Volnagur

Of all Rovagug's spawn, the creature known as Volnagur is the one that has most distanced itself from the Dead Vault at Golarion's core, instead making its home among the skies. Volnagur possesses many wings, and they're mismatched, asymmetrical, and uncoordinated, yet the massive spawn is capable of powerful flight that carries it as far as Arcadia, Tian Xia, and even Sarusan. Though capable of wreaking great destruction with both its many razor-sharp tongues and powerful blasts of energy from its four eyes, Volnagur's most fearsome ability is the discordant song produced by the precise angling of its wings against the wind, which drives all who hear it to violence, setting neighbor against neighbor.

Though not spotted for decades, astronomers have recently located a satellite in the upper bounds of Golarion's atmosphere, where Volnagur hangs motionless. As it drifts from continent to continent, its eyes seem to alternately turn to the moon, then back to Golarion, as if waiting for a signal.

Though the destroyer god Rovagug lies trapped in the core of the planet like a fly trapped in amber, imprisoned since the Age of Creation by a coalition of deities, his cage has weakened with the passing of time, allowing his influence to seep forth and take form as living calamities known as the Spawn of Rovagug. These massive creatures have plagued Golarion for eons, their rampages responsible for shattered mountains, blasted deserts, and oceans that now fill craters in the earth, and their regenerative abilities ensure they're an eternal threat, never fully killed. That these creatures of utter destruction hold such a inextinguishable grip on life is a paradox scholars struggle to resolve. Some believe that each Spawn possesses the smallest fragment of their divine parent's blessings; others posit that their immortality comes from the destruction they cause, gaining an eternal future for every one stolen from their victims.

Accounts of the Spawns' attacks throughout history have an odd through line: each attack is followed by a notable, if brief, golden age for the region. While most attribute this to the cooperation required to fend off or at the very least survive a Spawn's depredations, some see this is a twisted sign that the creatures are bringers of "true" peace. These believers often lead cults intent on calling forth or reviving any recently slain Spawn.

Though many of the Spawn haven't been seen in years, the death of the god Gorum—one of the original architects of the Dead Vault—has weakened the seal once more, sending a ripple of Rovagug's will throughout Golarion. As if in answer, many of his Spawn have begun to reemerge, alarming Golarion's leaders, scholars, and warriors. After all, if a single Spawn is a generation-defining disaster, requiring the sacrifice of armies merely to minimize the damage it can cause, what unimaginable destruction would occur if all of them were to awaken at once?