Difference between revisions of "Bad mutations"

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Here is a list of all the '''bad mutations''' you can acquire. Although some may have valuable uses, they are at best mixed blessings. See [[good mutations]] for the other sort.
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{{version021}}
=Offensive=
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Here is a list of all the '''bad mutations''' you can ''acquire''. Although some may have situational uses, they are at best mixed blessings. Any of these can be acquired through any source of bad mutations.
Many of these mutations will prevent your character from wearing items in certain equipment slots. While this penalty may outweigh the gain your character receives, bear in mind that races which cannot use those slots ([[ogre]]s, [[troll]]s, [[felid]]s, etc.) anyway lose nothing.
 
  
===Claws===
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==Offensive==
Improves the damage of your [[Unarmed Combat]] fist attacks. Damage rises with rank. At rank 3, [[gloves]] are prohibited. [[Troll]]s start at rank 3, [[ghoul]]s at rank 1.  The felid mutation is technically separate but equivalent to rank 1. Any rank allows you to butcher corpses bare-handed.
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===Berserk===
{{flavour|1.You have sharp fingernails.<br>2. You have very sharp fingernails.<br>3. You have claws for hands.}}
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{{:Berserk (mutation)}}
  
===Beak===
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===MP-Powered Wands===
Grants an auxiliary Unarmed Combat peck attack. [[Helmet]]s are prohibited. Tengu start with this. Can be used to butcher corpses in combination with the Talons mutation.{{flavour|You have a beak for a mouth.}}
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{{:MP-Powered Wands}}
  
===Horns===
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==Defensive==
Grants an auxiliary Unarmed Combat butt attack. Damage rises with rank. At any rank, helmets are prohibited. At rank 3, all headgear is prohibited. Minotaurs start at rank 2.
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===Deformed Body===
{{flavour|1.You have a pair of small horns on your head.<br>2. You have a pair of horns on your head.<br>3. You have a pair of large horns on your head.}}
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{{:Deformed}}
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===Screaming===
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{{:Scream}}
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===Teleportitis===
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{{:Teleport (mutation)}}
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==Consumable usage==
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===Blurry Vision===
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{{:Blurry Vision}}
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===No Potion Heal===
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{{:No Potion Heal}}
  
===Hooves===
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==General==
Grants an auxiliary Unarmed Combat kick attack. Damage rises with rank. At rank 3, [[boots]] are prohibited. [[Centaur]]s start at rank 3.
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===Deterioration===
{{flavour|1. You have large cloven feet.<br>2. You have hoof-like feet.<br>3. You have hooves in place of feet.}}
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{{:Deterioration}}
  
===Talons===
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===Frail===
Grants an auxiliary Unarmed Combat kick attack. Damage rises with rank. At rank 3, [[boots]] are prohibited. Tengu start at rank 3 with a unique description. Any rank combined with the Beak mutation allows you to butcher corpses bare-footed.
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{{:Frail}}
{{flavour|1. You have sharp toenails.<br>2. You have razor-sharp toenails.<br>3. You have claws for feet.<br> Tengu. You have talons in place of feet.}}
 
  
===Angry===
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===Low MP===
Grants a chance of going [[berserk]] every time you attack. ("You feel a little pissed off.") Chance of berserking rises with rank (1%, 3%, 9%), while chance of passing out decreases. [[Clarity]] negates it.
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{{:Low MP}}
{{flavour|1. You tend to lose your temper in combat.<br>2. You often lose your temper in combat.<br>3. You have an uncontrollable temper.}}
 
  
=Defensive=
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===Reduced Attributes===
===Deformed Body===
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{{:Reduced Attributes}}
Reduces AC provided by your body armour by half its base AC. Does not affect AC from any other source, and bonus AC from your [[Armour]] skill is still calculated based on the armour's full base AC. Ranks 2 and 3 have no further effect, other than making the mutation harder to remove. [[Naga]]s and [[Centaur]]s start at rank 1.
 
