Difference between revisions of "Magic contamination"
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'''Magic contamination''' is a dangerous condition caused by miscasts and some magical effects. | '''Magic contamination''' is a dangerous condition caused by miscasts and some magical effects. | ||
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Various activities cause harmful magical energies to accumulate in your body. A small amount of magical contamination (a dark or light grey "Contam" status) is mostly harmless, and will dissipate over time without any further effect. Larger amounts of accumulated magic contamination (a yellow, red, or dark red "Contam" status) will make you start to [[glow]] with magical contamination. | Various activities cause harmful magical energies to accumulate in your body. A small amount of magical contamination (a dark or light grey "Contam" status) is mostly harmless, and will dissipate over time without any further effect. Larger amounts of accumulated magic contamination (a yellow, red, or dark red "Contam" status) will make you start to [[glow]] with magical contamination. | ||
| − | The glow from severe contamination makes you easier to hit and reveals you if [[invisible]] | + | The glow from severe contamination (>=5) makes you easier to hit and reveals you if [[invisible]], similar to the [[Corona]] spell. Over time you may also suffer damage and [[mutation]]s. |
Any amount of contamination can cause [[ugly thing]]s adjacent to you change their colour. | Any amount of contamination can cause [[ugly thing]]s adjacent to you change their colour. | ||
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! Contam<ref>{{source ref|0.19.0|player.cc|4142}}</ref> | ! Contam<ref>{{source ref|0.19.0|player.cc|4142}}</ref> | ||
| − | ! Colour<ref>{{source ref|0.19.0|status.cc| | + | ! Colour<ref>{{source ref|0.19.0|status.cc|802}}</ref> |
! Description<ref>{{source ref|0.19.0|player.cc|4178}}</ref> | ! Description<ref>{{source ref|0.19.0|player.cc|4178}}</ref> | ||
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| You are very lightly contaminated with residual magic. | | You are very lightly contaminated with residual magic. | ||
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| − | | 3 | + | | 3 |
| Dark grey | | Dark grey | ||
| You are lightly contaminated with residual magic. | | You are lightly contaminated with residual magic. | ||
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==Sources== | ==Sources== | ||
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===Spells=== | ===Spells=== | ||
*[[Disjunction]]: 0.75 to 1.25 per cast<ref>{{source ref|0.19.0|spl-transloc.cc|71}}</ref> | *[[Disjunction]]: 0.75 to 1.25 per cast<ref>{{source ref|0.19.0|spl-transloc.cc|71}}</ref> | ||
| − | *[[ | + | *[[Irradiate]]: 1.25 to 2 per cast |
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===[[Miscast]]s=== | ===[[Miscast]]s=== | ||
*Every miscast: Amount depends on severity etc.<ref>{{source ref|0.19.0|spl-cast.cc|1532}}</ref> | *Every miscast: Amount depends on severity etc.<ref>{{source ref|0.19.0|spl-cast.cc|1532}}</ref> | ||
| − | * | + | *[[Transmutations]] miscast: Doubles current contam |
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===Other=== | ===Other=== | ||
| − | *[[ | + | *[[Invisibility (ego)]]: (?) |
*Removing an [[artefact]] with *Contam: 7<ref>{{source ref|0.19.0|player-equip.cc|326}}</ref> | *Removing an [[artefact]] with *Contam: 7<ref>{{source ref|0.19.0|player-equip.cc|326}}</ref> | ||
*[[Mutagenic fog]]: 1.3 to 2.55<ref>{{source ref|0.19.0|cloud.cc|1085}}</ref> | *[[Mutagenic fog]]: 1.3 to 2.55<ref>{{source ref|0.19.0|cloud.cc|1085}}</ref> | ||
*[[Zot trap]]: 2 to 15<ref>{{source ref|0.19.0|spl-miscast.cc|3276}}</ref> (one of many possible outcomes) | *[[Zot trap]]: 2 to 15<ref>{{source ref|0.19.0|spl-miscast.cc|3276}}</ref> (one of many possible outcomes) | ||
*[[Jiyva]] [[penance]]: 0 to 0.5 * penance<ref>{{source ref|0.19.0|godwrath.cc|1325}}</ref> (one of many possible outcomes) | *[[Jiyva]] [[penance]]: 0 to 0.5 * penance<ref>{{source ref|0.19.0|godwrath.cc|1325}}</ref> (one of many possible outcomes) | ||
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==Dissipation== | ==Dissipation== | ||
| − | Magic contamination is dissipated at the rate of 0. | + | Magic contamination is dissipated at the rate of 0.075 per turn.<ref>{{source ref|0.19.0|timed_effects.cc|709}}</ref> |
Quaffing a [[potion of cancellation]] removes 1 to 5 points of contamination.<ref>{{source ref|0.19.0|potion.cc|457}}</ref> | Quaffing a [[potion of cancellation]] removes 1 to 5 points of contamination.<ref>{{source ref|0.19.0|potion.cc|457}}</ref> | ||
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==History== | ==History== | ||
| + | *In [[0.29]], the level of contam for the light grey warning was decreased from 3.5 to 3. | ||
| + | *Prior to [[0.28]], invisibility caused contamination. | ||
*Prior to [[0.26]], magic contamination decayed much slower: -0.025 per turn instead of -0.075. Also, reading a [[scroll of blinking]] contaminated the player. | *Prior to [[0.26]], magic contamination decayed much slower: -0.025 per turn instead of -0.075. Also, reading a [[scroll of blinking]] contaminated the player. | ||
| + | *Prior to [[0.25]], [[miscast effect]]s were different and thus had different contam levels. | ||
*Prior to [[0.20]], drinking a [[potion of haste]] contaminated the player. | *Prior to [[0.20]], drinking a [[potion of haste]] contaminated the player. | ||
*Prior to [[0.19]], the light grey contamination level didn't exist. | *Prior to [[0.19]], the light grey contamination level didn't exist. | ||
Revision as of 21:32, 23 August 2022
Version 0.29: This article may not be up to date for the latest stable release of Crawl.
