Stat effects

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Stat effects change one or more of the five basic attributes (stat) of a character.

Some effects conflict with each other and with stat items, which are items that provide at least partly positive stat effects.

The effects of being subjected to conflicted effects/items is explained in the Combining_stat_items section.

Other stat effects do not interact with stat items or other stat effects, they come under positive and partly positive and negative.



Any reduction of strength that causes you to become burdened 50% or more will additionally give a dexterity penalty due to the burden.

Many stat items and effects affect more than one stat.

Combining stat items

Mudlib-conf.gif This section contains formulae or data from the distribution mudlib. The data has been verified as up to date with research on 26th July 2009.

Combining stat items has the following effects:

  • The first item has its effects applied as usual.
  • For each stat of the nth item after that:
    • If that item has a positive modifier S for a stat, then that modifier is set to S / (n + 1), rounded down.
    • If that item has a negative modifier S for a stat, then that modifier is set to S * n.
    • If that item has no modifier for a stat, then its modifier is set to -n.

As an example, consider the following stat effects:

Effect Con Dex Int Str Wis
Bless +1 +1 +1 +1 +1
Prayer beads (radiant) +2
Flat cap +2 -3 +3

These produce the following effects when combined:

Flat cap then prayer beads
N Effect Con Dex Int Str Wis
0 Flat cap +2 -3 +3
1 Prayer beads -1 -1 -1 -1 +1
Result -1 -1 +1 -4 +4
Prayer beads then bless
N Effect Con Dex Int Str Wis
0 Prayer beads +2
1 Bless +0 +0 +0 +0 +0
Result +2
Bless then flat cap
N Effect Con Dex Int Str Wis
0 Bless +1 +1 +1 +1 +1
1 Flat cap -1 -1 +1 -3 +1
Result +2 -2 +2
Bless then flat cap then prayer beads
N Effect Con Dex Int Str Wis
0 Bless +1 +1 +1 +1 +1
1 Flat cap -1 -1 +1 -3 +1
2 Prayer beads -2 -2 -2 -2 +0
Result -2 -2 -4 +2

Equipable Stat Items

Bronze helm (+3 int, +2 wis, -3 con)

+3 intelligence, +2 wisdom, -3 constitution

Does HP damage and eventually kills if worn for too long.

Dex gloves (+2 dex, -1 str)

+2 dexterity, -1 strength, Drains GP

Flat cap (+3 wiz, +2 int, -3 str)

+3 wisdom, +2 intelligence, -3 strength

Does HP damage, and eventually kills if worn for too long.

Klein bottle (+1 int or +2 int)

A Klein bottle gives +1 of intelligence while the bottle is held and filled with "small waves", "eddying currents", "turbulence", "whirlpool" or "maelstrom" of energy.

A Klein bottle gives +2 of intelligence while the bottle is held and filled with "tempest", "vortex" or "impossible chaos" of energy.

Prayer beads (+1 wis or +2 wis)

+1 wisdom at bright, +2 wisdom at radiant

These must be held and charged by using faith gp before they become stat items.

Wizards and Witches are unable to hold prayer beads, so are unable to gain any stat benefit from prayer beads, even when fully charged.

Strength gauntlets (+2 str)

+2 strength, drains GP

Thief's daggers (+1 dex)

+1 dexterity

Two of them must be held at once.

Positive effects that interfere with stat items and each other

Bless (+1 all)

Gained from the ritual.

  • Bless interferes with stat items and other effects in this section.

Ways to get bless without a player performing it:

  • By offering tobacco or makeup at the shrine to Oshun at the northwest end of Lover's Walk in Genua.
  • Inside a hidden shrine to the Small Gods in Djelibeybi if your alignment is good enough, but it takes a while to reset after an attempted use.
  • You can try searching a cairn in Djelibeybi, but you might get a lightning bolt to the head instead.
  • It is one of the rewards for giving a sacrifice at one of the sacrificial altars in Ephebe, but wizards and witches cannot receive rewards for it.
  • There's a shrine in the courtyard of the Chronides farmhouse where you can offer incense for a bless.

Blink (+1 str)

Witches can squint with method blinking thereby inspiring humans to have +1 strength for a while.

