View source for Insight

'''Insight''' is a feature specific to [[dNetHack]]. It represents the player's ability to see "beyond the veil": Players with a high insight will encounter creatures they would otherwise never see.

== The Veil ==

The 'veil' refers to a perception of reality that is permanently altered by the following actions:

* Reading the [[DNetHack artifacts#The Necronomicon|Necronomicon]] or the [[DNetHack artifacts#The Book of Lost Names|Book of Lost Names]].
* Successfully binding any [[spirit]].
* Entering the [[Lost Cities]].
* Playing as an [[Anachrononaut]], [[Binder]] or [[Madman]].
* Discovering the presence of [[The Black Mother]] and sacrificing to her.
* Drinking a potion of goat's milk.
* Turning traitor in the shared Hedrow Quest.
* Receiving a telepathic message from an [[elder brain]] (possible in the [[Drow Noble Quest]]).
* Being told terrible truths by an [[Apocalypse angel]].

While the 'veil' is intact, the PC has a +10 bonus to [[sanity]] regeneration. Once the 'veil' has been pierced, insight can be accrued and reduced.

==Methods of changing insight ==
{| class="wikitable" width="80%"
!Change
!Method
|-
| rowspan=6 | +1
| Successfully reading the Necronomicon
|-
| Successfully reading the Book of Lost Names
|-
| Gaining telepathy from a corpse while hallucinating
|-
| Drinking a cursed potion of enlightenment
|-
| Drinking a cursed potion of see invisible (1 in insight chance)
|-
| Seeing an insight-granting monster up close for the first time
|-
| +X
| Killing an insight-granting monster for the first time. X is the monster's difficulty/10 - 1.
|-
| -1
| Drinking a cursed potion of hallucination
|-
| -X% insight
| Amnesia (X is typically 10)
|}

== Insight creatures ==
There are a number of creatures that the character will be unable to perceive until they have accrued sufficient Insight. While a creature is unseen, the character will be unable to harm it in any way. However, many of these monsters will still be able to affect the character while unseen.
{| class="wikitable" width="80%"
! Creature
! Insight to see creature
! Effects while unseen
|-
| Bright walker
| 10
| 
|-
| Lurking One
| 20 - 40
| 
|-
| Blasphemous Lurker
| 40
| 
|-
| Blessed
| 40
| Hostile Blessed will periodically spawn monsters while unseen.
|-
| Mouth of the Goat
| 60
| Mouth will consume any corpses in its space. The character can use the mouth's space to interact with [[the Black Mother]].
|-
| The Good Neighbor
| 40
| The Good Neighbor will wander around the level, spawning monsters and aiding witches. If she shares the character's square she will drain the character's luck.
|-
| Hmnyw Pharaoh
| 40
| The Pharaoh will interact with Nitocris and spawn monsters.
|-
| Polypoid being
| 40
| The being will pick up any [[Mask (dNetHack)|masks]] on its square and put them on, becoming visible in the process.
|-
| Parasitized Doll
| 1 - 20
| 
|-
| Living Doll
| 1 - 20
| 
|-
| Kuker
| 20 - 40
| 
|}

== Insight templates ==

{| class="wikitable" width="80%"
! Template
! Insight to encounter
! Notes
|-
| Dark daughter
| 10 - 20
| The creature's head is replaced with a mass of writing tentacles, granting it extra tentacle attacks at the cost of any head-dependent attacks.
|-
| Pseudonatural
| 1+
| 
|-
| Tomb herd
| 1+
| 
|-
| Yithian
| 1+
| 
|-
| Cranium rat
| 1+
| 
|}

==Insight merchants ==
In the Gulf of N'Kai on the [[Neutral Quest (dNetHack)|Neutral Quest]], you can encounter a number of peaceful merchants. If you [[chat]] to them while wielding an artifact in your main hand, they will offer to take it from you, giving you a "thought" in return.<ref>https://github.com/Chris-plus-alphanumericgibberish/dnethack/blob/master/dnethack-3.4.3/src/sounds.c|2716</ref> Giving away a gifted artifact will anger the god that gave it to you.

Thoughts may also be obtained directly via glyphs. Glyphs may be wished for, found in bones files left by characters with thoughts, or, in the case of beast's embrace glyphs, left as treasure by monsters. Characters must still meet the minimum insight requirement in order to read the glyph.

