The Cyst

The Cyst is a shell that protects the portal to the prison of Tharizdun’s mind, a demiplane that orbits the last layer of the abyss.

Description

The Cyst is a massive, egg-shaped shell made of a thick black and porous stone-like material. The material behaves similar to dead stone, it resists all attempts to damage, transmute, or otherwise affect it using magic or physical force. Any spells cast at the shell are absorbed and redirected back at the caster.

If not embedded in walls, rocks, or other solid surfaces, the Cyst will float in the air, hovering two feet above the ground. When inspected closely, the shell contains multiple runes and sigils that seem to shift and change when observed.

The shell is warm to the touch, and a faint hum can be heard when one touches their ear to the surface.

Accessing the Portal

To access the portal, one must touch the shell with their bare hand while holding the key to the prison of Tharizdun’s mind. The key is a small, black, and perfectly smooth grain of sand. When the Cyst activates, the shell will open, revealing a swirling vortex of black and purple energy. This portal leads to the prison of Tharizdun’s mind, transporting only the person who activated the portal and anything or anyone they are touching. Once used, the portal will close, the shell will return to its dormant state and a random grain of sand across the multiverse will turn into the key to the portal. When leaving the prison, the portal will return the person to the exact location they left from, regardless of the time spent in theprison.

History

The Cyst was created by the True Gods to contain Tharizdun’s mind during the Creation Era. To ensure that the prison would not be accessed by anyone, the True Gods created the portal to require a key that would be impossible to find. The key was then scattered across the multiverse, ensuring that no one would ever find it.

Locations

The Cyst can be found in the following locations:

Echo Planes

The Cyst can be found in the Echo Planes, a series of planes that echo the events of the Material Plane. These are the options for the location of the Cyst in the Echo Planes:

Table

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Liminal Planes

The Cyst can be found in the Liminal Planes, a series of planes that exist between the other planes. These are the options for the location of the Cyst in the Liminal Planes:

Table

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Metaphysical Planes

The Cyst can be found in the Metaphysical Planes, a series of planes that exist within the Material Plane. These are the options for the location of the Cyst in the Metaphysical Planes:

Table

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Elemental planes

Table

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Metapsychic Planes

The Cyst can be found in the Metapsychic Planes, a series of planes that exist beyond material plane and create the minds of sentient beings. These are the options for the location of the Cyst in the Metapsychic Planes

Table

d20Metapsychic PlaneAlignment
1Mount CelestiaLG
2BytopiaNG, LG
3ElysiumNG
4The BeastlandsNG, CG
5ArboreaCG
6YsgardCN, CG
7LimboCN
8PandemoniumCN, CE
9The AbyssCE
10CarceriNE, CE
11HadesNE
12GehennaNE, LE
13The Nine HellsLE
14AcheronLN, LE
15MechanusLN
16ArcadiaLN, LG
17-20The OutlandsNN
-YawnohimNone/Hidden
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