  • There is no confirmed blink that increased strength by +2, though this might be possible with godly bonuses.
  • Blink interferes with stat items and other effects in this section.

Positive stat effects (or partly positive) that do not conflict with other effects

Berserk (+1 str and dex)

Gained from the command. After berserk wears off, there will be -2 to strength and constitution for a while.

  • Can only be used by warriors.

Chocolate die (+1 or +2 random stat, -1 after)

Sold at the Mad Wolf sweetie shop.

  • Usually gives +1 to a random stat for a while, and then -1 to that stat for a while afterwards.
  • Other times it gives -1 to a stat for a while, and then +1 to that stat for a while afterwards.
  • It's also possible to receive +2 to a random stat instead, and -1 for a while afterwards.
  • The chance of that may depend on being a valued customer at the shop.
  • Consuming an additional die while still under the effects of a first gives -1 constitution. You have to wait for a message that says "you feel normal again" before eating a new die without penalty.
  • This stat effect appears to stack with other stat effects.

Edible cockroaches (+1 int, -5 con, -2 dex)

Eating edible cockroaches can give you +1 intelligence for about 5 minutes, but also -5 constitution and -2 dexterity.

Ephebian horse (+2 int)

A replica of the wooden horse used in the Tsortean wars is located in the northeast outside the citadel in Ephebe.

  • Being inside for around 15 seconds gives +2 intelligence for about 15 minutes, followed by +1 intelligence for the next 15 minutes.
  • This bonus can be used without interfere with other stat effects.

Intelligence tea (+1 int, then -1 int)

Gives +1 intelligence when drunk, and then -1 intelligence for a while. This effect can be combined with other effects that do not affect intelligence.

Sek altar (+1 str)

Putting a human heart on the Sek low altar in Ankh-Morpork gives you +1 strength for 15 minutes.

  • This can be combined with other effects without experiencing additional negative modifiers.

Shrine (+1 wis, then +2 wis)

Going in a shrine to the Small Gods and waiting there a while gives you a +1 wisdom boost.

  • If you leave, reenter and again wait a while another point is added for a total of +2 wisdom.
  • You cannot get +3 wisdom even if you try several shrines.
  • This can be combined with other effects without experiencing additional negative modifiers.
  • These shrines can also bring you back to life if you suffer an untimely demise.

You know that you are in such a room when you get this message on entry:

You feel a sense of peace here.

The most widely used shrine to the Small Gods is on Sinners' Walk just south of the market in Ohulan Cutash.

  • You regain gp and can use commands there.

The mountain shrine to the Small Gods in a cave southwest of the Giants' land also works.

  • You cannot regain gp and cannot use commands in that cave.
  • The cave is in a dangerous areas inhabited by yetis and lynxes that pursue and evil trolls at night that do not pursue.

There is a shrine to the Small Gods in Razorback but it doesn't provide the wisdom boost.

  • You can fill a cup chained there and drink it, the ice cold water making you feel strong/agile/wise/intelligent/healthy and the reverse weak/clumsy/silly/stupid/sick but this doesn't seem to have any effect.

Mazda's statue (thief only +1 dex)

If a thief fences a stolen item of sufficient value to the statue of Mazda in the entrance hall of the AM Thieves' Guild, in exchange he will bestow +1 dexterity for a short amount of time.

  • The item must be stolen and expensive, this seems to be related to your guild level.
  • Mazda will only accept offerings from thieves.

Warrior's Brain Cell (warriors +1 int & +1 str, others: +1 str & -1 int)

When eaten, gives +1 intelligence to warriors and +1 strength and -1 intelligence to others.

Wungle's Great Sucking (+1 con up to +3 con)

Up to +3 constitution boost for the caster. Constitution reduction for the victim. This can be safely combined with other stat items and effects that do not affect constitution.

Negative stat effects

Arms, removed or on armpit (-1 to -8 dex)


  • Casting in an area with high thaums can get your arms (or legs) torn off by the Thyngs from the Dungeon Dimensions.
  • A major fail when casting Booch's Extremal Polymorphism removes an arm.
  • Casting Booch's Extremal Polymorphism causes the caster to grow a new arm (that doesn't fall off after a time limit) and causes all arms (including the original two) susceptible to being lost during normal combat, even if the damage is absorbed by shields or the attack is parried.
  • Casting Yordon's Extremal Extension causes the caster to grow one extra new arm, but it falls off when the spell expires. This typically takes around 15 minutes, but a fluke cast can last 4 hours.


