My favorite D&D novel isn't actually a novel, I daresay, but it is a tip of the hat to this here ol' forum. Cuz it's Sepulchrave's Story Hour, with Eadric and Mostin and all them. I discovered way back in college (when the very first thread was active, I think) and fell in effing love with it. That led me to what's-their-name's Story Hour which eventually had its setting published as a 3rd-party campaign setting called
Valus.
After that, I'd prolly hafta list a novel which is D&D-adjacent ~
Ashes of the Sun, one of the first-run
Magic: the Gathering novels from way back in the day ~ it's on my short list of geeky pop-culture projects that taught me deep lessons about life and helped form who I am. It's an embarrassing, and perhaps thankfully short, list.
Ashes of the Sun was the first text I encountered that argued for the primacy of truth over accuracy, and taught me the magickal power of story, and illuminated the tension between "everyone can be anything if they try" and "people are the way they are because that's the way they are". That last bit helped prepare me to be ready for existentialism in a deep way when I finally came across it ~ existence precedes essence, but both are important. Also, it didn't resolve neatly, like so much schlock fiction out there. The ending was, in some sense, unsatisfying while still tying up the plot. It wasn't a happy ending for the minotaurs, the human martial artist, or the one goblin who managed to still his mind.
Third on my list is an actual D&D novel ~ the first
Dragonlance novel I ever read, believe it or not, was
The Second Generation, which had so many lovely bits of mythopoeia grounded in D&Dness that I just fell in love with it immediately. The sense of wonder spawned from it simultaneously building upon a deep previous background that I didn't know and seeding an unknown future with potential characters and plotlines is a high I've been chasing again for the last, what, 25 years of my narrative-addicted life.
I wonder if you could make a movie work, or at least a short, where everything is viewed through Raistlin's hourglass eyes. Everything is withered or dead looking, yet the plot and dialogue barely acknowledges this fact because that is not the world as it really is.
I would 185% watch this, and would quite happily work with folk on making it somehow (anyone in the SF Bay wanna?) as a fanproject or a "real film"