[@Double Capybara]

Meh. I believe shamanism was first mentioned by myself in the djinni CS, and that it's been established through even characters like Susa. Note that previously it would have been very limited in scope and self-taught, whereas what Ventus gave to the Rukbans and Y'Qar is much more powerful. If someone is genuinely curious and I end up with a bit more time than I have at present, then I can elaborate upon the differences.