Spellbook of clairvoyance - Revision history

Umbire the Phantom: touch-ups

2025-10-24T07:54:57Z

touch-ups

Umbire the Phantom: /* Description */ fix

2025-10-24T07:52:11Z

‎Description: fix

Umbire the Phantom: touch-up

2025-10-24T07:43:19Z

touch-up

Umbire the Phantom: /* Strategy */ copyedi

2025-08-23T12:52:53Z

‎Strategy: copyedi

Umbire the Phantom: /* Description */ detail

2025-08-23T12:48:56Z

‎Description: detail

Umbire the Phantom: /* Description */ reorg

2025-08-23T12:48:19Z

‎Description: reorg

Umbire the Phantom: follow-up

2025-08-23T12:47:40Z

follow-up

YakumoRising: /* Strategy */ pothole

2025-08-23T00:44:55Z

‎Strategy: pothole

YakumoRising: /* Strategy */ demon lairs are mappable

2025-08-23T00:44:38Z

‎Strategy: demon lairs are mappable

Umbire the Phantom: this too

2025-07-09T07:25:21Z

this too

@@ Line 7: / Line 7: @@
   |direction=non-directional
   |abundance=1.5%
-  |role=samurai
+  |role=Samurai
 }}
 In ''[[NetHack]]'', the '''spellbook of clairvoyance''' can be [[read]] to learn the '''spell of clairvoyance'''. It is a level 3 [[divination spell]], and the [[spellbook]] takes 8 actions to read. It is the [[special spell]] for [[Samurai]].{{refsrc|src/spell.c|82|nethack=3.6.7}}{{refsrc|src/role.c|458|nethack=3.6.7}}
@@ Line 27: / Line 27: @@
 * If the spell is cast at Skilled or above, or is cast at any level while the hero already has clairvoyance from another source, monsters and objects within the mapped area will be shown as if the hero has seen them up close.{{refsrc|src/spell.c|1188|nethack=3.6.7}}{{refsrc|src/detect.c|1316-L1319|nethack=3.6.7}}
-In both cases, the spell of clairvoyance maps once per cast and does not add to the duration of any existing clairvoyance property (e.g., bought from an [[aligned priest]]), and does not detect buried objects unlike standard [[object detection]].{{refsrc|src/detect.c|1363-L1365|nethack=3.6.7}} If the hero casts the spell while [[wearing]] a [[cornuthaum]] as any [[role]] other than a [[Wizard]], the helm will block the spell.{{refsrc|src/spell.c|1187|nethack=3.6.7}}{{refsrc|src/spell.c|1192|nethack=3.6.7|name="blockedspell"}}
+In both cases, the spell of clairvoyance maps once per cast and does not add to the duration of any existing clairvoyance property (e.g., bought from an [[aligned priest]]), and does not detect buried objects unlike standard [[object detection]] does.{{refsrc|src/detect.c|1363-L1365|nethack=3.6.7}} If the hero casts the spell while [[wearing]] a [[cornuthaum]] as any [[role]] other than a [[Wizard]], the helm will block the spell.{{refsrc|src/spell.c|1187|nethack=3.6.7}}{{refsrc|src/spell.c|1192|nethack=3.6.7|name="blockedspell"}}
-If the hero casts the spell and detects at least one hidden monster and/or hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an [[object detection]]-style map for the mapped area.{{refsrc|src/detect.c|1325|nethack=3.6.7}}{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
+If the hero casts the spell and detects at least one hidden monster and/or hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will mark the locations of those monsters and items against a black map as object detection does.{{refsrc|src/detect.c|1325|nethack=3.6.7}}{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
 ==Strategy==

@@ Line 29: / Line 29: @@
 In both cases, the spell of clairvoyance maps once per cast and does not add to the duration of any existing clairvoyance property (e.g., bought from an [[aligned priest]]), and does not detect buried objects unlike standard [[object detection]].{{refsrc|src/detect.c|1363-L1365|nethack=3.6.7}} If the hero casts the spell while [[wearing]] a [[cornuthaum]] as any [[role]] other than a [[Wizard]], the helm will block the spell.{{refsrc|src/spell.c|1187|nethack=3.6.7}}{{refsrc|src/spell.c|1192|nethack=3.6.7|name="blockedspell"}}
-If the hero casts the spell and detects at least one hidden monster and/or hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an [[object detection]]-style map for the mapped area.{{{refsrc|src/detect.c|1325|nethack=3.6.7}}{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
+If the hero casts the spell and detects at least one hidden monster and/or hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an [[object detection]]-style map for the mapped area.{{refsrc|src/detect.c|1325|nethack=3.6.7}}{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
 ==Strategy==

