Burning a hole through existence

Mechanics behind the portal

The border to other planes has always been thin in Shaema. If you wanted to burn a hole in said border, this would be the ideal land to do it in. Zebris qe Mrak infused many bones with evil-natured spirits and made a circular gate out of them. After this was done she released the biggest part of the spirits from the bones. The high concentration of spirit forced a passage to lower planes, punching a hole in the border. The remaining spirit in the bones kept contact with its whole. The hole in the border closed off, except where the bones framed the gate.

The gate now leads practically nowhere. A cyst of existence in the fabric of nothing. A micro-plane of its own. A hole inside a crater that is Shaema. As water seeks the point of lowest elevation, so does spirit seek the point of least resistance as it tries to pass on. Any spirit that comes near this cyst is in danger of being sucked in. This is exactly what Zebris needs; a lot of spirit to fuel a fire. A fire capable of burning a hole through to the other side of her cyst.

But it takes a special kind of flame to ignite spirit. Purge-fire can be found in many lower planes, but Zebris knows no way to transfer it here. However, she does know how to transfer messages. She writes a message on spirit matter and hopes for the best/worst. Some demon answers her call and sends her a message on a peculiar spirit. The message tells her to graft the spirit on an embryo, feed it spirit infused sulfur and perform various rituals. She does this with a kobold egg.