Mabar is the plane of darkness, entropy, and undeath—a realm where light is devoured, life is drained, and hope is a fragile flicker in an ocean of shadow. Known as the Endless Night, Mabar is not simply a place of gloom; it is the metaphysical embodiment of negation, the force that unravels existence. Where Irian represents life and growth, Mabar is its antithesis: the hunger that consumes, the silence that follows the last breath, the void that waits beyond the edge of reality.
The landscape of Mabar is oppressive and surreal. It is a realm of endless twilight, where the sky is a starless void and the ground is cold, barren, and often broken. Forests of petrified trees stretch across desolate plains, their branches clawing at the air like skeletal fingers. Cities of bone and shadow rise from the dust, inhabited by spirits and creatures that have long since abandoned warmth and memory. The air is heavy, not with moisture, but with despair—a palpable weight that presses on the soul.
Mabar is the source of negative energy, the force that fuels necromantic magic and sustains the undead. It is the wellspring from which vampires, liches, wraiths, and other deathless beings draw their unnatural vitality. When Mabar becomes coterminous with the Material Plane, its influence manifests in chilling ways: healing magic falters, shadows deepen unnaturally, and the dead may rise without cause. These periods are feared across Eberron, often marked by plagues, hauntings, and spiritual unrest.
The plane is inhabited by a wide array of undead and shadowy entities, many of which are not merely monsters but manifestations of Mabar’s hunger. These beings do not live—they persist, driven by the need to consume life, light, and emotion. Some are intelligent and ancient, ruling over domains of darkness with cruel wisdom. Others are mindless, drifting through the gloom like echoes of forgotten pain. The most terrifying among them are the shadowfiends, creatures that exist only to extinguish the spark of life wherever they find it.
Mabar’s influence is not limited to the physical. It also affects the spiritual and emotional realms. Prolonged exposure to the plane—or to its touch on the Material Plane—can lead to depression, apathy, and a loss of will. It is said that Mabar does not merely kill; it erases, stripping away identity, memory, and meaning. This makes it a potent force in stories of corruption, despair, and existential horror.
In the Draconic Prophecy, Mabar represents the end of cycles, the inevitable decay that follows creation. It is the shadow cast by every light, the silence that follows every song. Yet it is not evil in the traditional sense—it is necessary, a cosmic counterbalance to growth and vitality. Without Mabar, there would be no death, no rest, no release. It is the final punctuation in the sentence of life.
Despite its terrifying nature, Mabar is not inaccessible. Certain rituals, artifacts, and magical phenomena can open portals to the Endless Night. Necromancers and warlocks may seek its power, though such bargains are always dangerous. Some cults worship Mabar as a divine force, embracing its promise of oblivion and rejecting the illusion of life. Others seek to bind its energy, using it to create undead servants, curses, or weapons of despair.