@@ Line 29: / Line 29: @@
 In both cases, the spell of clairvoyance maps once per cast and does not add to the duration of any existing clairvoyance property (e.g., bought from an [[aligned priest]]), and does not detect buried objects unlike standard [[object detection]].{{refsrc|src/detect.c|1363-L1365|nethack=3.6.7}} If the hero casts the spell while [[wearing]] a [[cornuthaum]] as any [[role]] other than a [[Wizard]], the helm will block the spell.{{refsrc|src/spell.c|1187|nethack=3.6.7}}{{refsrc|src/spell.c|1192|nethack=3.6.7|name="blockedspell"}}
-If the hero casts the spell and detects at least hidden monster and/or a hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an object detection-style map for the mapped area.{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
+If the hero casts the spell and detects at least one hidden monster and/or hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an [[object detection]]-style map for the mapped area.{{{refsrc|src/detect.c|1325|nethack=3.6.7}}{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
 ==Strategy==
-The spell of clairvoyance is a decent form of mapping the hero's surroundings, and compared to the {{+ of|magic mapping}} spell it is generally more accessible for heroes that are only at Basic in divination spells (often from being capped at that skill level). Samurai in particular are capable of casting the spell consistently without a worn [[robe]] due to the special spell bonus&mdash;considering the role's base spellcasting penalty, it may be the only such spell that most of them will have access to. The spell of clairvoyance is also not blocked on [[non-mappable level]]s unlike magic mapping spells or scrolls, though this is a dubious advantage use since most non-mappable levels have largely static layouts, with [[The Catacombs]] being the only exception.
+The spell of clairvoyance is a decent form of mapping the hero's surroundings, and compared to the {{+ of|magic mapping}} spell it is generally more accessible for heroes that are only at Basic in divination spells (often from being capped at that skill level). Samurai in particular are capable of casting the spell consistently without a worn [[robe]] due to the special spell bonus&mdash;considering the role's base spellcasting penalty, it may be the only such spell that most of them will have access to. The spell of clairvoyance is also not blocked on [[non-mappable level]]s unlike magic mapping spells or scrolls, though this is a dubious advantage use since most non-mappable levels have largely static layouts that can be memorized, with [[The Catacombs]] being the only exception.
 ==History==
-The spellbook of clairvoyance and its spell first appear in [[NetHack 3.0.0]].
+The spellbook of clairvoyance and its spell first appear in [[NetHack 3.0.0]]. From this version to [[NetHack 3.6.0]], including some variants based on these versions, the spell of clairvoyance only maps a 19-by-11 area centered on the hero with no other effects. The spell is updated in [[NetHack 3.6.1]] to additionally display monsters if cast at Skilled or higher, and is further updated in [[NetHack 3.6.2]] to its current functionality.
 ==Messages==
@@ Line 52: / Line 50: @@
 In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], [[drow Healer]]s start the game with a blessed spellbook of clairvoyance.
-When cast at Skilled or higher, the spell of divination can be targeted at any square on the current level, rather than being restricted to centering on the hero&mdash;this cannot be done on non-mappable levels, in which case the spell simply functions as it does in NetHack 3.4.3.
+When cast at Skilled or higher, the spell of divination can be targeted at any square on the current level to map around that square, rather than being restricted to centering on the hero&mdash;this cannot be done on non-mappable levels, in which case the spell simply functions as it does in NetHack 3.4.3.
 ===xNetHack===

@@ Line 32: / Line 32: @@
 ==Strategy==
-The spell of clairvoyance is a decent form of mapping the hero's surroundings, and compared to the {{+ of|magic mapping}} spell it is generally more accessible for heroes that are only at Basic in divination spells (often from being capped at that skill level)&mdash;Samurai in particular are capable of casting the spell consistently without a worn [[robe]], and due to the special spell bonus it may be the only such spell that most of them will have access to. The spell of clairvoyance is also not blocked on [[non-mappable level]]s unlike magic mapping spells or scrolls, though this is a dubious advantage use since most non-mappable levels have largely static layouts, with [[The Catacombs]] being the only exception.
+The spell of clairvoyance is a decent form of mapping the hero's surroundings, and compared to the {{+ of|magic mapping}} spell it is generally more accessible for heroes that are only at Basic in divination spells (often from being capped at that skill level). Samurai in particular are capable of casting the spell consistently without a worn [[robe]] due to the special spell bonus&mdash;considering the role's base spellcasting penalty, it may be the only such spell that most of them will have access to. The spell of clairvoyance is also not blocked on [[non-mappable level]]s unlike magic mapping spells or scrolls, though this is a dubious advantage use since most non-mappable levels have largely static layouts, with [[The Catacombs]] being the only exception.
 ==History==