  • Losing just one of your original arms -1 dex penalty.
  • Losing both original arms -8 dex penalty, even if you currently have other non-standard arms.
  • Having a left/right armpit arm -2 dex, or -3 dex if you have both armpit arms.


  • You can go to the Igor in the Five Ways bell tower (under a slab) and ask him to fix you.
  • Dying resets your arms to the original two, this works even if it is not a death that takes a life like a PK death, dying in the PK Arena or dying in CTF.

Broken leg(s) (-3 dex per broken leg, walking on them also reduces dex, str & con)

Each broken leg gives you a penalty of -3 dexterity.

  • In addition, trying to walk on broken legs reduces dexterity, then strength and constitution.
  • The penalties to strength and constitution can be cured with Restore, but will reoccur after you walk again.
  • To permanently deal with broken legs, witches can splint your legs, or doctor npcs in fixed locations can "set" your legs.

Burden (-1 to -6 dex)

  • 50-74% burden results in a -1 dex penalty.
  • 74-99% burden results in a -2 dex penalty.
  • 100-124% burden results in a -3 dex penalty.
  • 125-149% burden results in a -4 dex penalty.
  • 150-174% burden results in a -5 dex penalty.
  • 175-200% burden results in a -6 dex penalty.

Common cold (-1 to -6 str)

Reduces strength, stand in a smithy or take cold cure to get rid of it.

  • Interacting with Pewsey around Granny's cottage in any way will give you a cold.

Crawling (-5 dex)

Reduces dexterity by 5 for as long as you're crawling.

Cross-contemplation (-4 int, then -2 int, then -1 int)

Contemplating a spell, and then contemplating a different spell before you've fed enough gp into the first one will give you an intelligence penalty of -4, then -2, and then -1.

  • The time each penalty lasts depends on an unknown factor, possibly gp used for the second contemplate or both contemplates combined, and may be any duration from less than 20 seconds to over 20 minutes.

Donating blood (-2 con)

Donating blood to the Igor in the side room of the dark classy bar gives -2 constitution for about 15 minutes.

Flying Cockroaches (-1 int per cockroach in your brain)

There are flying cockroaches that flies on to you and burrows into your brain. They appear sometimes when searching a the room with the acids in the Alchemists' Guild.

  • For each cockroach that stays for a few seconds before you shake it off you receive -1 intelligence stat penalty for a few minutes.
  • After being shaken, the cockroach returns to the room where it can try to fly back at you a few seconds later.
  • Armour and arcane shields are ineffective at preventing the cockroaches from burrowing into your brain.
  • A high bonus in dodging is very effective to keep them off.

Fyodor's Nimbus of Porterage (-1 or -2 int, -2 or -3 str)

Casting the spell Fyodor's Nimbus of Porterage results in reduced intelligence and strength. The exact amount of the reduction varies, and both stats will go back to normal over time.

Gammer Shorga's Clever Creeper (-1 int on success, on failure -3 int)

-1 intelligence when cast successfully for about 15 minutes.

-3 intelligence on cast failure for about 2 minutes.

GP Tea (-1 int after)

When you drink GP tea it gives you a boost of gp. When it expires it tries to removes the gp boost that it gave when drunk and it can give you a penalty of -1 intelligence, especially if it cannot get all the gp back because it would put you below 0.

Heatstroke (-1 to -5 int & wis)

Heatstroke will eventually give -1 to both intelligence and wisdom, increasing to -2 in both somewhere around the point you are "close to death from extreme heatstroke", then increasing further to -3, then -4, then -5.

  • The stat penalty can also go down while you still have heatstroke.
  • A convenient place to get heatstroke is Sek's high altar in Bes Pelargic, as it is "incredibly, unbelievably hot" there.
  • Stand somewhere cool, remove warm clothing to get rid of it. Heatstroke can kill.

Hundred year old eggs (-1 to -8 dex)

Eating one of these will make you sick, causing a gradually increasing loss of dexterity from -1 to -8.

