Rise of the Runelords
B12 Shrine to Lamatshu
"The tunnel widens here into what appears to have once been a small shrine, for to the northeast, steps lead up to a platform of gray stone. Sitting atop the platform is an ancient altar, little more than a jagged block of black marble with a shallow concavity on top of it. This basin is filled with what appears to be filthy water."
Unlike the other Runelords, Alaznist was a woman of faith-faith in ruin, devastation, and wrath. While she had an alliance with the nascent demon lord Yamasoth, she drew inspiration from all demon lords. She encouraged her minions to venerate demons as well-she cared not whom they revered, as long as they were destructive. The demon queen Lamashtu was a favorite choice, and the Mother of Monsters was the Scribbler's patron. The Scribbler used this altar to commune with Lamashtu-Erylium uses the altar for the same purpose, and it was here that she baptized Nualia and began to teach her.
The basin on the altar constantly generates 4 doses of the waters of Lamashtu (The Inner Sea World Guide 297). It was by drinking this vile fluid that the goblin Koruvus became the mutant he is today. If harvested from the altar, the waters degrade to normal unholy water after 1 hour-the altar replenishes itself at the rate of 1 vial's worth per day.