The Far Realm

The Far Realm, also known as the Outside, is a plane or perhaps a space beyond the planes that is terrifyingly remote from the standard planar geometry. The entities that abide in the Far Realm are to inchoate, too different, and too alien for a normal mind to accept without being damaged.

Where stray illuminations from the Far Realm leak onto another plane, matter stirs at the beckoning of inexplicable urges before burning to ash transforming that plane's area to a similar place as the far realm. But in the Far Realm, titanic creatures swim through nothingness, preoccupied with madness. Unspeakable things whisper awful truths to those who dare listen. For mortals, knowledge of the Far Realm is a triumph of mind over the rude boundaries of matter, space, and eventually sanity.

The Far Realm is divided into an unknown number of layers. Each layer is only slightly out of phase with the next, and passing between layers requires only a thought. It's possible to stand on one layer and see dozens of others, all overlapping yet somehow distinct.

Traits

 * No Gravity: Entites of the Far Realm float in dark nothingness. the only type of movement is passage between layers, which requires only a thought.
 * Flowing Time: A minute in the Far realm equals no time on the Mortal Plane. The Far Realm is outside time, existing both before and after time's reign. Words like "before" and "after" hold no meaning.
 * Infinite Size: The Far Realm contains infinite layers, though the layers themselves are not infinite. It is easy to get lost as those that surveyed the far realm were lost due to the infinite layers.
 * Highly Morphic: The layers continually evaporate, divide, spawn, and breathe at the behest of the alien entities that drift through them.
 * Sporadic Elemental and Energy Traits: Conditions are always in a state of flux in the Far Realm, and it's entirely possible that a given layer could burst into flames as it gains the fire-domain trait. Usually, changes the elemental and energy trait of a layer are seen far off, moving from layer to layer as a storm moves across the face of a normal world.
 * No Alignment Trait: The Far Realm has nothing to do with morals or ethics.
 * Wild Magic: Casters must roll a level check. A failed check indicates a result on the Wild Magic Effects table.
 * Maddening: Moving through the Far Realm is to see, hear, and think in a way that mortal brains are not deigned for. Travelers might sprout eyes on their palms, relive a hundred childhoods simultaneously wherein their parents were secretly Far Realm wights, or backward speaking begin. Entry into the Far Realm requires nonnatives to succeed a Will Save (DC 20), 100 stress, or (special circumstances). Regardless of if they make their saving throw, visitors will gain stress every hour they spend on that plane.

Links to Other Planes

 * There are only a few known portals to the Far Realm, the most known one is the one in the Mad Nexus as it leaks onto the Mortal Plane and it is the Slayer's job to hold back what comes out of the Far Realm, and find a way to purify and drive the Far Realm Beings back. The other portals are more secretive to the respective guild and factions that know about it.
 * Other methods of reaching the Far Realm include traveling to time's beginning or end or find the True Interceptor as only they are able to travel the Far Realm without consequences. Those that receive The Interceptors Blessing are able to travel the Far Realm with no consequences.

Inhabitants
Entities of the Far Realm defy Ordered classification. Certainly, countless types crawl through the infinite layers. Some are like animals, others vaguely insectoids, many are sentient, and some are as powerful as deities, Some even beyond the power of godlike entities. When confronted with the Mortal plane beings, or even creatures normally associated with the Inner and Outer Planes, a Far realm entity often takes the form of a creature familiar to the viewer.

Features

 * The Far Realm is composed of infinite layers. These layers are relatively thin compared to other layers and other planes of existence. The layer can range from an inch to a mile thick, but on average each layer is separated from the other by about 10 feet. However the length is infinite.
 * Travelers can see through many layers simultaneously, as if holding a stack of translucent parchment up to the light. Usually up to twenty layers can be seen to one side or the other, through each layer is blurrier than the next however those typically lose there mind attempting to perceive this realm.
 * Features and creatures of the Far Realm are multidimensional and may exist on more than one layer simultaneously. Such existence of this eldritch influence from the tentacled vegetation that writhes through the Far Realm, to massive, drifting entities whose existence is too vast to even notice visitors who only occupy a single layer at a time.