Figured I would make a genjutsu library for funsies. Only canon genjutsu, if you want to contribute, please.

Name: Mist Servant Technique (霞従者の術 ~ Kasumi Jūsha no Jutsu)
Canon/Custom: Canon
Rank: D
Type: Supplementary
Element: N/A
Range: Within 25 meters.
Specialty: Genjutsu
Duration: 4 posts
Cooldown: Duration * 1.5
Description: The user must either make physical contact with the target or get struck by an attack of any kind from the target in order to activate this genjutsu. The victim will perceive the user dividing into a few clones, unable to identify which one is the original. Every time they attack one of the clones, the clones will divide further, gradually doubling and then quadrupling their numbers until the victim is surrounded and overwhelmed. The clones' moves and attacks are equivalent to those of a genin with E-Rank stats, and they throw illusory kunai as well. They are capable of making the victims feel the pain of light cuts and bruises, but nothing further. Sensory jutsu and doujutsu of D-Rank and lower are rendered useless in determining which clone is the user, as the illusion makes all the clones perfectly identical to the user in every way.

Code:

[b]Name:[/b] Mist Servant Technique (霞従者の術 ~ Kasumi Jūsha no Jutsu)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] D
[b]Type:[/b] Supplementary
[b]Element:[/b] N/A
[b]Range:[/b] Within 25 meters.
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] 4 posts
[b]Cooldown:[/b] Duration * 1.5
[b]Description:[/b] The user must either make physical contact with the target or get struck by an attack of any kind from the target in order to activate this genjutsu. The victim will perceive the user dividing into a few clones, unable to identify which one is the original. Every time they attack one of the clones, the clones will divide further, gradually doubling and then quadrupling their numbers until the victim is surrounded and overwhelmed. The clones' moves and attacks are equivalent to those of a genin with E-Rank stats, and they throw illusory kunai as well. They are capable of making the victims feel the pain of light cuts and bruises, but nothing further. Sensory jutsu and doujutsu of D-Rank and lower are rendered useless in determining which clone is the user, as the illusion makes all the clones perfectly identical to the user in every way.

Name: Hazy Genjutsu (曇り幻術 ~ Kumori Genjutsu)
Canon/Custom: Canon
Rank: D
Type: Offensive
Element: N/A
Range: 4 meter radius
Specialty: Genjutsu
Duration: 2 posts
Cooldown: 4 posts
Description: The user creates an aura around themselves using their chakra; anyone who enters this aura is subjected to this illusion. Victims' eyesight will start to deteriorate, resulting in blurred vision and difficulty identifying jutsu, items, and people since they will only perceive basic shapes and colors. Moving helps counteract this, allowing them lapses of clear vision as the illusion restructures itself to adjust to their new surroundings, but the illusion also gives the sensation of being in quicksand, effectively slowing them (-1 tier of speed). Once the illusion is placed in someone's mind, moving outside of the aura will not free them, and they will have to use genjutsu kai or wait out the two post duration in order to escape.

Code:

[b]Name:[/b] Hazy Genjutsu (曇り幻術 ~ Kumori Genjutsu)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] D
[b]Type:[/b] Offensive
[b]Element:[/b] N/A
[b]Range:[/b] 4 meter radius
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] 2 posts
[b]Cooldown:[/b] 4 posts
[b]Description:[/b] The user creates an aura around themselves using their chakra; anyone who enters this aura is subjected to this illusion. Victims' eyesight will start to deteriorate, resulting in blurred vision and difficulty identifying jutsu, items, and people since they will only perceive basic shapes and colors. Moving helps counteract this, allowing them lapses of clear vision as the illusion restructures itself to adjust to their new surroundings, but the illusion also gives the sensation of being in quicksand, effectively slowing them (-1 tier of speed). Once the illusion is placed in someone's mind, moving outside of the aura will [i]not[/i] free them, and they will have to use genjutsu kai or wait out the two post duration in order to escape.

Name: Demonic Illusion: Hell Viewing Technique (魔幻・奈落見の術 ~ Magen: Narakumi no Jutsu)
Canon/Custom: Canon
Rank: D
Type: Supplementary
Element: N/A
Range: 20 meters max
Specialty: Genjutsu
Duration: 3 posts
Cooldown: 6 posts
Description: In order to place someone within this genjutsu, the user must have had their chakra make contact with the intended victim(s) within the last post. This can be done either by successfully landing a jutsu on them or making physical contact with them (doing so with a clone would suffice). The user then makes the Snake and Rat hand seals and activates their chakra within the victim's mind to initiate the illusion, so long as the victim is within 20 meters. The victim will imagine a circle of leaves envelop them for a moment, and when it passes, they will be presented with a horror personal to them, crafted from their darkest nightmares. This is an excellent jutsu to distract and frighten opponents. Characters with the Strong-Willed special characteristic are immune to this genjutsu.