[[Madmen]] can receive a free thought from their [[secret whisperer]] once it has become a veil-render due to them gaining 20 insight, but only once. You can receive the guidance thought for free if you read the lit [[dNetHack artifacts#The Holy Moonlight Sword|Holy Moonlight Sword]] with at least 40 insight (even while blind).

You may have up to three thoughts in your head at once. Madmen who have completed [[Madman quest|their quest]] and either have at least 20 insight, or have already received a thought from their veil-render, can have four thoughts in their head instead.

Thoughts cannot be involuntarily removed, but are only active when you have sufficiently high insight (equal to the lowest possible value that could be required to see the corresponding merchant). Thoughts can be voluntarily removed with a trephination kit, the aid of a nurse, or the aid of a veil-render. Removing a thought results in a glyph, which can be read to return the thought to your head, as long as the character meets the minimum insight requirement.

{| class="wikitable" width="100%"
! Merchant
! Symbol
! Insight to See Merchant
! Related Glyph
! Thought's Effect
|-
| Bestial dervish
| {{red|X}}
| 20 - 29
| clockwise metamorphosis glyph
| +30% maxhp
|-
| Ethereal dervish
| {{brightgreen|X}}
| 20 - 29
| anti-clockwise metamorphosis glyph
| +3 speed (+25% of normal speed), applied after all other speed bonuses
|-
| Sparkling lake
| {{brightcyan|P}}
| 18 - 26
| sparkling lake glyph
| intrinsic magic resistance
|-
| Flashing lake
| {{yellow|P}}
| 16 - 23
| fading lake glyph
| intrinsic shock resistance
|-
| Smouldering lake
| {{orange|P}}
| 11 - 16
| smoking lake glyph
| intrinsic fire resistance
|-
| Frosted lake
| {{cyan|P}}
| 12 - 17
| frosted lake glyph
| intrinsic cold resistance
|-
| Blood shower
| {{red|v}}
| 14 - 20
| rapturous eye glyph
| heal 30 hp on sneak attacks
|-
| Many taloned thing
| {{gray|U}}
| 16 - 23
| clawmark glyph
| +30% total damage of sneak attacks
|-
| Deep blue cube
| {{blue|b}}
| 10 - 14
| clear sea glyph
| intrinsic poison resistance
|-
| Pitch black cube
| {{black|b}}
| 22 - 32
| deep sea glyph
| +3 DR to all slots
|-
| Perfectly clear cube
| {{brightblue|b}}
| 30 - 40
| hidden sea glyph
| +30 to sanity regeneration (sanity will regenerate to 100% in most cases)
|-
| Prayerful thing
| {{white|U}}
| 25 - 37
| communion glyph
| +25% carrying capacity
|-
| Hemorrhagic thing
| {{red|U}}
| 15 - 23
| corruption glyph
| Fast healing (+1 HP per turn) when injured below 30% hp.
|-
| Many eyed seeker
| {{blue|e}}
| 17 - 25
| eye glyph
| 2x death drop frequency
|-
| Voice in the dark
| (blank)
| 19 - 28
| formless voice glyph
| +30% max power
|-
| Tiny being of light
| {{brightcyan|y}}
| 13 - 19
| guidance glyph
| heal when attacking those that hurt you
|-
| Man faced millipede
| {{white|s}}
| 5 - 7
| impurity glyph
| +3 DR to all slots for all pets
|-
| Mirrored moonflower
| {{gray|{}}
| 10 - 14
| moon glyph
| +30% XP gain
|-
| Crimson writher
| {{red|w}}
| 14 - 20
| writhe glyph
| sneak attacks restore 30 energy
|-
| Radiant pyramid
| {{yellow|p}}
| 12 - 17
| radiance glyph
| +30% healing from any healing effect
|-
| None - the glyph is carried by {{frac|4}} of [[werewolves]] in the [[Depths]]
| N/A
| No insight requirement
| beast's embrace glyph
| While wielding a [[bestial claw]] in your main hand, you can [[sneak attack]] with it, and you can [[two-weapon]] with an empty off-hand, in which case the off-hand attacks will be powerful claw attacks.
|-
| Grotesque peeper
| {{brightgreen|g}}
| 16 - 23
| orrery glyph
| +30% base attack bonus, plus an additional +1d20 to-hit vs. targets you can see.
|}

