Difference between revisions of "Bad mutations"

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Revision as of 18:09, 2 September 2014

Version 0.14: 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 3% chance of berserking each time you attack in melee. You tend to lose your temper in combat.
3 Chance increased to 9%. You have an uncontrollable temper.

Often referred to as "berserkitis". Stacks additively with items of *Rage or wrath.

Species Notes: Formicids are exempt, because their stasis prevents berserk.

Bad mutation


Defensive

Deformed

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, armour enchantment, 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 Armataurs start with this mutation.
Draconians, octopodes and felids cannot gain this mutation as they cannot wear body armour.

Bad mutation


Scream

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


Movement

Slow

Rank Effect Flavor
1 Movement delay * 1.2 You cover ground slowly.
2 Movement delay * 1.4 You cover ground very slowly.
3 Movement delay * 1.6 You cover ground extremely slowly.

Does not affect the speed of your alternate forms.
Only occurs as a starting mutation, i.e. does not occur randomly.

Species notes:
Barachis start at rank 1. Nagas start at rank 2.

Bad mutation


Teleport

Rank Effect Flavor
1 You are sometimes teleported next to a monster. You are occasionally teleported next to monsters.
2 More frequent teleportation. You are often teleported next to monsters.

Species Notes: Formicids can not teleport and thus can not get this mutation.

Bad mutation


Perception

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.

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.
Replaced by No Unsafe Scrolls in 0.27.

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

Bad mutation


Diet

Herbivorous

Rank Effect Flavor
1 Chunks inedible, rations provide less nutrition. You are a herbivore.

Species notes: Spriggans start at rank 1.

  • This mutation was removed in 0.26.
  • Prior to 0.21, this mutation had three levels.
  • Prior to 0.15, characters could become partially or completely herbivorous through mutations.

Bad mutation


Fast Metabolism

Rank Effect Flavor
1 Nutrition cost of all actions +1 You have a fast metabolism.
2 Nutrition cost of all actions +2 You have a very fast metabolism.
3 Nutrition cost of all actions +3 Your metabolism is lightning-fast.

Species notes: Trolls start at rank 3 (and also have a further, species-specific hunger cost).

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


Forlorn

Rank Effect Flavor
1 You may not worship a god. You shall have no god before yourself.

Demigod exclusive; not implemented as a mutation until 0.28.
From 0.15 to 0.17, was a general mutation that reduced piety gain by 33%.

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


Slow Healing

Rank Effect Flavor
1 No regular HP regeneration when monsters are in line of sight. You do not regenerate when monsters are visible.

Jiyva's regen and Trog's Hand function normally, though all other external regeneration sources fail.
For this mutation's history, see Inhibited Regeneration#History.

Species Notes: Ghouls start at rank 1.
Vampires have this mutation when Bloodless, and thus unable to get it randomly.

Bad mutation


See Also

History

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.