Powerscore has just the thing this week, an exhaustive article showcasing EVERY published D&D reference about Mordenkainen the archmage leader of the Circle of Eight. Yes, every article, novel, sourcebook, core book, etc, is picked over in order to give you the big picture on this most enigmatic champion of the Balance. I've had my own theories on what Mordy's trajectory has been in the last couple decades, and this article helps shine a light on some more recent 5E references that I hadn't even read before! Mind you this article does contain spoilers, so players beware! DMs, enjoy!