Difference between revisions of "Half spell damage"

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'''Half spell damage''' is an [[extrinsic]] property which halves any [[damage]] taken from spells, as well as halving certain other effects. This property is currently conferred only by carrying [[The Orb of Detection]], [[The Platinum Yendorian Express Card]], [[The Orb of Fate]] or [[The Eye of the Aethiopica]].
+
'''Half spell damage''' is an [[extrinsic]] [[property]] that occurs in ''[[NetHack]]'', and halves any [[damage]] taken from spells while reducing the impact of certain other spell effects.
−
==Mechanics==
 
−
===Affected Spells===
 
  
−
The following monster spells are affected by half spell damage:<ref>http://runc1ble.org/nethack/monster_spells.html</ref>
+
This property is conferred by carrying [[the Orb of Detection]], [[the Platinum Yendorian Express Card]], [[the Orb of Fate]] or [[the Eye of the Aethiopica]]. Carrying more than one of these objects does not further affect spell damage.
  
−
{|class="prettytable"
+
==Description==
 +
Half spell damage reduces any damage inflicted from spells by 50%.
 +
{{todo|Also appears to affect damage from wands zapped by monsters? (see {{function|zap.c|zhitu|x}})}}
 +
 
 +
===Affected monster spells===
 +
{{main|Monster spells}}
 +
 
 +
The following monster spells are affected by half spell damage:
 +
 
 +
{|class="prettytable striped sortable"
 +
!Spell
 +
!Spell type
 +
!Min. level
 +
!Effect
 +
|-
 
|[[Psi bolt]]
 
|[[Psi bolt]]
−
|Halves damage.
+
|Magical
 +
|1
 +
|Halves damage.{{refsrc|mcastu.c|264|comment=Half spell damage initially applies to all spells; this matters for spells which don't do their own damage calculations|name=initial half damage}} Stacks with magic resistance to quarter damage.{{refsrc|mcastu.c|456}}
 
|-
 
|-
−
|[[Stun]]
+
|[[Stun (monster spell)|Stun]]
−
|Halves duration. However, this is trivial with a unicorn horn.
+
|Magical
 +
|4
 +
|Halves duration.{{refsrc|mcastu.c|434}} However, this is trivial with a unicorn horn.
 
|-
 
|-
 
|[[Drain strength]]
 
|[[Drain strength]]
−
|Halves reduction. However, magic resistance negates.
+
|Magical
 +
|7
 +
|Halves reduction.{{refsrc|mcastu.c|408}} However, magic resistance negates.{{refsrc|mcastu.c|402}}
 
|-
 
|-
 
|[[Curse items]]
 
|[[Curse items]]
−
|Halves maximum number of items affected from 6 to 3; stacks with magic resistance, combined to only 2.
+
|Magical
 +
|11
 +
|Halves number of items affected from 1d6 to 1d3.{{refsrc|sit.c|337|name=curse items}} Stacks with magic resistance, to only 1d2.<ref name='curse items'/>
 
|-
 
|-
 
|[[Open wounds]]
 
|[[Open wounds]]
−
|Halves damage. Stacks with magic resistance to quarter damage.
+
|Clerical
 +
|1
 +
|Halves damage.<ref name='initial half damage'/> Stacks with magic resistance to quarter damage.{{refsrc|mcastu.c|641}}
 +
|-
 +
|[[Confuse (monster spell)|Confuse]]
 +
|Clerical
 +
|3
 +
|Halves duration.{{refsrc|mcastu.c|621}} However, this is trivial with a unicorn horn.
 
|-
 
|-
−
|[[Confusion]]
+
|[[Paralyze (monster spell)|Paralyze]]
−
|Halves duration. However, this is trivial with a unicorn horn.
+
|Clerical
 +
|5
 +
|Halves duration.{{refsrc|mcastu.c|608}} However, magic resistance or free action reduces to 1 turn instead.{{refsrc|mcastu.c|599}}
 
|-
 
|-
−
|[[Paralyze]]
+
|[[Blind (monster spell)|Blind]]
−
|Halves duration.
+
|Clerical
 +
|6
 +
|Halves duration.{{refsrc|mcastu.c|592}} However, this is trivial with a unicorn horn or [[the Eyes of the Overworld]].
 