{{flavour|1.Armour fits poorly on your unusually shaped body.<br>2. Armour fits poorly on your deformed body.<br>3. Armour fits poorly on your badly deformed body.}}
 
  
===Scream===
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===Inhibited Regeneration===
Causes you to [[t|shout]] periodically, as though you'd pressed the "!" key. Higher ranks mean more shouting and also makes your shouts louder.
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{{:Inhibited Regeneration}}
{{flavour|1. You occasionally shout uncontrollably.<br>2. You sometimes yell uncontrollably.<br>3. You frequently scream uncontrollably.}}
 
  
=Movement=
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===Subdued Magic===
===Slowness===
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{{:Subdued Magic}}
Slows your movement speed by multiplying your current speed score by 1.2 each rank. Does not affect your alternate forms. Nagas start at rank 2.
 
{{flavour|1. You cover ground slowly.<br>2. You cover ground very slowly.<br>3. You cover ground extremely slowly.}}
 
===Teleportitis===
 
Grants [[teleportitis]], similar to a [[ring of teleportation]]. Higher ranks increase frequency. An [[amulet of stasis]] negates it and other teleportation, while [[teleport control]] allows it to be controlled at the cost of [[glow]].
 
{{flavour|1. Space occasionally distorts in your vicinity.<br>2. Space sometimes distorts in your vicinity.<br>3. Space frequently distorts in your vicinity.}}
 
  
=Perception=
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==See Also==
===Blurry Vision===
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*[[Good mutations]]
Grants a cumulative 20% chance to fail reading a book or scroll per rank. Any rank disables passive scanning for traps.
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*[[Demonspawn mutations]]
{{flavour|1. Your vision is a little blurry.<br>2. Your vision is quite blurry.<br>3. Your vision is extremely blurry.}}
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*[[Jiyva mutations]]
===Antennae===
 
Lets you detect any monsters within a certain radius of you, even if invisible or through walls - usefully, this includes mimics. Prohibits use of [[helmet]]s. [[Demonspawn]] may receive this upon leveling up. Rank 1: 3 tile radius (including the player). Rank 2: 5 tile radius. Rank 3: 7 tiles, plus gives see invisible.
 
{{flavour|1. You have a pair of small antennae on your head.<br>2. You have a pair of antennae on your head.<br>3. You have a pair of large antennae on your head.}}
 
  
=Diet=
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==History==
===Herbivorous===
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Prior to [[0.20]], the inhibited regeneration mutation had 3 ranks.
Each rank increases the [[nutrition]] gained from vegetation while reducing that of meat, including [[chunk]]s. Rank 3 prohibits eating any meat. [[Centaur]]s start at rank 1, and [[Spriggan]]s start at rank 3.
 
{{flavour|1. You digest meat inefficiently.<br>2. You digest meat very inefficiently.<br>3. You are a herbivore.}}
 
  
===Fast Metabolism===
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Prior to ???<!-- TODO Please find out when -->, the slow metabolism mutation could be acquired, and the degeneration mutation had 3 ranks.
Each rank increases the nutrition cost of all actions by 1. Trolls start at rank 3, while centaurs start at rank 2.
 
{{flavour|1. You have a fast metabolism.<br>2. You have a very fast metabolism.<br>3. Your metabolism is lightning-fast.}}
 
  
=General=
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Prior to [[0.17]], the [[Forlorn]] mutation was available.
===Deteriorating Body===
 
Causes periodic, temporary stat loss. Higher rank increases frequency. A [[ring of sustain abilities]] will negate this.
 
Natural recovery from stat loss tends to keep rank 1 in check. Ranks 2 and 3 will eventually kill you via [[stat death]] if allowed to progress unchecked.
 
{{flavour|1. Your body is slowly deteriorating.<br>2. Your body is deteriorating.<br>3. Your body is rapidly deteriorating.}}
 
  
===Flexible Muscles===
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Prior to [[0.14]] the Slow mutation occurred randomly and levels 1 and 2 of the Slow Healing mutation cut natural regeneration by 33% and 66% respectively, regardless of enemy presence.
Each rank grants +1 DEX and -1 STR. This mutation is mutually exclusive with Stiff Muscles.
 
