Camazotl the Lesser

Camazotl is an opportunist fiend that found a way into the mortal realm via ancient ritual and invocation, taking advantage of a dangerous moment of alignment between Goblin, Orc and Human devotion to the secretive darkness and the totem symbol of the Bat.

• The Clot-Cutter goblin tribe had long venerated were-bats, with their chieftain undergoing ritual infection. This practice stemmed from a time when they possessed a magic item made by the prolific wizard Quindarin some 3 centuries past, the Staff of Bat Swarm.
• Likewise the Orc tribes have always had a bat god, Shargaas, in their pantheon, and when their War Chief Malbyish of the Blade Wardens committed the repugnant crime of cannibalizing their allied tribe, the White Spears, he was blessed by Camazotl in the form of Shargaas and rewarded with power, an (admittedly weak) magic ring and the promise of much more for faithful servitude.
• He also drew power from the 'enlightened' Gnoll tribe that had somehow stumbled into the Yuan Ti temple while it slumbered under the weight of snows and years, and finding a compelling silver Idol, fell into adoration of Shesemu, an ancient deity of evil worshipped by the Yuan-ti as an emanation/avatar of Dendar, in which she appears as a flared cobra sporting enormous batlike wings. As this worship was misplaced and misdirected by the Gnoll tribe, it was easily appropriated by Camazotl to itself.

But it all came together when the errant con man/failed priest named Naphan Agrippa came to town selling copies of his book, "The Comforts of the Voiceless God". Finding little interest in his proselytizing at the Keep and deciding that the savage Orcs might be simple enough to trade some gold in return for magic books, he visited the Orc Tribes hoping to recruit some to his cause and faith, or at least sell a crate or two of his books, but instead the sly War Chief Malbyish gave Naphan the magic ring, "Voice of Shargaas", to ruin Naphan's pitch and literally give the Voiceless God a Voice - the sort of turnabout that an Orc would find hilarious. But rather than upturning the god Naphan worshipped - let's be honest, his real god is money - Camazotl instead seized the opening this gave it to set its fiendish hooks into the man and leverage him for more than he could ever get from some half-lunatic cannibal Orc.
Camazotl's visions led Naphan to the abandoned and ancient Yuan-Ti Temple that was left under mysterious circumstances. In the guise of a voiceless bat-god, it showed him the ritual of the sacred vessels and through Naphan as a physical body able to cast spells, cursed them to enthrall those drinking from them into mind-controlled worshipper-slaves. Camazotl also brought several waves of Xvart followers from their stone cave lairs further north, and they in turn began a serious kidnapping operation bringing dozens of cult followers who drank from the cursed cups and joined up. In the meantime Naphan kept up appearances and recruited several people in town - living the high life and paying for what he could with gems and loot found in the temple as well as the sale of more books, though he had mostly abandoned that faith as well, believing only in the Voice rather than the Voiceless now. Unfortunately even with sales of a few gems to Icies Veiss, cashflow was always a problem.
But Camazotl wants to be brought physically into the world to dominate it 'in the time remaining', and to create the portal to accomplish it, he needed the Fang of Dendar from this temple as well as the staff of the Bat Swarm, which had been made by Quindarin originally, as had the ring, the Voice of Shargaas; in addition to being a powerful conjuration wizard, Quindarin had also been a master enchanter and had for a time bound Camazotl for a conjuration experiment involving moonlight, a basilisk, and Fiend blood. Camazotl sent Naphan to the werebat-loving Goblins to recover the artifact they had claimed from his ruins, and since now everyone was on the same side, they permitted it to go back with him, and sent along 2 of their 4 guardian giant bat skeletons as well.
It was at about this point that Willow Candler, an occasional visitor to the Yuan-ti pantheon Gnolls in J, was told about things. Kenet-aten, their Gnoll Chieftain and a friend of Willow's, mentioned that some humans had been along to restore the temple of Dendar's Fang, but that it seemed to be rededicated to their own God Shesemu, the Yuan-ti-adjacent demigod whose domain included blood, moonlight, oil, and the bat. Willow smelled a rat (bat?) immediately, being aware of the Shargaas shenanigans over the winter, and already scheming to try to get that staff from the Goblins due to her interest in/obsession with Quindarin, certain it was needed to unlock his inner chambers in the Cave of the Unknown. She went to the ancient temple, and after shrugging off their attempts to overpower her, searched everywhere for the staff. Naphan had wisely kept it in the lead case but he knew Willow would be looking for it there, and would never think she'd bring it back to his house to perform the ritual. He moved the staff back home in its lead-lined case, but moving the fang was a different problem.
His clumsy attempts at digging the 2' long sliver of yellow, poison-soaked ivory out of the center of the altar aroused the notice of the mostly-disinterested Yuan-ti guardian spirits, who awakened Ophidra, their high priestess - a medusa form of a Type 3 Malison, a snake-haired humanoid on top and a snake below the waist - to expel this 'smoothmeat' and his fellow fleas from their temple so they could return to their slumber awaiting the turn of worlds. But by now Naphan had quite the operation going, and the skeleton bats were happily immune to her petrifying affects, so she was, without a great deal of fuss, relegated to a deep wastewater pit below the Sow Pens, where Naphan was desperately raising the food supplies needed to feed his cultists and the giant bats that had been gathering in the temple. Once Ophidra was neutralized as a threat, he attempted to pry out the fang, but it was anchored in place - even when he smashed the rest of the altar around it, the fang was as immobile in midair as if it were buried under a mountain of solid rock. With great effort he was able to slice a thin sliver, only a little more than a toothpick, off of it, and with that he performed the ritual in his own home using a sliver of the fang to bring a sliver of Camazotl into the world - a disappointed and angry sliver, in the form of an incomplete fiendish Blackguard. This all had to happen before the next cosmic alignment, and time was running out to implement any of Camazotl's grandiose plans.
At that point, some adventurers started making trouble, poking around where they shouldn't be. Naphan decided to try to make them into cult slaves, or at least grab one and the others would follow. When that didn't work, the giant bats and the Blackguard began taking revenge on those who had followed but then failed them - first the incompetent Acolytes, then Malbyish. The confrontation between the adventurers and Camazotl's forces ended with Naphan dead and the sliver dis-animated, as well as the Orcs cut down and the Gnolls' worship put to the sword; now Camazotl is down to some pathetic Goblin minions, blind with rage and anger, and powerless to do anything to stop Ophidra from re-consecrating the Yuan-ti temple.