{{todo|Confirm all the current effects of the beast's embrace glyph. The text is getting too long for one line/row, so we should probably make the bestial claw page and put all the details on there.}}

==Living doll merchants==
Living dolls appear randomly in the Depths within the Neutral Quest. Before reaching their insight threshold, they appear as "lifeless dolls", an object that functions as a living doll corpse. Each doll has an independent threshold of rnd(20) insight. Their corpses can be transported to a more convenient location. After reaching their insight threshold, they will wake up and appear as peaceful {{brightmagenta|'}} that sell a variety of dolls when you #[[chat]] to them. <ref>https://github.com/Chris-plus-alphanumericgibberish/dnethack/blob/master/dnethack-3.4.3/src/sounds.c|2211</ref>

If a doll or an android given a doll tear is killed, it will drop its items on the ground and leave a lifeless doll corpse. This corpse will revive again, following the same rules as the first awakening.

Living dolls will always sell doll tears and 9 to 11 random other dolls from the below table. For the dolls that grant an effect for a certain number of turns, they will always add to a pre-existing timer. Each doll costs 800 zorkmids regardless of charisma; a doll tear costs 8000 zm.

{| class="wikitable"
! Doll
! Unidentified appearance
! Effect
|-
| Effigy
| Effigy
| When applied, acts as a blessed [[scroll of remove curse]] regardless of its own beatitude.
|-
| Doll of jumping
| Pole-vaulter doll
| When applied, lets you jump immediately and gives you the ability to jump intrinsically for 100 turns.
|-
| Doll of friendship
| Bard doll

| When applied, attempts to tame an adjacent monster in the given direction.
|-
| Doll of chastity
| Priest doll
| When applied, makes you intrinsically immune to seduction attacks for 100 turns. 
|- 
| Doll of cleaving
| Berserker doll
| When applied, grants intrinsic cleaving for 100 turns. While cleaving is active, weapon attacks also attack monsters to the left and right of the target.
|-
| Doll of satiation
| Chef Doll
| When applied, fills your stomach to full.
|-
| Doll of good health
| Healer Doll
| When applied, cures slime, petrification, sickness, and blindness with no failure chance. Will not cure confusion, hallucination, stunning, or any other status effect not listed.
|-
| Doll of full healing
| Nurse doll
| When applied, grants rapid healing for 5 turns. While rapid healing is active, heal 1/5 of max health per turn.
|-
| Doll of destruction
| Dancer doll
| When applied, grants destruction for 8 turns. While destruction is active, all adjacent monsters take 6d6 cold, fire, or shock damage per turn. Non-adjacent monsters in line of sight have a {{frac|4}} chance of taking 4d4 elemental damage).
|-
| Doll of memory
| Scholar doll
| When applied, fully restores the memory of a chosen known spell.
|-
| Doll of binding
| Heretic doll
| When applied, refreshes the binding timeout of a chosen bound spirit.
|-
| Doll of preservation 
| Umbrella Doll
| When applied, grants intrinsic preservation for 1000 turns. While preservation is active, your inventory is immune to being damaged.
|-
| Doll of quick-drawing
| Archaeologist doll
| When applied, grants quickdraw for 100 turns. While quickdraw is active, wand zaps are a free action (like stethoscope usage).
|-
| Doll of wand-charging
| Wandsman doll
| When applied, fully refreshes a single chosen wand. The recharge count is set to 0, and the charges are set to 8 for direction and 15 for non-directional wands.
|-
| Doll of stealing
| Thief doll
| When applied, steal all items, even cursed or equipped ones, from the inventory of an adjacent target monster.
|-
| Doll of mollification
| High priest doll
| When applied, mollifies your god fully, setting anger to 0. Also sets luck to 0 if it was below 0.
|-
| Doll of clear-thinking
| Madman doll
| When applied, grants clear thinking for 100 turns. While clear thinking is active, passive madnesses are suppressed and active madness effects will never trigger.
|-
| Doll of mind-blasting
| Squid-parasitized doll
| When applied, grants mind-blasting for 8 turns. While mind-blasting is active, you emanate 3d15 psychic blasts that can hit all monsters on the level. Most monsters have a {{frac|10}} chance of being affected, and mindless monsters are immune; telepathic monsters have a {{frac|2|3}} chance of being affected, or always if they are currently blinded. The monster's study count is set to the damage taken if it is greater than its current study.
|-
| Doll tear
| milky gemstone
| Can be applied to turn an android into a doll. This android will sell all the same dolls that the living doll used to, and they will revive just like living dolls. Purchasing this returns the living doll to a lifeless doll, but one that will never revive. Androids, gynoids, operators, and commanders can be given doll abilities like this, in addition to a lifeless doll to bring the living doll back. 
|}
[[Category:DNethack]]

