
Hello my friend!
I'm going to tackle these questions in reverse order, and give you some advice on your concept.
Elementals are present throughout the entire world of Hydaelyn. They are the -elements- of the world. Within the Twelveswood, because of very specific circumstances they are comfortable enough to show themselves at times and have established a relationship with the Gridanians. Basically there are elementals in every bit of the world, but they don't all possess the same strength and most are very shy.
As presented in game, Conjury is a very specific form of magick taught in a place known as the Stillglade Fen, long since learned from Moogles. I disagree fully that you do not need specific training for the specific art of Conjury as without spoiling much the entire questline revolves around helping someone who's doing it wrong. It can be inferred that that is not the only way to bungle it up and therefore to perform Conjury as the Gridanians do you would need to know the spells and rituals of the Gridanians.
So how do we make a nature magick-oriented Raen then?
You're on the right track with your ideas. Being taught by a shaman or spiritual leader of some sort could easily have them learning nature magicks. The idea of her grandmother teaching her something akin to Conjury is perfect. It could perhaps have a bigger tinge of Animist beliefs and therefore incorporate the spirits of the world in a very Asian style.
Another idea if your desire is to be as close to a Gridanian conjurer as possible is being a hearer.
A hearer is a Gridanian term for a person who has been born with the amazing ability to hear the elementals. This seems to be an ability you're born with, though others can reach similar levels of communion with extensive training.
Your Raen could be born a Hearer in a faraway land. Taught in the nature magicky ways of her Granny.
I hope that's clear, ask me more if it's not, I like helping.
Take it easy.
I'm going to tackle these questions in reverse order, and give you some advice on your concept.
Elementals are present throughout the entire world of Hydaelyn. They are the -elements- of the world. Within the Twelveswood, because of very specific circumstances they are comfortable enough to show themselves at times and have established a relationship with the Gridanians. Basically there are elementals in every bit of the world, but they don't all possess the same strength and most are very shy.
As presented in game, Conjury is a very specific form of magick taught in a place known as the Stillglade Fen, long since learned from Moogles. I disagree fully that you do not need specific training for the specific art of Conjury as without spoiling much the entire questline revolves around helping someone who's doing it wrong. It can be inferred that that is not the only way to bungle it up and therefore to perform Conjury as the Gridanians do you would need to know the spells and rituals of the Gridanians.
So how do we make a nature magick-oriented Raen then?
You're on the right track with your ideas. Being taught by a shaman or spiritual leader of some sort could easily have them learning nature magicks. The idea of her grandmother teaching her something akin to Conjury is perfect. It could perhaps have a bigger tinge of Animist beliefs and therefore incorporate the spirits of the world in a very Asian style.
Another idea if your desire is to be as close to a Gridanian conjurer as possible is being a hearer.
A hearer is a Gridanian term for a person who has been born with the amazing ability to hear the elementals. This seems to be an ability you're born with, though others can reach similar levels of communion with extensive training.
Your Raen could be born a Hearer in a faraway land. Taught in the nature magicky ways of her Granny.
I hope that's clear, ask me more if it's not, I like helping.

Talks the talk, and walks the walk.
Serious, lore-abiding, mature roleplayer.
Serious, lore-abiding, mature roleplayer.