@@ Line 29: / Line 29: @@
 In both cases, the spell of clairvoyance maps once per cast and does not add to the duration of any existing clairvoyance property (e.g., bought from an [[aligned priest]]), and does not detect buried objects unlike standard [[object detection]].{{refsrc|src/detect.c|1363-L1365|nethack=3.6.7}} If the hero casts the spell while [[wearing]] a [[cornuthaum]] as any [[role]] other than a [[Wizard]], the helm will block the spell.{{refsrc|src/spell.c|1187|nethack=3.6.7}}{{refsrc|src/spell.c|1192|nethack=3.6.7|name="blockedspell"}}
-If the hero casts the spell and detects a hidden monster or object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an object detection-style map for the mapped area.{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
+If the hero casts the spell and detects at least hidden monster and/or a hidden object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an object detection-style map for the mapped area.{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}}
 ==Strategy==

@@ Line 18: / Line 18: @@
 Writing a spellbook of clairvoyance with a [[magic marker]] uses up 15 to 29 charges.
-{{upcoming|NetHack 3.7.0|Per {{commit|d42efcd}}, the [[spellbook of invisibility]] generated in a [[chest]] generated within a random closet on the middle level of [[Vlad's Tower]] may be randomly replaced with a spellbook of create familiar.}}
+{{upcoming|NetHack 3.7.0|Per {{commit|d42efcd}}, the [[spellbook of invisibility]] generated in a [[chest]] generated within a random closet on the middle level of [[Vlad's Tower]] may be randomly replaced with a spellbook of clairvoyance.}}
 ==Description==
 {{main|Clairvoyance}}
-When successfully [[cast]], the spell grants [[clairvoyance]] and magically maps a roughly-circular 19-by-11 area centered on the [[hero]]'s location, with additional details dependent on the hero's [[skill]] in divination spells:{{refsrc|src/spell.c|1186|nethack=3.6.7}}{{refsrc|src/detect.c|1306|nethack=3.6.7}}{{refsrc|src/detect.c|1320|nethack=3.6.7}} if the spell is cast at Basic skill or lower, the spell marks the location of monsters in the mapped area with an {{white|I}} glyph, and objects detected within the area are described by their types ("a scroll", "a wand", etc.);{{refsrc|src/spell.c|1190|nethack=3.6.7}} if the spell is cast at Skilled or above, or is cast at any level while the hero already has clairvoyance from another source, monsters and objects within the mapped area will be shown as if the hero has seen them up close.{{refsrc|src/spell.c|1188|nethack=3.6.7}}{{refsrc|src/detect.c|1316-L1319|nethack=3.6.7}} In both cases, the spell of clairvoyance maps once per cast and does not add to the duration of any existing clairvoyance property (e.g., bought from an [[aligned priest]]), and does not detect buried objects unlike standard [[object detection]].{{refsrc|src/detect.c|1363-L1365|nethack=3.6.7}}
+When successfully [[cast]], the spell grants [[clairvoyance]] and magically maps a roughly-circular 19-by-11 area centered on the [[hero]]'s location, with additional details dependent on the hero's [[skill]] in divination spells:{{refsrc|src/spell.c|1186|nethack=3.6.7}}{{refsrc|src/detect.c|1306|nethack=3.6.7}}{{refsrc|src/detect.c|1320|nethack=3.6.7}}
 If the hero casts the spell and detects a hidden monster or object that is not buried (e.g. the item is submerged in a [[moat]] or pool), the spell will produce an object detection-style map for the mapped area.{{refsrc|src/detect.c|1396|nethack=3.6.7}} If the hero casts the spell while [[engulfed]], the engulfer will be shown on the resulting map.{{refsrc|src/detect.c|1350|nethack=3.6.7}} If the hero casts the spell while [[wearing]] a [[cornuthaum]] as any [[role]] other than a [[Wizard]], the helm will block the spell.{{refsrc|src/spell.c|1187|nethack=3.6.7}}{{refsrc|src/spell.c|1192|nethack=3.6.7|name="blockedspell"}}