Oneiromancy

*This article uses material from the “Oneiromancy” articles on the Shadowhunter and Superpower wikis at FANDOM and is licensed under the Creative Commons Attribution-Share Alike License.*

**Oneiromancy** is a form of magic by which users are able to control and transport people in dreams.

## Description

Oneiromancy involves controlling dreams using magic. In this condition, the dreamer may feel as if they are transported to another time or place. The practice of this magic can be quite difficult to master.

The powers of the spell do not seem to be able to keep it as a memory. In most cases, the experience will fade just as any dream would, unless you are told beforehand and able to protect against it or work to commit it to memory.

## History

Once her view of the Shadow World was no longer blocked, Clary Fairchild began to receive dreams and visions from the Angel Ithuriel. He used oneiromancy in order to communicate to her ancient runes and to give her prophecies of the coming future.

Later that year, the Greater Demon Lilith used oneiromancy in order to possess Jace Herondale. She repeatedly sent him dreams of him harming or killing Clary, driving him mad with guilt. Eventually she appeared to him in a dream as Max Lightwood and convinced him to take her mark and give himself entirely to her.

While in the Wild Hunt, Kieran used to send Mark Blackthorn dreams when he could not sleep. It was considered a faerie gift. However, after Mark had left the Hunt, Kieran did so again, against his will, in order to find out the truth. He believed him to be lying to him and thought he would not be able to hide his true feelings in a dream.

In 2010, Magnus Bane used the last of the magic from his Svefnthorn wound, to perform a massive oneiromancy spell in order to host a wedding for his close friends Tessa Gray and Jem Carstairs. In order to do this, all the attendees needed to be asleep, including Magnus himself. He was able to weave a beautiful wedding for them on Blackfriars Bridge and was even able to change everyone's attire from pajamas to wedding wear. He sent the summons to all of Tessa's descendants and their other friends and loved ones. He reached out to a couple of the Silent Brothers and even Mark Blackthorn of the Wild Hunt, unsure if either would be able to receive the call. Luckily, they were all able to come, even Church and the spirit of Will Herondale.

In 2029, Toby and Liam Herondale, the twin boys of Clary and Jace, have the power of oneiromancy due to excess angel blood inherited from their parents.

## Known Practitioners

* Ithuriel
* Kieran
* Lilith
* Magnus Bane
* Some faeries
* Toby Herondale
* Liam Herondale

## Capabilities

User can create, shape, enter and manipulate the dreams of oneself and others, including modifying, suppressing, fabricating, influencing, manifesting, sensing, and observing dreams as well as nightmares, daydreams, etc., possibly including past ones. They can produce and modify dreams, bestow nightmares or lucid dreaming, entrap people in REM, and promote spiritual/emotional healing within dreams.

In some cases, user's power extends to the real world, such as wounds inflicted on a sleeping victim, healed damage (mental or physical) affecting the physical form, and other wise blurring the line between waking and dream. They may be able to pull someone from the waking world into the dream world or brings people/things from the dream world into the waking world.

## Powers

Listed below are possible powers that practitioners of oneiromancy may possess:

* **Alternate Dream Universe:** the ability to create and manipulate an alternate universe within the user's dreams. User can create, shape and manipulate an alternate universe within their dreams. This makes them the almighty being of said universe and, thus, they can bend it to their will. It takes a lot of energy to use properly, and the user can become trapped within the alternate universe, even after death.
* **Dream Attacks:** the power to release / use dreams to various attacks.
* **Dream Creation:** the user can create anything they want via their dreams. If they dream of a massive amount of cash, when they awake, cash will be around them. Any organism and object in the dream will appear in the real world. User may not have any control over what they dream about. Any nightmare they have will also come to existence. They can't create anything that they haven't dreamed about.
* **Dream Destruction:** the power to destroy dreams. The user can destroy dreams or the dreamworld, making people dreaming dreamless, affecting their minds in a negative way, and destroying dream entities. If the users' dreams are becoming reality, this power may have an effect on reality as well. This may be irreversible, and may have negative effects on the mind of the dreamer, such as trauma.
* **Dream Imprisonment:** the power to trap people inside of dreams. User can create a false reality/illusion in dreams and trap people into either the users or the targets dreams/nightmares. The target's body may stay in waking while their mind/soul is trapped or it may disappear into dream as well. Users of powers that deal with the mind, souls or dreams/nightmares are both either highly resistant, immune, or able to leave their prison and release others as well. This would mean that Emmy, Stevie, and Ella are all resistant to this power.
* **Dream Inducement:** the power to induce dreams. The user can induce all kinds of dreams, including good dreams, bad dreams (nightmares), lucid dreams, daydreams, etc., into others or themselves. The user may be limited to specific types of dreams.
* **Dream Interaction:** the ability to supernaturally interact with dreams. The user can physically interact with dreams, allowing a number of effects. Note that this ability doesn't make dreams physical, it just allows the user to interact with them as if they were physical.
* **Dream Negation:** the power to suppress/negate dreams. The user can suppress/negate the dreams of oneself or others, making it an ideal defense against users of Dream Manipulation. May only be able to negate certain kinds of dreams.
* **Dream Observation:** the power to observe other people's dreams. User can observe/view the dreams of other people, seeing what others are dreaming, whether it is pleasant or not, and sometimes precinct the future based on these dreams. Some people may not be affected by this power. This is one of Liam's favorite things to do at night.
* **Dream Replication:** the power to copy the dreams of others. The user can copy and store the dreams of others, immediately gaining access to those dreams. This could be used to learn more about the other dreamer, provided the dream tells anything about the dreamer. This may require physical touch. The user may be unable to replicate dreams that are blocked or erased.
* **Dream Sharing:** the power to share dreams with or among others. User can share their own dreams with others or cause others to share the same dream, allowing those people to interact with each other or the user while they are dreaming. Also called mutual dreaming or dream distribution.
* **Dream Walking:** the ability to enter the dreams of another person. The user is capable of entering the dreams of others. Some users may be able to enter daydreams. This power can only be used when the subject is asleep, and both the user and target have to be asleep at the same time. Being inside the dreams of someone when they wake up may have a number of unpleasant consequences. Users may not be able to interfere with the target's dreams. The user's body is also vulnerable at this time. The user may also be vulnerable to lucid dreamers.
* **Dream Communication:** the power to communicate through dreams. User can communicate with other beings through their dreams, allowing them to communicate with others who may be incapable of physical speech or communicate if unable to physically speak. This power can only be used when the subject is asleep or unconscious.
* **Duration Manipulation of Dreams:** the ability to manipulate duration of dreams. The user can manipulate the time of dreams, making them longer or shorter.
* **Fear Manipulation:** the ability to manipulate fear. User can sense and manipulate the dread, fear, horror and terror, of themselves, people, animals and other creatures, whether by increasing, decreasing, causing or otherwise channeling fear, even manifesting the emotional energy to physical level. They can cause others to fear even the most harmless of things to the point of becoming catatonic.