However, if you eat a second hundred year old egg too soon after the effects of eating the first one wears off, then you just get a penalty of -2, then -1 dex for some time.

Hypothermia (-1 to -3 con, -1 to -4 str)

Damages strength and constitution. Stand in a smithy to get rid of it. Hypothermia can kill.

Inhaling Water (-1 con)

Trying to talk while underwater causes you to inhale water. This negative effect can stack. Your health returns to normal after about 15 minutes.

Lead Nose (-2 con, -2 int, -2 wis)

A lead nose from Who Nose gives you -2 to constitution, intelligence, and wisdom for as long as you wear the nose.

Mocking yourself (-2 wis, then -1 wis)

Each attempt to mock yourself gives you -2 wisdom for 15 minutes, then -1 wisdom for another 15 minutes for a total of 30 minutes of stat loss.

Ohulan Cutash doctor (-1 con)

Letting the "doctor" in Ohulan Cutash operate on you leaves you with -1 constitution for about 10 minutes. The effect stacks--doing it twice in a row will give you -2, and so on.

Restore will remove the stat effect.

Pandora's Box (-2 con, -2 str, +2 wis)

Opening Pandora's Box gives you -2 constitution, -2 strength, and +2 wisdom for a bit, lessening to -1, -1, and +1 after a while.

  • The entire stat effect lasts about half an hour, and the box explodes when opened. The effect also comes with emotes.

Scorpion Poison Sac (-5 con, -2 dex)

Eating a scorpion poison sac results in -5 constitution and -2 dexterity.

Scorpion Sting (-5 con, -2 dex)

Scorpions in Djelibeybi sting everyone fighting in the room they're in. This does not make them fight the victims so they can keep stinging.

The cautious scorpion viciously stabs the outgoing wealthy woman with its tail!  The outgoing wealthy woman seethes in agony.
The cautious scorpion stabs you with its tail!  You seethe in agony.
Your eyeballs melting would be less torture.

The result is a stat loss of -5 constitution and -2 dexterity, like eating a scorpion poison sac.

In addition, each time you get the eyeballs melting message you seem to take about 5% hitpoints of damage.

Drinking antidote tea cures the stat loss and prevents further damage being done.

Scroll-handling check (-1 to -3 intelligence and/or wisdom)

A surreptitious rustling sound starts emanating from your person.
There is a bright flash of light as a couple of spells escape from their scrolls, leaving you slightly dazed.
An intense flash of light bursts forth as a few spells escape from their scrolls, leaving you quite dizzy.
  • This can temporarily reduce your stats, the following have recently be seen: -1 int, -2 wis; int unchanged, -3 wis.
  • Sometimes this also hurts, about 100 hp damage has been seen.
  • If your intelligence goes down enough, you'll fall unconscious for a while.

The following has not been seen in a while, please confirm if this happened to you in the last year:

  • The reduced stats also reduces bonus. this causes an additional skillcheck against your remaining scrolls.
  • The cycle of failed skillcheck -> reduced intelligence -> reduced bonus -> new skillcheck -> failed skillcheck can repeat several times, causing damage each time. This can be fatal!

Spider Poison (-5 con, -2 dex)

Reduces constitution.

Unquiet Spirit (fail: -1 or more con)

Failing Unquiet Spirit can damage your constitution.

Wungle's Body Part Suggestion (-1 con or more)

Constitution reduction for the victim while the spleen is running about, longer if the spleen runner is killed.

Yarrow (-5 con & -2 dex)

Eating 2 handful of yarrow and waiting 2 minutes gives -5 constitution and -2 dexterity.

Vampire bite (-2 dex, -2 int, -2 str, -2 wis)

Vampires have a special bite attack that causes temporary stat loss of -2 dexterity, -2 intelligence, -2 strength and -2 wisdom.

  • It can also make the victim stumble around and fall unconscious.

The Best Combination

The best stat boosting combination known gives an overall boost of +14 to stats, and is achieved as follows:

Con Dex Int Str Wis
+4 +1 +4 +2 +3

You can replace the bless for any stat item, for example with strength gauntlets:

Con Dex Int Str Wis
+3 +0 +3 +3 +2