== Kuker ==
[[Kuker]] are peaceful angelic creatures that spawn in the Neutral Quest once your insight is high enough. They offer several services in exchange for exorbitant amounts of money. They also grudge on any undead creatures on the level they are found on, and are often not strong enough to fight too many of them. So come prepared to buy anything you want, and don't dally when going to reach them.

{| class="wikitable" width="60%"
! Service
! Cost
! Effect
|-
| Drive out curses
| 7 gold
| Uncurses all cursed items in your open inventory, and unpunishes you.
|-
| Blessing of good fortune
| 70
| Fully maximizes your innate luck.
|-
| Bless wielded item
| 700
| Blesses your currently wielded weapon. If the weapon's enchantment is under 3, it will be set to 3. You must be wielding a weapon. 
|-
| Lift sterility curse
| 7000
| Makes you fertile again. You must be sterile.
|-
| Sanctify your weapon
| 70000
| Blesses your current weapon. If the weapon's enchantment is under 3, it will be set to 3. Adds the [[Object properties#Weapons|holy property]], removing the consecrated property in the process. You must be wielding a weapon.
|}

==Insight weapons==
Insight weapons are unusual weapons that gain additional to-hit and damage dice when used by Madmen or any role with [[Ose]] bound. Many insight weapons also gain additional effects once the PC passes certain insight thresholds; any PC can benefit from these effects. There are at least two thresholds for extra effects, with the exact amount and thresholds depending on the weapon, and the weapon's appearance will often have adjectives added to indicate which thresholds have been passed.

The Madman and Ose-binder bonus to-hit die's size is determined by the lower of the PC's Insight score and their level. Therefore, the maximum to-hit bonus is +1d30, for a PC of 30th level with at least 30 points of insight.

The Madman and Ose-binder bonus damage die's size is determined by halving the lower of the PC's Insight score and their level. When using a two-handed weapon, the PC's effective level is doubled. Therefore, for a one-handed weapon the maximum damage bonus is +1d15, for a PC of 30th level with at least 30 points of insight. For a two-handed weapon the maximum damage bonus is +1d30, for a PC of 30th level with at least 60 points of insight.

=== Insight weapon list ===

{| class="wikitable"
! Weapon
! Notes
|-
| Bestial Claw
| Grants an offhand claw attack that scales with Insanity. Only the Bestial Claw weapon benefits from insight. Wishable, and found in the inventories of werewolves in the Lost Cities.
|-
| Blade of Mercy/Grace/Pity
| Grants extra effects. Blades of Mercy are wishable and may be found randomly.
|-
| Bloodletter (artifact)
| Wishable artifact.
|-
| Diskos
| Grants extra effects. Diskos are wishable and may be found randomly.
|-
| Gith-silver sword
| Wishable only as an artifact long sword (The Silver Sky).
|-
| Elf-lord weapon
| Obtainable only by elf madmen, as a special elven broadsword in their quest and an additional elven broadsword or warsword and elven sickle in their endgame.
|-
| Holy Moonlight Sword (artifact)
| The PC must have pierced the veil in order to ignite the sword. Wishable artifact.
|-
| Isamusei
| Grants extra effects. Isamusei are wishable and may be found randomly.
|-
| Lash of the Cold Waste
| Wishable artifact.
|-
| Lurking-one arm (huge bone club)
| Grants extra effects. Not wishable, found in the inventories of Lurking Ones in the Lost Cities.
|-
| [[Mercurial]] (material)
| Wishable only as an artifact broadsword (The Sky Reflected).
|-
| [[Rakuyo]] (property)
| Grants extra effects. Typically found on rakuyo, yuki-onna madwomen can find a katana and wakizashi with this property in the quest. Rakuyos are wishable and are found in deep one village inclusions, unusual instances like the rakuyo-katana are not wishable.
|}

