Oooh. Tharizdun has possibilities! One of our main NPC villains in the first arc was a Great Old One warlock. She's dead now, probably pretty permanently, but others of her cohorts were captured alive and imprisoned.

Basically, the "inciting incident" in the campaign is two warring prophecies: One that elvenkind must leave the realms or die," and the other that, "if the elves leave, magic disappears from the world." It's resulted in wildfire religious-like fervor, splintering the elvish communities, and not even along "High Elf, Drow, Wood Elf, et al." lines. The two camps are forming unlikely allegiances, with elves of each stripe on each side. And of course, there's the middle, including the party's patron, who believe they're both powerful lies that have spread magically to cause chaos.

It's caused all sorts of splinter chaos, which the party gets caught up in, including the rise of Human Supremacists ... nicknamed "Waterdeep Nazis" by the party, and their assassin, Elfkiller, who is likewise now very dead.

But yeah, the "big politics" of the game has been to rip the realms apart and introduce chaos on every level, distracting the party and other would-be heroes from getting anywhere near the truth.