{{flavour|1. Your muscles are flexible, but weak.<br>2. Your muscles are very flexible, but weak.<br>3. Your muscles are extremely flexible, but weak.}}
 
===Frail===
 
Each rank reduces max HP by 10%. This mutation is mutually exclusive with Robust.
 
{{flavour|1. You are frail.<br>2. You are very frail.<br>3. You are extremely frail.}}
 
===Low Magic===
 
Each rank reduces max MP by 10%. This mutation is mutually exclusive with Energetic.
 
{{flavour|1. Your magical capacity is low.<br>2. Your magical capacity is very low.<br>3. Your magical capacity is extremely low.}}
 
===Reduced Attributes===
 
Gives you -1 to an attribute per rank, up to -14 for each. Each of these mutations is mutually exclusive with its Improved Attribute counterpart.
 
{{flavour|You are weak.<br>You are dopey.<br>You are clumsy.}}
 
===Slow Healing===
 
Each level of this mutation decreases your [[regeneration rate]] by one third. This effect also affects the recovery rate of stat loss. At level 3, you will be unable the recover HP or attributes naturally.
 
{{flavour|You heal slowly.<br>You heal very slowly.<br>You do not heal naturally.}}
 
===Stiff Muscles===
 
Each rank grants +1 STR and -1 DEX. ("Your muscles feel sore.") This mutation is mutually exclusive with Flexible Muscles.
 
{{flavour|1. Your muscles are strong, but stiff.<br>2. Your muscles are very strong, but stiff.<br>3. Your muscles are extremely strong, but stiff.}}
 
  
=Jiyva=
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Prior to [[0.13]], [[Reduced Attributes]] could be acquired up to 14 times, giving you -1 per rank.
These mutations can only be acquired as gifts while worshiping [[Jiyva]].
 
===Pseudopods===
 
Grants an auxiliary Unarmed Combat slap attack. Each rank increases damage by 4. Also reduces AC benefits of equipment like the Deformed Body mutation.
 
{{flavour|1. Armour fits poorly on your pseudopods.<br>2. Armour fits poorly on your large pseudopods.<br>3. Armour fits poorly on your massive pseudopods.}}
 
===Spawn Jelly===
 
Eating food may create a neutral [[jelly]] (hostile if you no longer worship Jiyva).
 
{{flavour|You occasionally spawn a jelly by eating.}}
 
  
[[Category:Intrinsic]]
 
 
[[Category:Mutations]]
 
[[Category:Mutations]]
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[[Category:Bad Mutations]]
 
[[Category:List]]
 
[[Category:List]]

Latest revision as of 12:06, 25 February 2020

Version 0.21: This article may not be up to date for the latest stable release of Crawl.

Here is a list of all the bad mutations you can acquire. Although some may have situational uses, they are at best mixed blessings. Any of these can be acquired through any source of bad mutations.

Offensive

Berserk

Rank Effect Flavor
1 1% chance of berserking each time you attack. Reduces chance of passing out afterwards to 3%. You tend to lose your temper in combat.
2 Same, with a 3% chance of berserking and 2% chance of passing out. You often lose your temper in combat.
3 Same, with a 9% chance of berserking and 1.5% chance of passing out. You have an uncontrollable temper.

Often referred to as "berserkitis", Clarity or "Near Starving" hunger negates this.

Formicids are exempt, because their stasis stops them from berserking.

Bad mutation

MP-Powered Wands

Rank Effect Flavor
1 Zapping a wand costs 3 MP. You expend magic power (3 MP) to strengthen your wands.

Bad mutation

Defensive

Deformed Body

Rank Effect Flavor
1 Reduces body armour base AC by half. Armour fits poorly on your strangely shaped body.

Does not stack with Jiyva's Pseudopods mutation. Does not affect AC from any other source (i.e. other equipment, the protection ego, etc.). Bonus AC from your Armour skill is still calculated based on the armour's full base AC.

Species notes: Nagas and Centaurs start with this mutation. Draconians, octopodes and felids cannot gain this mutation as they cannot wear body armour.