Magic contamination is a dangerous condition caused by miscasts and some magical effects.
Contents
Overview
Various activities cause harmful magical energies to accumulate in your body. A small amount of magical contamination (a dark or light grey "Contam" status) is mostly harmless, and will dissipate over time without any further effect. Larger amounts of accumulated magic contamination (a yellow, red, or dark red "Contam" status) will make you start to glow with magical contamination.
The glow from severe contamination (>=5) makes you easier to hit and reveals you if invisible, similar to the Corona spell. Over time you may also suffer damage and mutations.
Any amount of contamination can cause ugly things adjacent to you change their colour.
Contamination Levels
| Contam[1] | Colour[2] | Description[3] |
|---|---|---|
| >0 | Light grey | You are very lightly contaminated with residual magic. |
| 3 | Dark grey | You are lightly contaminated with residual magic. |
| 5 | Yellow | You are contaminated with residual magic. |
| 15 | Light Red | You are heavily infused with residual magic. |
| 25 | Red | You are practically glowing with residual magic! |
| 40 | Red | Your entire body has taken on an eerie glow! |
| 60 | Red | You are engulfed in a nimbus of crackling magics! |
Sources
Spells
- Disjunction: 0.75 to 1.25 per cast[4]
- Irradiate: 1.25 to 2 per cast
Miscasts
- Every miscast: Amount depends on severity etc.[5]
- Transmutations miscast: Doubles current contam
Other
- Invisibility (ego): (?)
- Removing an artefact with *Contam: 7[6]
- Mutagenic fog: 1.3 to 2.55[7]
- Zot trap: 2 to 15[8] (one of many possible outcomes)
- Jiyva penance: 0 to 0.5 * penance[9] (one of many possible outcomes)
Dissipation
Magic contamination is dissipated at the rate of 0.075 per turn.[10]
Quaffing a potion of cancellation removes 1 to 5 points of contamination.[11]
While being severely contaminated every 200 to 600 turns[12] there is contamination / 12[13] chance of a violent release of energies. Standing in a sanctuary stops this from happening.
One likely bad mutation (about 95% chance) is gained that bypasses mutation resistance. If contamination is higher than 10, there is also a damaging explosion. The damage is 3d(contamination / 2), and doubled for the non-living. Explosion size also increases with the contamination level. After the negative effects contamination is reduced by 1 to 1 + (contamination / 4)[14].
Tips & Tricks
Being in lichform, by way of Necromutation, prevents any contamination-related malmutations; instead, rot damage is incurred.
History
- In 0.29, the level of contam for the light grey warning was decreased from 3.5 to 3.
- Prior to 0.28, invisibility caused contamination.
- Prior to 0.26, magic contamination decayed much slower: -0.025 per turn instead of -0.075. Also, reading a scroll of blinking contaminated the player.
- Prior to 0.25, miscast effects were different and thus had different contam levels.
- Prior to 0.20, drinking a potion of haste contaminated the player.
- Prior to 0.19, the light grey contamination level didn't exist.
- Prior to 0.10, this effect was simply called glow, a term which ambiguously referred either to magic contamination, or to the relatively harmless glow from Sticky Flame or Corona.
References
- ↑ player.cc:4142 (0.19.0)
- ↑ status.cc:802 (0.19.0)
- ↑ player.cc:4178 (0.19.0)
- ↑ spl-transloc.cc:71 (0.19.0)
- ↑ spl-cast.cc:1532 (0.19.0)
- ↑ player-equip.cc:326 (0.19.0)
- ↑ cloud.cc:1085 (0.19.0)
- ↑ spl-miscast.cc:3276 (0.19.0)
- ↑ godwrath.cc:1325 (0.19.0)
- ↑ timed_effects.cc:709 (0.19.0)
- ↑ potion.cc:457 (0.19.0)
- ↑ timed_effects.cc:949 (0.19.0)
- ↑ timed_effects.cc:800 (0.19.0)
- ↑ timed_effects.cc:745 (0.19.0)