=== Insight weapon extra effects ===

{| class="wikitable"
! Weapon
! Insight
! Name
! Effect
|-
| rowspan=3 | '''Blade of Mercy/Grace/Pity'''
| 1-50
| Sparkling (later Sidereal)
| Gains +2% magic damage per point of insight in this range (capping out at +1x magic damage at 50 insight). This damage is resisted by player-type magic resistance, but not by monster-type magic resistance.
|-
| 25
| Sidereal (replaces "sparkling")
| Gains an additional +2% magic damage per two points of insight over 25, limited by your charisma score (and so capping out at +.5x at 75 insight and 25 charisma). Additionally [[discourage|discourages]] the target, inflicting 1 point of discouragement per 5 points of charisma. Discouragement from multiple hits stacks, capping out at your charisma score plus the blade's enchantment value.
|-
| 50
| Sticky
| Causes the target to attack a nearby enemy of the blade's wielder. The target gains a bonus to-hit and damage for this attack equal to 1 point per 5 points of charisma and insight. If a monster kills an ally, it may go insane. If the player kills a pet, their god may become angry as normal. Monsters receive a magic resistance roll to resist this effect, unless the blow from the blade dealt enough damage to kill them. The player is always affected.
|-
| rowspan=12 | '''Diskos'''
| 5-40
| Spinning
| ''As insight increases the diskos spins faster and faster, dealing increased physical damage as a result. A medium-sized diskos will do 4d6+6/4d8+8 physical damage at 40 insight.''
|-
| 5
| 
| +1/2 diesize flat physical damage
|-
| 10
| 
| +1 die physical damage
|-
| 25
| 
| +1/4 diesize flat physical damage (+3/4 total)
|-
| 30
| 
| +1 die physical damage (+2 dice total)
|-
| 35
| 
| +1/4 diesize flat physical damage (+1 total)
|-
| 40
| 
| +1 die physical damage (+3 dice total)
|-
| 15-50
| light/shadow/energy-wrapped
| ''As insight increases the diskos is wrapped in holy (or unholy) energy, dealing bonus damage as a result. Holy energy ("light wrapped diskos") deals 2x damage vs. holy-hating enemies. Unholy energy ("shadow-wrapped diskos") deals 2x damage vs. unholy-hating enemies. A medium-sized diskos will deal 2d6+6/2d8+8 energy damage at 50 insight.''
|-
| 15
| 
| +1/2 diesize flat energy damage
|-
| 20
| 
| +1 die energy damage
|-
| 45
| 
| +1/2 diesize flat energy damage (+1 diesize total)
|-
| 50
| 
| +1 die energy damage (+2 dice total)
|-
| rowspan=7 | '''Gith-silver sword''' (property)
| 0-10
| 
| +2d6 psychic damage to non-mindless targets
|-
| 10-20
| 
| +2d8 psychic damage to non-mindless targets
|-
| 20-30
| 
| +2d10 psychic damage to non-mindless targets
|-
| 30
| 
| +2d12 psychic damage to non-mindless targets
|-
| 1-25
| Rippling
| 1/20 chance of +1x (2x) damage
|-
| 25-50
| Flowing
| 1/10 chance of +2x (3x) damage
|-
| 50
| Rushing
| 1/5 chance of +3x (4x) damage
|-
| rowspan=5 | '''Elf-lord weapon''' (property)
| 0-10
| Luminous
| +1d8 holy (alignment record > 3), +1d8 unholy (alignment record < -3), or +1d4 neutral (alignment record between -3 and 3) damage. +1/2 stat bonus damage for intelligence, wisdom, and charisma (-2 to +4 each). All elf-lord weapons also have the wrathful [[object property]], though the property name is not shown.
|-
| 11
| Incandescent
| +weapon enchantment additional holy/unholy damage. This bonus is not applied to neutral damage unless the weapon is hitting an enemy that is vulnerable to neutral-holiness weapons.
|-
| 22
| 
| The weapon gains phasing, ignoring the target's equipped armor.
|-
| 33
| Radiant
| The weapon gains an additional die of holy/unholy/neutral damage. While your alignment record is greater than 3, the weapon turns gremlins and hunting horrors to dust, turns trolls to stone, and may cancel the target.
|-
| 56
| "chartreuse-flamed" when striking a valid target.
