Mindscape

A mindscape, also referred to as a dreamscape, was a reality that existed within an entity's psyche.

Appearance
Each mindscape differed as according to its creator. Some appeared rather mundane, as near-exact replications of the Prime Material plane, while others appeared as twisted versions of real locales.

Attributes
Metaphysical rules different between each dreamscape, and forces such as gravity and time functioned differently than in the Prime Material plane. Each dreamscape was finite in size, but highly morphic in appearance determined by the dreamer.

It was often possible for individuals to venture into these realities, and in some cases alter the dynamics within. These actions would then have tangible effects back in physical reality, even leading to injury or death for the dream-traveler. In other instances, anyone venturing into a mindscape were mere witnesses to thoughts or memories and otherwise remained free from harm.

Magic in dreamscapes often worked differently than when cast in the physical planes. Simple spells were more likely to function normally, while more complex castings often had unexpected effect or simply failed outright. Oneiromancers could better control these effects while traveling within a dreamscape, while the practice of 'dreamtelling' allowed spellcasters to better predict what may occur within.

The dreamscapes of outsiders were said to be extremely dangerous, with realities that were extremely alien to the minds of others.

The islands created by morkoths were said to share many traits found in dreamscapes.

Admittance
Some spells such as dream walk allowed for one or more individuals to readily travel through the dreamscapes of other beings.

The journey into a dreamscape was a gradual experience and the borders between it and surrounding existence were never well-defined.

History
In the, a group of adventurers were pulled into a horrific dreamscape when resting in the village of Stormpemhauder.

Inhabitants
Nearly any imaginable type of creature could be encountered within someone's dreamscape, so long that it could be conceived of by the dreamer.

There were some horrific dream-spawned monstrosities that lurked within the material in which dreams were made and theoretically could appear within the dreamscape of any being. Notable among these were dreamweavers.

Notable Mindscapes

 * King Hekaton of the storm giants created a mindscape while being tortured in the Mirror Maelstrom on Avernus. It manifested as numerous important memories that appeared throughout the Storm King's life.
 * The Black Cyst within the Temple of the Eye maintained a dream-like mindscape as a line of self-defense against potential intruders.

Appearances

 * Adventures
 * The Elder Elemental Eye
 * Organized Play & Licensed Adventures
 * The Harrowing of Hell