Code:

[b]Name:[/b] Demonic Illusion: Hell Viewing Technique (魔幻・奈落見の術 ~ Magen: Narakumi no Jutsu)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] D
[b]Type:[/b] Supplementary
[b]Element:[/b] N/A
[b]Range:[/b] 20 meters max
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] 3 posts
[b]Cooldown:[/b] 6 posts
[b]Description:[/b] In order to place someone within this genjutsu, the user must have had their chakra make contact with the intended victim(s) within the last post. This can be done either by successfully landing a jutsu on them or making physical contact with them (doing so with a clone would suffice). The user then makes the Snake and Rat hand seals and activates their chakra within the victim's mind to initiate the illusion, so long as the victim is within 20 meters. The victim will imagine a circle of leaves envelop them for a moment, and when it passes, they will be presented with a horror personal to them, crafted from their darkest nightmares. This is an excellent jutsu to distract and frighten opponents. Characters with the Strong-Willed special characteristic are immune to this genjutsu.

Name: Demonic Illusion: Descending Hell Technique (魔幻・地獄降下の術 ~ Magen: Jigoku Kōka no Jutsu)
Canon/Custom: Canon
Rank: C
Type: Offensive
Element: N/A
Range: 6 meter radius
Specialty: Genjutsu
Duration: 1 post
Cooldown: 3 posts
Description: The user imbues an object or weapon of their choice, such as a kunai, with chakra and then chooses a target area. They then throw the chosen item to said area, and activate the illusion. Anyone within a 6 meter radius of the item's destination will be put into the genjutsu, and they will find a massive fireball falling from the sky just above them, near enough to feel its scorching heat. This will force them to retreat at least 15 meters away to avoid the fireball engulfing them in flames, or try to dissipate the flames using a Suiton jutsu, if they are able to. The illusion is extremely realistic and thus genjutsu kai cannot be used except by those with the Ace Eye special characteristic, or by others who also have a genjutsu specialization of C-Rank or higher.

Code:

[b]Name:[/b] Demonic Illusion: Descending Hell Technique (魔幻・地獄降下の術 ~ Magen: Jigoku Kōka no Jutsu)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] C
[b]Type:[/b] Offensive
[b]Element:[/b] N/A
[b]Range:[/b] 6 meter radius
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] 1 post
[b]Cooldown:[/b] 3 posts
[b]Description:[/b] The user imbues an object or weapon of their choice, such as a kunai, with chakra and then chooses a target area. They then throw the chosen item to said area, and activate the illusion. Anyone within a 6 meter radius of the item's destination will be put into the genjutsu, and they will find a massive fireball falling from the sky just above them, near enough to feel its scorching heat. This will force them to retreat at least 15 meters away to avoid the fireball engulfing them in flames, or try to dissipate the flames using a Suiton jutsu, if they are able to. The illusion is extremely realistic and thus genjutsu kai cannot be used except by those with the Ace Eye special characteristic, or by others who also have a genjutsu specialization of C-Rank or higher.

Name: Bell Ring Genjutsu (鐘鳴る幻術 ~ Kane Nare Genjutsu)
Canon/Custom: Canon
Rank: C
Type: Supplementary
Element: N/A
Range: 10 meters
Specialty: Genjutsu
Duration: Lasts until genjutsu kai is used.
Cooldown: 5 posts
Description: Requires a bell of some kind. The user rings the bell and uses the vibration to carry their chakra to a victim's ears. It disrupts their senses momentarily and causes them to hallucinate, making them see multiple images of the user and lowering their reaction time by one tier. These effects grow more potent the longer the victim hears the bell ringing; for every three posts the victim remains in this genjutsu, the reaction time debuff increases by one tier, up to a maximum of -3 tiers at 10 posts. This illusion can be stopped by taking the bell from the user or destroying it, and deaf people are immune to the vibration and thus the genjutsu as a whole.

Code:

[b]Name:[/b] Bell Ring Genjutsu (鐘鳴る幻術 ~ Kane Nare Genjutsu)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] C
[b]Type:[/b] Supplementary
[b]Element:[/b] N/A
[b]Range:[/b] 10 meters
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] Lasts until genjutsu kai is used.
[b]Cooldown:[/b] 5 posts
[b]Description:[/b] Requires a bell of some kind. The user rings the bell and uses the vibration to carry their chakra to a victim's ears. It disrupts their senses momentarily and causes them to hallucinate, making them see multiple images of the user and lowering their reaction time by one tier. These effects grow more potent the longer the victim hears the bell ringing; for every three posts the victim remains in this genjutsu, the reaction time debuff increases by one tier, up to a maximum of -3 tiers at 10 posts. This illusion can be stopped by taking the bell from the user or destroying it, and deaf people are immune to the vibration and thus the genjutsu as a whole.

