Due to the shinobi basic logic, I've concluded that there is a new rule added to blind faith rpg4. In chakra nature, shinobi can have only up to 2 of maximum jutsu elements. Whether it's a minor or a major, it is is counted as an element. Combined elements count as one element for now btw. (FYI, examples of combined elements are Ice, Wood, Dirt, etc.)
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If there are more elements to your nature (which is possible) there must be a brief explanation of how you can do it. For example..natural bloodline, copying ninjutsu, borrowing the abilities of a shinobi, or any of that sort. Anything unreasonable will be known as god modding.