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Plane of Dreams, (Oneirion, The Veiled Dominion)

(Formerly known as the Twilight Expanse)

Oneirion is a neutral-aligned plane that embodies the realms of sleep, dreams, and subconscious truth, where the boundaries of identity, time, and reality become fluid and symbolic. This realm reflects its nature through shifting dreamscapes, glittering voids of starlight mist, and impossible architecture, shaped by the very essence of perception and desire. The plane pulses with quiet awe and surreal revelation, and those who dwell here find themselves drawn into its eternal cycles of metamorphosis, forgotten memory, and spiritual reflection.

TRAITS

Oneirion exhibits the following planar traits:

  • Morphic: The plane is divinely morphic—its reality bends to the will of powerful dreamlords, gods, and the unconscious minds of visitors.
  • Gravity: Gravity varies wildly depending on the region; in lucid zones it functions normally, but in deep-dream reaches it may flow sideways or spiral.
  • Time: Time flows inconsistently. In some regions, seconds may stretch into hours; in others, entire centuries pass unnoticed.
  • Size: Oneirion is effectively infinite, folding in on itself in recursive layers of dream logic.
  • Structure: The plane is cyclical, constantly dissolving and reforming in response to sleeping minds across the multiverse.
  • Essence: Its essence is mixed—drawing both from purity and corruption, for all dreams contain both light and shadow.
  • Alignment: Oneirion is true neutral, but it subtly reflects the mental and moral state of its dreamers.
  • Magic: Magic is highly mutable—illusion, divination, and enchantment are enhanced, while evocation and necromancy may be unstable or suppressed.

DIVINITIES

Oneirion is ruled by Hypnos, known also as Somnus, the god of sleep and the veil between worlds. His presence permeates the plane, gentle and omnipresent, manifesting as mist, whisper, or stillness. Hypnos enforces no law, but instead guides souls into restful transformation and guards the sanctity of the boundary between waking and dreaming. He is attended by the Oneiroi, shadow-winged spirits of individual dreams, and rarely speaks—when he does, even gods fall silent.

Other lesser dream entities, such as the Lady of Painted Memories and the Ebon Sibyl, hold sway over specific dream domains, governing prophecy, nightmare, or the subconscious self.

OUTSIDERS

The denizens of Oneirion include a wide variety of outsiders:

  • Oneiroi: Cloaked, winged dream-spirits who craft and deliver dreams. Neutral, cryptic, and dutiful, they serve Hypnos directly.
  • Morpheans: Shapeshifting thought-forms born of mortal dreams. Often ephemeral, they can be helpful, menacing, or deeply strange.
  • The Forgotten: Unique beings once mortal, now unanchored memories given form—wanderers of the deep dream whose names have been lost even to themselves.

PETITIONERS

Souls drawn to Oneirion are those who sought meaning in dreams, served the mysteries of sleep, or lived introspectively and imaginatively. Petitioners here often relive symbolic echoes of their lives, slowly unraveling into archetypes or merging with dream structures. Some become dream-guides; others fade into the background tapestry, never waking again.

INFUSIONS

Those who attune to Oneirion may experience the following boons:

  • Basic Infusion: Gain immunity to magical sleep effects and +2 insight bonus on saving throws vs. illusion spells.
  • Improved Infusion: Once per day, enter a lucid state (as moment of prescience) in a dream or illusion effect.
  • Greater Infusion: Gain the ability to enter dreams as if using dream travel, or manifest dream-constructs into the waking world temporarily (as major creation, once per long rest).

DENIZENS

Oneirion is home to the Oneiroi, Morpheans, living nightmares, sleepwalkers from other planes, and ancient dream-beasts like the Somnohydra and the Mirror-Treader. Above all sits Hypnos/Somnus, the God of Sleep, reclining beneath the Tree of Slumber, whose blossoms become mortal dreams. His aims are unknowable, but his influence is always gentle—nudging, never commanding.

SPECIFIC LOCATIONS

  • The Dreamwell: A vast, star-filled pool at the plane’s heart, from which all mortal dreams are born and to which they return. Prophets risk madness seeking visions in its depths.
  • The Whispering Orchard: A forest of trees bearing fruit that, when eaten, instill the memories of forgotten lives. Ruled by the Ebon Sibyl, an oracle whose eyes are stitched shut.
  • The Glass Reversal: A massive mirror-city where all things are inverted—laws, emotions, morality. Used as a trial ground by certain dream-gods.
  • The Court of Sleepwalkers: A shifting citadel where mortal minds sometimes meet during shared dreams. Some return changed. Some never return at all.

FINAL OVERVIEW

Oneirion stands as a place where transformation, reflection, and mystery reign. Those who venture here find themselves changed by its mirrors of the soul, either gaining insight and subtle power—or being unmade by what they learn of themselves. The plane’s unique dream-logic shapes all who enter, leaving them forever marked by what they dreamed, and what dreamed them in return.

Oneirion, The Veiled Dominion

(Formerly the Twilight Expanse)

Oneirion is a neutral plane of dreams and inner truth, where subconscious desire, fear, memory, and imagination intertwine. The landscape reflects this, ranging from shifting dream-forests and endless starry voids to floating cities of crystal and forgotten tombs of sleeping gods. It embodies symbolism, uncertainty, and emotional resonance, and its denizens exist in a state of eternal metamorphosis and reflection.

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