* **Illusion Manipulation:** the power to manipulate illusions. Users can create, shape and manipulate illusions/hallucinations, causing targets to see, hear, touch, smell, and/or taste things which do not actually exist or cause them to perceive things differently from what they truly are. Some users can create complex and detailed worlds, while others may be able to only alter the way they or the target are perceived. As such, illusions can either exist solely within the physical or mental perceptions of usually organic and sentient targets, thereby or as external projections occupying material space, like holograms and mirages. Additionally, these illusions can even be powerful and realistic enough to become tangible and physically interact with the target and their environment or, in extreme cases, affect reality itself. **Variations include:**
	+ **Absolute Illusion:** cast permanent illusions on an enormous scale. The user is able to generate illusions that are realistic to the point where they can confuse all the senses of the target, making it impossible to break free unless willed by the user. They can also create illusions on a large scale, from a small region to planetary or galactic region, etc.
	+ **Empathic Illusion Casting:** create illusions via Empathy. User can create illusions based on emotions/empathy, either by the users own emotions or others.
	+ **Illusion-Based Mind Control:** control the minds of others via Illusion-casting. The user can control the minds of others through casting illusions directly into the victims mind. By casting illusions upon others, the user is able to control them in a way. If the user could use their power on a mass scale, they could control everyone via illusions. Though it’s quite rare to have empathy. If the user possesses both telepathic and empathic abilities, they could still be able to control the minds of others through illusion casting.
	+ **Illusion Embodiment:** embody or personify illusions. The user becomes the embodiment or personification of illusions, granting them absolute control over all illusions.
	+ **Illusion Energy Manipulation:** manipulate illusion energy. The user can create, shape and manipulate the illusion energy, the energy associated with sensory distortions.
	+ **Illusionary Magic:** employ illusions with the use of magic. The user can perform the most common tricks or the most powerful illusionary spells. They can perform vanishing acts, pull dozens of scarfs out of their mouths, or even create conjuring spells from various bizarre spells. Liam and Toby have this power.
	+ **Illusory Power Replication:** replicate powers and abilities via illusions. User can create either convincingly realistic faux copies of another individuals abilities which simulate both the natural effects as well as the proper response that accompanies them, confusing the recipient that their power is either being used against them or nullified. As well as erect totally solidified illusions that have actual physical effects upon the material world that which copy every little aspect of said assimilation right down to it's appearance, effect and desired results; all while still remaining a perfectly simulated fabrication. Liam and Toby have this power.
	+ **Mental Illusion:** create and manipulate hallucinations and delusions. The user can create, shape and manipulate hallucinations/delusions. These mental illusions can be used as distractions, cause the target to go insane from the wild sensation or even cause the target’s mind to collapse permanently. Liam and Toby have this power.
	+ **Psychosomatic Illusion:** create illusions that are so realistic and powerful they can cause physical effects on the target. The user can create illusions powerful enough to cause physical effects (cuts, bruises, burns, etc) to appear on the target. Such illusions can even realistic enough to physically interact with and effect the surrounding environment as well as their target. Liam and Toby have this power.
	+ **Selective Illusions:** induce illusions onto specific targets without affecting others. The user can induce illusions onto specific targets without affecting the masses or any other unwanted people. Liam and Toby have this power.
	+ **Self Perception:** alter one's own perception of reality. User can alter their own perception of reality, allowing them to experience anything they want independently from the context. They may even create alternate realities within their mind, leading any life they wish and entering/leaving/switching them at will. Users may also use this perceptive manipulation to enhance their real life, soothing the bad experiences and magnifying the good ones, radically improving their quality of life. Liam and Toby have this power.
	+ **Telepathic Illusion Casting:** create illusions via Telepathy. The user can create illusions based on thoughts/telepathy, either by the user's own thoughts or others.
	+ **True Illusion:** the power to manipulate illusions and turn them into reality. The user can create shape manipulate illusions so powerful they outweigh reality. They can induce illusions they can think off into others things and themselves, and freely shift the phenomenon from illusion to reality and back at any moment. They can change people, places, locations, rooms, events, etc, bring anything forth out of nowhere, make anything vanish without a trace, etc. The user alter reality anytime they want in anyway they want without a limit through illusions.
