinks to philosophize about, such as The reason for the rare use of such modifications might lie in the problem with the suspension of disbelief, it simply doesn´t fit if certain groups of fictional nations, groups, magic fractions, etc.

It would be as if the mighty, wealthy, and strong nations and people in real life would behave unrealistically friendly, tolerant, and open minded. It asks the very logical question why mighty elves, fairies, magicians should unrealistically be good, friendly, and sympathetic if they can rule, insult, and hurt everyone. The elves are one of the rare cases of truly spoiled, evil protagonists just for the sake of harming others, not fueled by money, expanding the empire by waging wars, more motivated by a mentality of being legitimized to do it because of high status. Elves one may have hardly ever seen in fantasy come to play with this premise and show what way a life of wealth and without problems can do with one's personality. Unsuspected, unknown elements that go against the stereotypical description of anything magic or real, are a splendid comedy trope, as they question the whole logic of expectations regarding anything, easily leading to prejudices and problems. The idea of the special, magic days inspired by natural phenomenon, astrology, and seasons is as old as humanity, but in this case, it goes a bit hawire and crop circles are just the beginning. Ritual magic is gone mad, even more lunatic than the lucky fool, in a Shakespearean mythology overload.

Lords and Ladies by Terry Pratchett