|-
 
|-
−
|[[Blind]]
+
|[[Lightning (monster spell)|Lightning]]
−
|Halves duration. However, this is trivial with a unicorn horn or the Eyes of the Overworld.
+
|Clerical
 +
|12
 +
|Halves damage.{{refsrc|mcastu.c|525}} However, shock resistance negates.{{refsrc|mcastu.c|518}}
 
|-
 
|-
−
|[[Lightning]]
+
|[[Fire pillar]]
−
|Halves damage. However, shock resistance negates.
+
|Clerical
 +
|13
 +
|Halves damage.{{refsrc|mcastu.c|504}} However, fire resistance negates.{{refsrc|mcastu.c|499}}
 
|-
 
|-
−
|[[Pillar of fire]]
+
|[[Asmodeus#Magical cold attack|Cold]]
−
|Halves damage. However, fire resistance negates.
+
|[[Asmodeus]] only
 +
|
 +
|Halves damage.<ref name='initial half damage'/> However, cold resistance negates.{{refsrc|mcastu.c|281}}
 
|-
 
|-
−
|[[Cold]]
+
|Psychic blast
−
|Halves damage. However, cold resistance negates.
+
|[[Mind flayer]], master mind flayer
 +
|
 +
|Halves damage.{{refsrc|monmove.c|427}}
 
|}
 
|}
  
−
=== Monsters Affected ===
+
If the player has all [[resistance]]s (including [[magic resistance]]) and a [[noncursed]] [[unicorn horn]], the only spells usefully affected by half spell damage are [[psi bolt]], [[open wounds]], [[curse items]], and [[mind flayer]]s' psychic blasts.
−
The following monsters can cast spells, some of which affected by this property:
+
 
−
<!-- Todo: 1.) Make it a sortable table, like some of the other pages. 2.) Format it better. 3.) Add a column, which sortable, would list the things that magic resistance/reflection doesn't already negate such that all the actual, real uses of this would permeate to the top. -->
+
==== Monsters affected ====
−
{|class="prettytable"
+
The following monsters can cast spells, some of which are affected by half spell damage as detailed above:
 +
{|class="prettytable striped sortable"
 
! style="text-align: left"| Monster
 
! style="text-align: left"| Monster
−
! style="text-align: left"| Base Level
+
! style="text-align: left"| Base level
−
! Spells
+
! Spell type
 
! Notes
 
! Notes
 
|-
 
|-
−
|[[Kobold Shaman]]
+
|{{monsymlink|kobold shaman}}
 
|2
 
|2
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Orc Shaman]]
+
|{{monsymlink|orc shaman}}
 
| 3
 
| 3
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Gnomish Wizard]]
+
|{{monsymlink|gnomish wizard}}
 
| 3
 
| 3
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Barrow wight]]
+
|{{monsymlink|barrow wight}}
 
| 3
 
| 3
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Guide]]
+
|{{monsymlink|guide}}
 
| 5
 
| 5
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Abbot]]
+
|{{monsymlink|abbot}}
 
|5
 
|5
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[Acolyte]]
+
|{{monsymlink|acolyte}}
 
|5
 
|5
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[Apprentice]]
+
|{{monsymlink|apprentice}}
 
| 5
 
| 5
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Golden Naga]]
+
|{{monsymlink|mind flayer}}
 +
| 9
 +
| Psychic blast
 +
|
 +
|-
 +
|{{monsymlink|golden naga}}
 
| 10
 
| 10
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Nalfeshnee]]
+
|{{monsymlink|nalfeshnee}}
 
| 11
 
| 11
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Lich]]
+
|{{monsymlink|lich}}
 
| 11
 
| 11
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Aligned priest]]
+
|{{monsymlink|aligned priest}}
 
|12
 
|12
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[Demilich]]
+
|{{monsymlink|master mind flayer}}
 +
|13
 +
|Psychic blast
 +
|
 +
|-
 +
|{{monsymlink|demilich}}
 
| 14
 
| 14
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Dark One]]
+
|{{monsymlink|Dark One}}
 
| 15
 
| 15
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Ixoth]]
+
|{{monsymlink|Ixoth}}
 
| 15
 
| 15
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Minion of Huhetotl]]
+
|{{monsymlink|Minion of Huhetotl}}
 
| 16
 
| 16
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Thoth Amon]]
+
|{{monsymlink|Thoth Amon}}
 
| 16
 
| 16
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Chromatic Dragon]]
+
|{{monsymlink|Chromatic Dragon}}
 
| 16
 
| 16
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Nalzok]]
+
|{{monsymlink|Nalzok}}
 
