DM: Erylium

As the party prepares to leave the prison, a portal opens up a few feet on the wooden platform above. From within, a huge room lies beyond looks like nothing more than an immense underground cathedral. From the looks of the stonework and design, it seems to still be part of the catacombs yet from a place the party has yet to explore. The walls are carved with strange, spiky runes. In the center of the room is a large pool, a ring of polished human skulls balanced on stone spikes arranged in a circle around the deeper midsection. At the far end of the room, a pair of stone stairways leads up to a pulpit on which sits a second pool. This one is triangular and filled with churning, bubbling water that looks almost like translucent lava.

At the back of the room, perched on the pulpit edge, you can see a smallish winged humanoid, with a greeny-black flesh tone, long white hair, and adorned with many bangles, and a fine red stone head-dress. She seems to be staring at you all from her perch 50 feet away.

The small winged creature flies into an incandescent rage. She takes to the air easily, fluttering above the blood red pool on the raised dais, spitting vitriol at you.

"How dare you intrude upon the Mother's sanctum? How dare you intrude upon MY realm? Where is Nualia? Where is my general? She made and gave her power and she’s supposed to be protecting me!”

Her face contorts in a scowl as she brandishes a small dagger and slashes hard at her wrist, drawing a thick rivulet of blood that spills from her arm into the well.
The waters of the boiling red pool glow brighter, briefly, and more agitated, and slowly, from the depth of the tiny pool a hideously long arm appears. It claws the ground, its two long fingers making it all too recognizable as another Sinspawn. The creature pulls itself from the pool, fresh with red liquid, as if it has just been birthed.

The flying creature laughs delightedly at her power, but then the pool fades, as if drained of some of its power. The waters quiet down. The red glow becomes less noticeable. The just birthed sinspawn itself seem to be likewise drained of power. Her face contorts in concern, and then further rage. She turns to face you all, spitting one last curse in your direction.

"I will feed it your deaths! That will replenish it!"

With that she order’s the sinspawn to attack. It gives out a roar and jumps out of the portal and unto the prison floor.

Battle is once again upon you.