Difference between revisions of "Mutation resistance"

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'''Mutation resistance''' (rMut) provides player a chance to avoid being mutated. Different sources of mutation resistance generally stack additively.
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'''Mutation resistance''' (rMut) provides player a chance to avoid being mutated. Sources of this resistance stack multiplicatively.
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==Useful Info==
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Mutation resistance blocks incoming [[mutation]]s from affecting you. Except for the [[Good mutations#Mutation Resistance|"Mutation Resistance" mutation]], having rMut doesn't block mutations from being removed.
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[[God]]-given mutations (from [[Jiyva]] and [[Xom]]) ignore all mutation resistance except from 1. other divine sources or 2. being undead. Mutations from [[magical contamination]] have a 50% chance to ignore all non-undead resistance, including Zin's divine protection.<ref>{{source ref|0.30.1|timed-effects.cc|105}}<br>The 4th property, "force_mutation", has its value set to coinflip - so it's a 50% chance to ignore all resistances.</ref>
  
 
==Sources==
 
==Sources==
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*You may acquire the [[Good mutations#Mutation Resistance|Mutation Resistance]] mutation. It has three ranks: at ranks 1 and 2, 66% of attempts to mutate you will be blocked. Additionally, at rank 2, 50% of attempts to remove mutations with a potion of cure mutation will fail. At rank 3, you can neither add nor remove any more mutations: they are fixed. The only way to cure them is to use Zin's one-time ability to cure all mutations. Halflings start with this mutation at level 1.
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*The rMut item property (found only on [[Hat of the Alchemist]] and [[lajatang of Order]]) gives a 66% chance to block mutations. The item property does not stack with itself.
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*Two unrands, the [[Hat of the Alchemist]] and the [[Lajatang of Order]], provide mutation resistance when equipped. This is a 66% chance, equivalent to the first rank of the Mutation Resistance 1 mutation. Using both at the same time won't increase the resistance.
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*The [[Good mutations#Mutation Resistance|Mutation Resistance]] mutation can block mutations based on its level. Level 1 gives a 66% chance to block incoming mutations. Level 2 also gives a 50% chance to block mutations from being removed. Level 3 gives a 100% chance to block incoming mutations and removal (barring the above exceptions).
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*[[Zin]] provides a ([[piety]]/200)% chance to protect against attempts to mutate you. Maxed out piety is a perfect defense against mutation attacks.
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*[[Zin]] provides a <code>piety / 1.6</code>% chance to block mutations. At 6* piety, this is full immunity.
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*Being undead makes it so that you will [[rot]] instead of mutate: in general, this is easier to cure than mutations. [[Vampire]]s don't function as undead in this aspect, and will mutate normally. Additionally, [[Necromutation]] causes you to become effectively undead, and so can be used as an emergency source of mutation resistance if you're prepared to deal with rotting.
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*Being [[undead]] ([[Ghoul]], [[Mummy]], [[Lich Form]], but ''not'' [[Vampire]]) provides full, absolute immunity to mutation. Instead, you "rot" when mutating, causing [[stat drain]].
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Also, [[Ashenzari]] provides immunity to mutations that would shatter a [[curse]]d item, like [[Horns]] with a cursed [[helmet]]. This applies to every source of mutation, including magical contamination.
  
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==Existing mutations==
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===Existing mutations===
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Beyond that, your existing mutations also provide mutation resistance of a sort.
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Existing mutations may block further mutations from effecting you.
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*Each mutation you already have gives you 6.5% resistance against future random mutations. This ONLY applies to random mutations; good mutations gained through [[potions of beneficial mutation]], or through use of the [[Deck of wonders#Helix Card|Helix card]] at high power, as well as bad mutations from enemy attacks, still affect you normally.
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*Each mutation you already have gives you 6.5% resistance against future random mutations. This ONLY applies to random mutations; bad mutations from enemy attacks still affect you normally.
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*Any time you resist a random mutation through this method, you have a 33% chance of losing one of your mutations as well. This allows you to use [[potions of mutation]] as limited [[potions of cure mutation]] if you find yourself suffering from many, many bad mutations, though it is by no means guaranteed not to simply make things worse.
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*Any time you resist a random mutation through this method, you have a 33% chance of losing one of your mutations as well.
  
 
==History==
 
==History==
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Prior to 0.18, [[amulet of resist mutation]] existed.
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*Prior to [[0.29]], [[Ashenzari]] did not provide protection against mutations.
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*Prior to [[0.27]], [[Halfling]]s started with a level of mutation resistance.
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*Prior to [[0.21]], [[Zin]]'s mutation protection was 100% at 200 piety instead of 160 piety.
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*Prior to [[0.20]], [[potions of cure mutation]] existed.
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*Prior to [[0.18]], [[amulet of resist mutation]] existed.
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*Prior to [[0.15]], [[Vampire]]s could resist mutations based on their blood level.
  
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Prior to 0.15, [[vampire]] mutation effects depended on their satiation level.
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==References==
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<references/>
  
 
[[Category:Mutations]]
 
[[Category:Mutations]]

Latest revision as of 21:43, 2 September 2023

Version 0.30: This article may not be up to date for the latest stable release of Crawl.

Mutation resistance (rMut) provides player a chance to avoid being mutated. Sources of this resistance stack multiplicatively.

Useful Info

Mutation resistance blocks incoming mutations from affecting you. Except for the "Mutation Resistance" mutation, having rMut doesn't block mutations from being removed.

God-given mutations (from Jiyva and Xom) ignore all mutation resistance except from 1. other divine sources or 2. being undead. Mutations from magical contamination have a 50% chance to ignore all non-undead resistance, including Zin's divine protection.[1]

Sources

  • The rMut item property (found only on Hat of the Alchemist and lajatang of Order) gives a 66% chance to block mutations. The item property does not stack with itself.
  • The Mutation Resistance mutation can block mutations based on its level. Level 1 gives a 66% chance to block incoming mutations. Level 2 also gives a 50% chance to block mutations from being removed. Level 3 gives a 100% chance to block incoming mutations and removal (barring the above exceptions).
  • Zin provides a piety / 1.6% chance to block mutations. At 6* piety, this is full immunity.
  • Being undead (Ghoul, Mummy, Lich Form, but not Vampire) provides full, absolute immunity to mutation. Instead, you "rot" when mutating, causing stat drain.

Also, Ashenzari provides immunity to mutations that would shatter a cursed item, like Horns with a cursed helmet. This applies to every source of mutation, including magical contamination.

Existing mutations

Existing mutations may block further mutations from effecting you.

  • Each mutation you already have gives you 6.5% resistance against future random mutations. This ONLY applies to random mutations; bad mutations from enemy attacks still affect you normally.
  • Any time you resist a random mutation through this method, you have a 33% chance of losing one of your mutations as well.

History

References

  1. ↑ timed-effects.cc:105 (0.30.1)
    The 4th property, "force_mutation", has its value set to coinflip - so it's a 50% chance to ignore all resistances.
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