Bad mutation

Screaming

Rank Effect Flavor
1 Chance to shout when enemies enter line of sight (same noise as tt). You occasionally shout uncontrollably at your foes.
2 Greater chance for louder shouts. You sometimes yell uncontrollably at your foes.
3 Greatest chance for loudest shouts. You frequently scream uncontrollably at your foes.

Bad mutation

Teleportitis

Rank Effect Flavor
1 You are sometimes teleported next to a monster a short distance away from you. You are occasionally teleported next to monsters.
2 More frequent and can be teleported longer distances. You are sometimes teleported next to monsters.
3 Most frequent and can be teleported to anywhere on the floor. You are often teleported next to monsters.

Formicids are exempt, because they cannot teleport.

Bad mutation

Consumable usage

Blurry Vision

Rank Effect Flavor
1 +5 auts to read scrolls. Scrolls take you a little longer to read.
2 +10 auts to read scrolls. Scrolls take you longer to read.
3 +20 auts to read scrolls. Scrolls take you much longer to read.

Note that the normal 10 aut delay to read a scroll still applies. Specifically, reading a scroll involves first the penalty from blurry vision, then the scroll takes effect, then the normal 10 aut delay for reading the scroll occurs.

Prior to 0.16, this mutation gave a 20%/40%/60% chance to fail all attempts to read books or scrolls.

Bad mutation

No Potion Heal

Rank Effect Flavor
1 Potions of curing and heal wounds heal 2/3 of what they would normally. Potions are less effective at restoring your health.
2 Potions of curing and heal wounds heal 1/3 of what they would normally. Potions are poor at restoring your health.
3 Potions of curing and heal wounds do not restore any HP. Potions cannot restore your health.

Species information: Vine Stalkers start at rank 3.

Bad mutation

General

Deterioration

Rank Effect Flavor
1 A small chance for stat loss whenever you take damage. Your body sometimes deteriorates on taking damage.
2 Increased chance for stat loss. Your body often deteriorates on taking damage.

Bad mutation

Frail

Rank Effect Flavor
1 Max HP -10% You are frail.
2 Max HP -20% You are very frail.
3 Max HP -30% You are extremely frail.

Bad mutation

Low MP

Rank Effect Flavor
1 Max MP -10% Your magical capacity is low.
2 Max MP -20% Your magical capacity is very low.
3 Max MP -30% Your magical capacity is extremely low.

Bad mutation

Reduced Attributes

Rank Effect Flavor
1 -2 to STR, INT or DEX You are weak
You are dopey.
You are clumsy.
2 -4 to STR, INT or DEX You are very weak
You are very dopey.
You are very clumsy.

While it's possible to gain this mutation multiple times, each attribute is limited to 2 ranks.

Bad mutation

Inhibited Regeneration

Rank Effect Flavor
1 No (non-divine) HP regeneration when monsters are in line of sight. You do not regenerate when monsters are visible.

Species notes: Ghouls start at rank 1.

The regeneration spell will not function when this mutation is active, however Trog's Hand will.

  • Prior to 0.20, this mutation was called slow regeneration, and it had 3 ranks: at rank 1, regeneration was slowed when monsters were visible, rank 2 was the current rank 1, and at rank 3 regeneration was completely stopped.
  • Prior to 0.17, this mutation was called slow healing.

Bad mutation

Subdued Magic

Rank Effect Flavor
1 Spell Power-, Spell Success+ Your spells are a little easier to cast, but a little less powerful.
2 Spell Power--, Spell Success++ Your spells are easier to cast, but less powerful.
3 Spell Power---, Spell Success+++ Your spells are much easier to cast, but much less powerful.

Bad mutation

See Also

History

Prior to 0.20, the inhibited regeneration mutation had 3 ranks.

Prior to ???, the slow metabolism mutation could be acquired, and the degeneration mutation had 3 ranks.

Prior to 0.17, the Forlorn mutation was available.

Prior to 0.14 the Slow mutation occurred randomly and levels 1 and 2 of the Slow Healing mutation cut natural regeneration by 33% and 66% respectively, regardless of enemy presence.

Prior to 0.13, Reduced Attributes could be acquired up to 14 times, giving you -1 per rank.