* **Mental Inducement:** the ability to push the target's mind/brain into a desired state. User is able to cause the target's mind/brain to convert into a desired state, causing short-term change in emotions, sensations, memories, etc. The exact length of the effect depends on both the user's skill and power and the target's mental state, as they're not directly manipulating them but putting the target into a condition of self perspective.
* **Oneiric Cognition:** the ability to discern and instantly understand the dreams of others. The user can discern and instantly understand the dreams of other beings. They are able to truly understand the deeper meaning behind the dreams of others and discern the anxieties behind nightmares as well. This allows them to copy the abilities of other beings. Ineffective against those without the ability to dream.
* **Oneiric Energy Manipulation:** the power to manipulate dream energy. The user can create, shape and manipulate dream energy, which can be described as a esoteric energy that flows within the world of dreams. Distance, mass, precision, etc. depend upon of the knowledge, skill, and strength of the user.
* **Oneiric Prediction:** the power to predict the dreams of others. User can determine and/or predict what someone will dream of at night including but not limited to the possible content of the dream, whether the dream will be pleasant or a nightmare and even how long one will stay in the dream. Unlike Oneiric Cognition, they may not understand the full meaning behind the dream or why they have any particular dream.
* **Oneiric Reality Manipulation:** the power to warp reality via dreams. Users dreams have a direct impact on reality. They may subtly influence it by changing the course of events, manifest into the real world or even emerge into existence as new beings, objects or phenomena, possibly with a will of their own. Troubles are to be expected as most users having limited grasp over their dreams, though they become increasingly more in control with experience until they reach the state of lucid dreaming, allowing them to have complete control of reality.
* **Oneiric Slaying:** the power to kill via via dreams and nightmares. The user can kill targets in their own or the victim's dreams with the ending resulting in the target's death in reality as well. User can be pulled into the physical plane, making them powerless. The victim may wake up, forcing the user away. If the target is able to lucid dream, they can defend themselves effectively against the user.
* **Psychic Energy Absorption:** the power to absorb psychic energy and utilize it in some way. The user can absorb the psychic energy, while removing it from the source, into their body and use it in various ways, gaining some form of advantage, either by enhancing themselves, gaining the drained power, using it as power source etc., either temporarily or permanently.
* **Dream Absorption:** the power to absorb dreams. The user can absorb/eat/steal dreams/nightmares of others, either storing them into some form, using them for various reasons (food, inspiration, power, etc.) or sharing/passing them on. The effects of having one's dreams stolen vary greatly. Victims of dream theft may become unable to sleep properly, lose their creativity or even go completely insane. In some cases, there may not be any side effects at all, particularly if the dream is merely being shared or copied rather than completely removed.
* **Pushing:** the ability to implant memories, thoughts, and emotions. User can implant memories, thoughts, and emotions into the minds of others in order to manipulate them. They are able to make a person do anything they desire. Does not work on mindless beings (corpses, animated objects, robots, etc.) May not be able to remove implanted memories, thoughts, and emotions.
* **Subconscious Manipulation:** the ability to manipulate the subconscious. The user can manipulate everything hidden inside their or others subconscious, including ideas, wishes or desires, traumatic memories, painful emotions, etc. This allows them manipulate the hidden aspects of the mind in various ways, for example arrange memories as one desires, awaken secrets and information hidden deep in the subconscious, and give shape to emotions or thoughts hidden inside the mind. If the user is powerful enough they can erase what resides in the subconscious (like their capacity to choose right from wrong) and leave only what they deem "important" making them very strong or very dangerous. Another rare use is the capability to manipulate dreams, able to even create very vivid nightmares. While inside the minds of others, the user is vulnerable to attacks, both in the real world and in the subconscious minds of others. May become overpowered by other users with the same ability, especially by strong telepaths.
* **Subliminal Messaging:** the power to send subliminal messages. User can implant thoughts or ideas into the subject's subconscious making the subject think that those were their own thoughts. User can keep on giving commands to the subject until they obey them. User may need to speak the commands to make it work.
