“There’s more happening in Ilmurea than you may realize. The serpentfolk are preparing something big, something that’s a threat not just to those living here in Saventh-Yhi, but to the whole surface world. It has to do with their god, Ydersius, now called the Headless King. Long ago, in the time of Azlant, the serpentfolk had a huge empire—they controlled almost all of the Darklands known as Sekamina. And Ydersius walked among his people on Golarion, a true living god.
“Eventually the serpentfolk set their sights on the surface world, and challenged Azlant for supremacy over all of Golarion. The Azlanti could only fight them to a standstill, until a great hero named Savith led an army into Ilmurea to crush the serpentfolk once and for all. In Ilmurea, Savith faced Ydersius and beheaded him, finally breaking the power of the serpentfolk empire.
“No doubt you’ve noticed that there’s more than one type of serpentfolk—
the big, dumb, degenerate brutes and the smart, conniving ones, with magic. In the old days, most of the serpentfolk were of this more powerful, advanced ‘purecaste’—the degenerates were apparently bred only for war. But with Ydersius’s defeat, the serpentfolk empire fell into decline.
Most of the purecaste serpentfolk went into a sort of magical sleep or hibernation, while the descendents of the rest eventually devolved into the monstrous degenerates.
“Occasionally, though, a purecaste serpentfolk is still born today. And one of them, a priest of Ydersius called Vyr-Azul, plans to resurrect Ydersius. He’s actually found the god’s skull, and believes that he can reunite the serpent-god’s head and body and restore Ydersius to his former power, heralding a new age, restoring and evolving the serpentfolk, and bringing back their empire of old. If true, this could prove disastrous for us all. “Scholars say the Azlanti, even at the height of their power, struggled to defeat the serpentfolk while Ydersius walked Golarion.
But human civilization isn’t nearly as advanced today. We’re far too fragile and fractured, unprepared for a serpentfolk resurgence. They could wipe out or enslave every living thing in the surface world. At best, we’ll become their slaves. At worst, they’ll keep us in their larders like livestock until they eat us. That’s what happened to the rest of my party when the snakes captured us—all of them, eaten alive.
“But we have an opportunity to avoid that fate. You’ve already proven yourselves by entering the heart of their domain to rescue me. We’ve got to go back down there and stop Vyr-Azul before he brings back Ydersius!”