| 16
 
| 16
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Ki-rin]]
+
|{{monsymlink|ki-rin}}
 
| 16
 
| 16
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Titan]]
+
|{{monsymlink|titan}}
 
| 16
 
| 16
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Master Lich]]
+
|{{monsymlink|master lich}}
 
| 17
 
| 17
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Archon]]
+
|{{monsymlink|Archon}}
 
|19
 
|19
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Neferet the Green]]
+
|{{monsymlink|Neferet the Green}}
 
|20
 
|20
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Arch-lich]]
+
|{{monsymlink|arch-lich}}
 
|25
 
|25
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Grand Master]]
+
|{{monsymlink|Grand Master}}
 
|25
 
|25
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[High priest]]
+
|{{monsymlink|high priest}}
 
|25
 
|25
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[Arch priest]]
+
|{{monsymlink|Arch Priest}}
 
|25
 
|25
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[Master Kaen]]
+
|{{monsymlink|Master Kaen}}
 
|25
 
|25
 
|Clerical
 
|Clerical
 
|
 
|
 
|-
 
|-
−
|[[Wizard of Yendor]]
+
|{{monsymlink|Wizard of Yendor}}
 
|30
 
|30
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Orcus]]
+
|{{monsymlink|Orcus}}
 
|30
 
|30
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Dispater]]
+
|{{monsymlink|Dispater}}
 
|36
 
|36
 
| Magical
 
| Magical
 
|
 
|
 
|-
 
|-
−
|[[Demogorgon]]
+
|{{monsymlink|Asmodeus}}
 +
|49
 +
|
 +
| Has a unique magical cold attack.
 +
|-
 +
|{{monsymlink|Demogorgon}}
 
|50
 
|50
 
| Magical
 
| Magical
Line 215: Line 270:
 
|}
 
|}
  
−
<!-- I've ascended about eight times, and from personal experience, you don't need this very much... This could be expanded on in a strategy section. -->
+
===Exceptions===
−
<!-- Could turn this into a vinn diagram table... -->
+
The following sources of damage, though they may be considered spells, are not affected by half spell damage:
−
 
+
*The [[magic missile]] attack from [[angel]]s, [[Yeenoghu]], [[gray dragon]]s and the [[Chromatic Dragon]].
−
: ''Main article: [[Monster spells]].''
+
*The [[Oracle]]'s [[passive]] magic missile attack.{{refsrc|uhitm.c|2228}}
−
 
+
*The [[geyser]] monster spell, which is considered physical damage.{{refsrc|mcastu.c|495}}
−
'''Clerical''' spells include [[open wounds]], [[cure self]], [[confusion]], [[paralyze]], [[blind]], [[summon insects]], [[curse items]], [[lightning]], [[pillar of fire]], and [[geyser]].
+
*Any spells cast or wands zapped by the player.{{refsrc|zap.c|3185}}{{refsrc|zap.c|3265}}
  
−
'''Magical''' spells includes psi bolt, cure self, haste self, stun, disappear, drain strength, destroy armor, curse items, aggravate, summon nasties, clone, and touch of death.
+
==Variants==
 +
===SLASH'EM===
 +
In [[SLASH'EM]], the [[Yeoman]] quest artifact, the [[Crown of Saint Edward]], also confers half spell damage.
  
−
It is unclear whether or not this is a complete list.
+
==See also==
 +
*[[Half physical damage]]
  
−
== References ==
+
==References==
 
<references/>
 
<references/>
  
 
{{stub}}
 
{{stub}}
 +
{{nethack-366}}

Latest revision as of 16:04, 9 March 2024

Half spell damage is an extrinsic property that occurs in NetHack, and halves any damage taken from spells while reducing the impact of certain other spell effects.

This property is conferred by carrying the Orb of Detection, the Platinum Yendorian Express Card, the Orb of Fate or the Eye of the Aethiopica. Carrying more than one of these objects does not further affect spell damage.

Description

Half spell damage reduces any damage inflicted from spells by 50%.