| Deals +2d8+enchantment bonus damage vs. [[faction|yellow-faction]] monsters. This will burn items in the target's inventory as if it was fire damage, but the bonus damage isn't resisted by fire resistance.
|-
| rowspan=11 | '''Isamusei'''
| 22
| Reflected
| The isamusei strikes behind the attacker.
|-
| 45
| Crossed
| The isamusei strikes to the left and right of the attacker as well as behind (resulting in a +-shaped or x-shaped pattern).
|-
| 57
| Tredecile
| The isamusei strikes to the left and right of the primary target (in a 45-degree arc) as well as behind and to the left and right of the attacker.
|-
| 70
| Circular
| The isamusei strikes in a full circle around the attacker.
|-
| 10-70
| ''The weapon's color changes.''
| ''Intense gravity deals percentage-based damage to creatures that fail a monster-resistance check. The extra damage is calculated '''before''' the damage from the weapon is applied.''
|-
| 10
| ''Yellow''
| The target's current HP is reduced by 5%.
|-
| 22
| ''Bright green''
| The target's current HP is reduced by 10%.
|-
| 33
| ''Bright cyan''
| The target's current HP is reduced by 12.5%.
|-
| 45
| ''Bright blue''
| The target's current HP is reduced by 16.6%.
|-
| 57
| ''Bright magenta''
| The target's current HP is reduced by 20%.
|-
| 70
| ''Yellow-magenta''
| The target's current HP is reduced by 25%.
|-
| rowspan=3 | '''Lash of the Cold Waste''' (artifact)
| 11-20
| 
| Grants an extra point of AC per point of insight over 10 when wielded, to a maximum of 10 AC at 20 insight.
|-
| 22-40
| 
| Grants an extra point of DR per two points of insight over 20 when wielded, to a maximum of 5 DR at 40 insight.
|-
| 1-30
| 
| Adds an extra die of damage. The die size is the lower of your insight and your level (so 1d30 max with 30+ insight at level 30).
|-
| rowspan=2 | '''Lurking-one arm''' (huge bone club)
| 15
| Severed arm
| The club temporarily turns into a clawed hand and hits an enemy behind the primary target. The clawed hand deals piercing/slashing damage, and has a larger base die (+6 faces/+3 faces). Starting at this stage, the weapon can be applied like a polearm. When used as a polearm, the clawed hand hits the target but no additional attacks are made.
|-
| 30
| Thrashing arm
| The clawed hand hits enemies to the right and left of the primary target (resulting in a Y-shaped pattern if swung diagonally and a T-shaped pattern if swung orthogonally).
|-
| rowspan=4 | '''Ibite arm''' (artifact)
| 15-30
| Severed/Thrashing arm
| ''The Ibite arm behaves like a lurking one arm. The hand deals blunt damage rather than piercing/slashing.''
|-
| 40
| 
| The arm begins attacking nearby monsters of its own accord. If wielded, it may choose to attack any enemy within 2 squares. If it is in the swap weapon slot, it may choose to attack any adjacent enemy.
|-
| 50
| 
| The arm begins casting spells of its own accord. Any enemy within 8 squares may be targeted. It chooses from Plague, Acid Rain, Geyser, Open Wounds, and Psi Bolt. During gibbous moons it can also cast Fire Pillar.
|-
| 60
| 
| The arm will summon an army of ibite ghosts when #invoked. Summons 6d6 beings of Ib and 3d3 priests of Ib at random locations across the level. Beings of Ib are a kind of ghost with a 6d6 acid touch, and Priests of Ib are similar but level 15 vs. level 10 and have clerical spellcasting instead. They are summoned for a duration scaling with charisma, enchantment, and your missing sanity.
|-
| rowspan=2 | '''Rakuyo''' (property)
| 20
| Blood-drenched
| The rakuyo also strikes one square behind the original target with a blade of rotted blood. The player can force-attack empty squares to trigger the effect.
|-
| 40
| Burning
| A flaming explosion also erupts one square behind the original target. The player can force-attack empty squares to trigger the effect.
|}

==References==
<references/>
{{variant-343}}