Quote Originally Posted by Zeful View Post
Except in Naruto they're mostly unneeded. The Sharingan is still hax if it it just has the abilities to give color to chakra and increase the framerate of the user's eyes (which are required if it can copy techniques). All the later forms of it and its derived techniques don't add anything to the setting, especially with Tsukiyomi being as powerful as it is. What's wrong with Zabuza's sword being a perfectly normal, if incredibly large, sword?
The problem is that the sword would so pale in comparison to the others that it would be a joke. Kishi wanted to avert the Sorting Algorithm of Evil here, which is hard when you're trying to make a credible threat out of the first villain in the manga.

....

Mizuki doesn't count.