Name: Offsetting Sound (相殺の音 ~ Sōsai no Ne)
Canon/Custom: Canon
Rank: B
Type: Supplementary
Element: N/A
Range: 15 meter radius
Specialty: Genjutsu
Duration: Instant
Cooldown: 6 posts
Description: The user creates a chakra-imbued, startling sound, such as a snap, a whistle, or a tune with an instrument. Though it seems to be a mere unpleasant noise to the untrained ear, it is an expert technique that is capable of dismantling genjutsu by accessing people's brains and bringing them back to their senses. Everyone within 15 meters of the user, potentially including the user themselves, is freed from any genjutsu of B-Rank or lower that they are stuck in.

Code:

[b]Name:[/b] Offsetting Sound (相殺の音 ~ Sōsai no Ne)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] B
[b]Type:[/b] Supplementary
[b]Element:[/b] N/A
[b]Range:[/b] 15 meter radius
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] Instant
[b]Cooldown:[/b] 6 posts
[b]Description:[/b] The user creates a chakra-imbued, startling sound, such as a snap, a whistle, or a tune with an instrument. Though it seems to be a mere unpleasant noise to the untrained ear, it is an expert technique that is capable of dismantling genjutsu by accessing people's brains and bringing them back to their senses. Everyone within 15 meters of the user, potentially including the user themselves, is freed from any genjutsu of B-Rank or lower that they are stuck in.

Name: Genjutsu Binding (幻術縛り ~ Genjutsu Shibari)
Canon/Custom: Canon
Rank: B
Type: Supplementary
Element: N/A
Range: 20 meters away in a straight line, up to two targets.
Specialty: Genjutsu
Duration: 1 post
Cooldown: 5 posts
Description: The user spreads chakra underneath themselves, moving it toward their intended target(s). This is a small enough amount of chakra that it is undetectable by sensory jutsu of B-Rank or lower. Once it reaches the target, the user may activate the genjutsu, preventing the target from voluntarily interacting with the rest of their body for one full post, thus leaving them completely paralyzed aside from basic bodily functions such as breathing. Genjutsu kai may still be used as normal, however victims will have lingering motor skill loss for two posts after freeing themselves (-1 tier of speed).

Code:

[b]Name:[/b] Genjutsu Binding (幻術縛り ~ Genjutsu Shibari)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] B
[b]Type:[/b] Supplementary
[b]Element:[/b] N/A
[b]Range:[/b] 20 meters away in a straight line, up to two targets.
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] 1 post
[b]Cooldown:[/b] 5 posts
[b]Description:[/b] The user spreads chakra underneath themselves, moving it toward their intended target(s). This is a small enough amount of chakra that it is undetectable by sensory jutsu of B-Rank or lower. Once it reaches the target, the user may activate the genjutsu, preventing the target from voluntarily interacting with the rest of their body for one full post, thus leaving them completely paralyzed aside from basic bodily functions such as breathing. Genjutsu kai may still be used as normal, however victims will have lingering motor skill loss for two posts after freeing themselves (-1 tier of speed).

Name: Illusionary Mist (錯覚の霧 ~ Sakkaku no Kiri)
Canon/Custom: Canon
Rank: A
Type: Supplementary
Element: N/A
Range: 30 meter radius
Specialty: Genjutsu
Duration: Maintainable (-10 chakra per post)
Cooldown: Duration * 1.5
Description: A powerful genjutsu first used by the Three-Tails of legend. The user creates a large dome of chakra; it has a 30 meter radius, with the user at the center, and it moves with them. To outsiders, it is only detectable by sensory jutsu of S-Rank and higher, and it has no visible or audible components. Those who enter the dome are immediately forced into an intense genjutsu that distorts their vision, preventing them from seeing anything outside of the dome and causing them to see vivid hallucinations of their past, be them good or bad. While under this illusion, victims suffer a -2 to reaction time and will have little to no will to fight, instead being completely enthralled by their hallucinations. Genjutsu kai cannot be used to escape this genjutsu, and the only way to free oneself is to leave the illusion's range.

Code:

[b]Name:[/b] Illusionary Mist (錯覚の霧 ~ Sakkaku no Kiri)
[b]Canon/Custom:[/b] Canon
[b]Rank:[/b] A
[b]Type:[/b] Supplementary
[b]Element:[/b] N/A
[b]Range:[/b] 30 meter radius
[b]Specialty:[/b] Genjutsu
[b]Duration:[/b] Maintainable (-10 chakra per post)
[b]Cooldown:[/b] Duration * 1.5
[b]Description:[/b] A powerful genjutsu first used by the Three-Tails of legend. The user creates a large dome of chakra; it has a 30 meter radius, with the user at the center, and it moves with them. To outsiders, it is only detectable by sensory jutsu of S-Rank and higher, and it has no visible or audible components. Those who enter the dome are immediately forced into an intense genjutsu that distorts their vision, preventing them from seeing anything outside of the dome and causing them to see vivid hallucinations of their past, be them good or bad. While under this illusion, victims suffer a -2 to reaction time and will have little to no will to fight, instead being completely enthralled by their hallucinations. Genjutsu kai cannot be used to escape this genjutsu, and the only way to free oneself is to leave the illusion's range.