* **Telepathic Dream Creation:** the power to have dreams based on the thoughts of others. The user can receive all the thoughts of others while the user sleeps, so the thoughts can manifest themselves as the user's dreams. For example: if a person had ever thought something about the user, the user will have a dream in which the person speaks what he or she thought of user. Unlike Dream Walking, the user simply has to stay in their own dreams to communicate with others and see what they are thinking of.
* **Dream Combat:** the ability to combine dream powers with physical combat. The user can combine dream powers with physical combat skill, allowing them to fight while dreaming or wield oneiric abilities in battle such as dream energy control.
* **Sleep Manipulation:** the ability to control the sleep functions of oneself and others. The user can induce, manipulate, and enhance all aspects of sleep in themselves or in others, including dreams, daydreams and nightmares. They can manipulate sleep patterns, induce instantaneous sleep on biotic subjects, induce perpetual insomnia, remove the need to sleep or make someone dreadfully tired all the time. The user can cause a subject to sleep forever in a comatose-like state and can even determine how deep a sleep is or how long a person or people have been sleeping. They can also force anyone sleeping to wake up regardless of the circumstances.
* **Nightmare Manipulation:** the ability to enter and manipulate nightmares. The user can create, shape, enter and manipulate the nightmares of oneself and others, including modifying, suppressing, fabricating, influencing, manifesting, sensing, observing nightmares and turning dreams into nightmares. The overwhelming shock, fear, anxiety and terror can prove too suffocating for the victim in which their hearts might explode or brains might die. In some cases, the user's power extends to the real world, such as wounds inflicted on a sleeping victim and even pulling someone from the waking world into the dream world.
* **Dream Materialization:** the ability to materialize dreams into reality. Users can materialize/manifest dreams of themselves or others into reality. Unlike Dream Creation they don't need to be asleep or dreaming, as they can do it while wide awake as they can pull either past dreams or dreams they had the night before out of the other persons mind into reality.
* **Dream Recall:** the power to make people recall any/all dreams they have had. User can make anyone/anything perfectly recall/remember every dream they have ever had, including nightmares. Allowing user to overload a targets mind by forcing them to remember every dream they have ever had in perfect detail causing the brains memory capacity to reach its limit and short out, and even cause breakdown or render them catatonic by forcing them to remember all their nightmares.
* **Dream Reliving:** the power to re-live/re-experience the dreams of others. User can relive/re-experience the past dreams of others, allowing them to literally relive the dreams as if they happened to them instead of the target. This allows them see what they had dreamed in the past, possibly gaining information from those dreams if any.
* **Dream Searching:** the power to search and find the dreams of others. User can search through and find the dreams of anyone/everyone including past, present and/or future dreams and even ones that have been lost or forgotten, allowing them to either bring them to the surface for the target to recall or absorb, duplicate, empower, etc. the dreams.
* **Oneiric Empowerment:** the power to gain strength from dreams. Users become stronger, faster, more durable, etc. from dreams, possibly unlocking abilities related to the affinity and enhancing the existing powers. Some users may be able draw sustenance from the dreams or even slow or stop aging.
* **Oneiric Omniscience:** the power to know what everyone dreams about or has dreamed about. User is aware of the dreams of anyone who has dreamed and/or are dreaming. This allows them to gain deep insight into knowledge the dreams may possess, discern the deepest desires of others and understand secrets that are kept consciously hidden. These secrets can vary from the fondest of dreams to the worst of nightmares. Users may risk descending into insanity by obtaining constant knowledge of the nightmares of others.
* **Oneiric Omnipresence:** the ability to be in every dream at once. User is present in every dream at the same time, referring to an unbounded or universal Dream Walking presence.
* **Dream Scrying:** the ability to dream about far off events that are currently happening. The user has the power to dream about something that is happening elsewhere in present time.
* **Dream Weaponry:** the power to wield or create weapons with oneirokinetic powers. User can to create or wield weaponry with power over dreams which grants the user a wide variety of dream-based abilities, with different abilities depending upon the adhesive used. This ability is not only specific to mystic weapons, but also technologically advanced weapons. The power of the weapons depends on what they were created for or what level of dream-based ability they possess.