A user has suggested improving this page or section as follows:

"Also appears to affect damage from wands zapped by monsters? (see zhitu)"

Affected monster spells

Main article: Monster spells

The following monster spells are affected by half spell damage:

Spell Spell type Min. level Effect
Psi bolt Magical 1 Halves damage.[1] Stacks with magic resistance to quarter damage.[2]
Stun Magical 4 Halves duration.[3] However, this is trivial with a unicorn horn.
Drain strength Magical 7 Halves reduction.[4] However, magic resistance negates.[5]
Curse items Magical 11 Halves number of items affected from 1d6 to 1d3.[6] Stacks with magic resistance, to only 1d2.[6]
Open wounds Clerical 1 Halves damage.[1] Stacks with magic resistance to quarter damage.[7]
Confuse Clerical 3 Halves duration.[8] However, this is trivial with a unicorn horn.
Paralyze Clerical 5 Halves duration.[9] However, magic resistance or free action reduces to 1 turn instead.[10]
Blind Clerical 6 Halves duration.[11] However, this is trivial with a unicorn horn or the Eyes of the Overworld.
Lightning Clerical 12 Halves damage.[12] However, shock resistance negates.[13]
Fire pillar Clerical 13 Halves damage.[14] However, fire resistance negates.[15]
Cold Asmodeus only Halves damage.[1] However, cold resistance negates.[16]
Psychic blast Mind flayer, master mind flayer Halves damage.[17]

If the player has all resistances (including magic resistance) and a noncursed unicorn horn, the only spells usefully affected by half spell damage are psi bolt, open wounds, curse items, and mind flayers' psychic blasts.

Monsters affected

The following monsters can cast spells, some of which are affected by half spell damage as detailed above:

Monster Base level Spell type Notes
k kobold shaman 2 Magical
o orc shaman 3 Magical
G gnomish wizard 3 Magical
W barrow wight 3 Magical
@ guide 5 Magical
@ abbot 5 Clerical
@ acolyte 5 Clerical
@ apprentice 5 Magical
h mind flayer 9 Psychic blast
N golden naga 10 Magical
& nalfeshnee 11 Magical
L lich 11 Magical
@ aligned priest 12 Clerical
h master mind flayer 13 Psychic blast
L demilich 14 Magical
@ Dark One 15 Magical
D Ixoth 15 Magical
& Minion of Huhetotl 16 Magical
@ Thoth Amon 16 Magical
D Chromatic Dragon 16 Magical
& Nalzok 16 Magical
A ki-rin 16 Magical
H titan 16 Magical
L master lich 17 Magical
A Archon 19 Magical
@ Neferet the Green 20 Magical
L arch-lich 25 Magical
@ Grand Master 25 Clerical
@ high priest 25 Clerical
@ Arch Priest 25 Clerical
@ Master Kaen 25 Clerical
@ Wizard of Yendor 30 Magical
& Orcus 30 Magical
& Dispater 36 Magical
& Asmodeus 49 Has a unique magical cold attack.
& Demogorgon 50 Magical

Exceptions

The following sources of damage, though they may be considered spells, are not affected by half spell damage:

Variants

SLASH'EM

In SLASH'EM, the Yeoman quest artifact, the Crown of Saint Edward, also confers half spell damage.

See also

References

  1. ↑ 1.0 1.1 1.2 mcastu.c in NetHack 3.4.3, line 264: Half spell damage initially applies to all spells; this matters for spells which don't do their own damage calculations
  2. ↑ mcastu.c in NetHack 3.4.3, line 456
  3. ↑ mcastu.c in NetHack 3.4.3, line 434
  4. ↑ mcastu.c in NetHack 3.4.3, line 408
  5. ↑ mcastu.c in NetHack 3.4.3, line 402
  6. ↑ 6.0 6.1 sit.c in NetHack 3.4.3, line 337
  7. ↑ mcastu.c in NetHack 3.4.3, line 641
  8. ↑ mcastu.c in NetHack 3.4.3, line 621
  9. ↑ mcastu.c in NetHack 3.4.3, line 608
  10. ↑ mcastu.c in NetHack 3.4.3, line 599
  11. ↑ mcastu.c in NetHack 3.4.3, line 592
  12. ↑ mcastu.c in NetHack 3.4.3, line 525
  13. ↑ mcastu.c in NetHack 3.4.3, line 518
  14. ↑ mcastu.c in NetHack 3.4.3, line 504
  15. ↑ mcastu.c in NetHack 3.4.3, line 499
  16. ↑ mcastu.c in NetHack 3.4.3, line 281
  17. ↑ monmove.c in NetHack 3.4.3, line 427
  18. ↑ uhitm.c in NetHack 3.4.3, line 2228
  19. ↑ mcastu.c in NetHack 3.4.3, line 495
  20. ↑ zap.c in NetHack 3.4.3, line 3185
  21. ↑ zap.c in NetHack 3.4.3, line 3265
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