Yeah, I meant the later. Nature Transformation is the counter-part to Shape Transformation. We know one way of doing it is just learning a lot of jutsu using that nature, as we got the Yin affinity, but I'd think there would be specialized training methods.@Trondason Nature Chakra is like ninja uranium, you don't casually fuck with it.
@edit: If you meant elemental shenanigans, don't know, they just sorta do it? Probably some underlying way in every jutsu.
@ryuan what does Affinities do, BTW?