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''Not to be confused with the [[vulnerability (status effect)|vulnerability]] [[status effect]].''

'''Vulnerability''' is a specific weakness in the protections or defences surrounding someone or something. In ''Crawl'', monsters and players can be vulnerable to any of a number of elements, to varying degrees.

==Players==
Players can be vulnerable to [[fire]], [[cold]], [[poison]], [[electricity]], [[holy]], [[silver]], and [[dragon slaying]] effects. In most cases, being vulnerable to an element causes that element to do 150% damage to the player. Poison vulnerability causes poison to last twice as long as it ordinarily would. There is no difference in damage if you gain more levels of vulnerability, though more vulnerability needs more resistance to compensate.

Silver behaves differently than the others; the additional damage it causes scales with the number of [[mutation]]s you currently have instead of being determined by specific ranks of vulnerability. Being in a [[form]] will cause you to take +75% damage from silver.

Dragon Slaying is only found on the unrand [[Wyrmbane]], dealing +75% damage to all [[dragon]] and [[draconian]]-type monsters.

Sources of player vulnerability are, by element:
*Cold
**[[Rings of fire]] give one level per ring worn
**Being in [[Dragon Form]] gives one rank of cold vulnerability (except for non-red [[Draconian]]s)
**The Cold Vulnerability mutation
**[[Artefact]]s can occasionally have the property
*Fire
**[[Ring of ice|Rings of ice]] give one level per ring worn
**White draconians that cast Dragon Form gain one rank of fire vulnerability
**Being a [[mummy]]
**The Fire Vulnerability mutation
**Occasionally found on [[artefact]]s
*Poison
**[[Virulence]]
*Electricity
**Wrath from [[Qazlal]]
*Holy
**Being undead, whether naturally or through the [[talisman of death]]. The undead races can never be rid of this vulnerability, although thankfully, holy attacks are fairly rare before extended
**Being a [[demonspawn]]
*Silver
**Each mutation you possess increases damage from silver weapons by 5% (up to a maximum of 175%). Innate mutations do not count for this unless you are a [[demonspawn]]
**Being in any form causes you to take 175% damage
*Dragon slaying
**All [[draconian]]s are vulnerable to dragon slaying

==Monsters==
Monsters can be vulnerable to all of the same elements as players, save for electricity. Vulnerability works fairly similarly, except that it is only ever one level for monsters, and it causes them to take 200% damage from elemental melee damage. They can gain vulnerability through items just as players do, and many monsters start off with them.

As stated above, holy vulnerability does not specifically relate to weapons of holy wrath. Holy weapons only cause extra damage to monsters which are demonic or undead; many "evil" spellcasters also have holy vulnerability, but do not take extra damage from weapons of holy wrath. They will, however, take more damage from player-invoked [[cleansing flame]].

A non-exhaustive list of monsters vulnerable to the various elements is given below:

*Cold: Many "fiery" monsters are vulnerable to cold. This includes but is not limited to:
**[[Brimstone fiend]]s
**[[Balrug]]s
**[[Fire dragon]]s
**[[Crimson imp]]s
**[[Fire elemental]]s
*Fire: Many "icy" monsters are vulnerable to fire, along with a few others. Some examples are:
**[[Ice fiend]]s
**[[Blizzard demon]]s
**[[Simulacrum|Simulacra]]
**[[Azure jellies]]
**[[Mummy (monster)|Mummies]] - but note that the more dangerous types of mummies found in the [[Tomb]] are '''not''' vulnerable to fire.
*Poison: In general, poison-vulnerable monsters are insects, who absorb air through their skin instead of breathing it, making them more vulnerable to poison.
**[[Scorpion]]s - but note that [[emperor scorpion]]s are not vulnerable; in fact, they are poison-resistant
**[[Killer bee]]s
**[[Fire crab]]s
**[[Spriggan rider]]s - vulnerable since their [[hornet]] mounts are vulnerable
**Nearly every spider-type monster
*Holy: Evil monsters.
**All demonic monsters. In console, demons are quite easily distinguished by their numeric glyphs. All the typical denizens of Hell and Pandemonium fall under this category
**All undead monsters. These include [[lich]]es, [[List of mummies|mummies]] of all types, [[skeletal warrior]]s, and all [[skeleton]]s, [[simulacra]], and [[zombie]]s. Note that [[profane servitor]]s are resistant to [[cleansing flame]]
*Silver: Any [[chaotic]] monsters.
**[[Shapeshifter (monster)|Shapeshifters]], ([[very ugly thing|very]]) [[ugly thing]]s, [[abomination]]s, [[Killer Klown]]s, [[The Royal Jelly]], and [[Tiamat]]
**Monsters with chaotic or [[mutation]]-inflicting attacks, such as [[apocalypse crab]]s and [[orbs of fire]]
**Anything you've [[Polymorph Other|polymorphed]]
*Dragon slaying
**All [[list of dragons|dragons]]
**All [[list of draconians|draconians]]
[[category:intrinsic]]

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