“The Chronicles of Thomas Covenant”
I would LOVE to see this done via Netflix. 3rd book in the 1st trilogy IMO is the best single book I’ve read outside of the Bible.
The Power that Preserves: It is certainly in my top three (outside the Bible).
Amazing prose. Martin is called the American Tolkien. I say it is Donaldson.
I suggest you read The Riddle-Master trilogy by Patricia McKillip. She was Donaldson’s protege.
I also recommend the “space trilogy” by C. S. Lewis, especially the last volume: That Hideous Strength. It is also in my top three.