Rhaenys is Azor Ahai

I'm new to this forum. So far I've read the first three Mistborn books and I plan on reading the Alloy of Law after that Warbreaker and then the Stormlight Archives. Mistborn to me seems like a mix between Lord of the Rings and A Song of Ice and Fire. Not because of the storyline or anything- just the magic. In Lord of the Rings there are people who have A LOT of magic (whether it is used for good or evil) and then there are those people with a little bit of magic etc. BUT Tolkien (at least not in LoTR or the Hobbit) does not explain how elves etc gain the magic from and what effects it has on everyone- it's just there. Meanwhile in ASOIAF you have a 'realistic' world where there is barely any magic (that is mentioned or 'experienced') yet in the prologue of A Game of Thrones- magic (of the Others) is the main thing that happens in the chapter. And then you have Mistborn which (I think) is perfect in terms of magic, there isn't too much nor is there not enough. It is also explained well- does Tolkien explain exactly how Sauron made the Nazgul- no he doesn't. Does Marin explain HOW the Others use their magic?- no he doesn't (although it could happen in the later books). Yet Sanderson explains how the Inquisitors, koloss and kandra are made, how Allomancers were created, the whole struggle between Ruin and Preservation. While I love both LoTR and ASOIAF- the magic in their worlds isn't done properly (although in ASOIAF the story is good because it's very political with only a tiny bit of magic involved while with LoTR what makes it good is the whole thing about how friends are important and how good self motivation is etc).