Magic contamination - Revision history

Draconius: Clarify line

2026-07-10T11:35:08Z

Clarify line

Draconius: .34 Page Cleanup

2026-07-08T08:50:41Z

.34 Page Cleanup

Draconius: .34 update (WIP)

2026-07-08T04:33:58Z

.34 update (WIP)

Draconius: Needs major update for .34

2026-07-06T09:59:20Z

Needs major update for .34

Ge0ff at 19:03, 27 July 2023

2023-07-27T19:03:46Z

Hordes: /* History */

2023-07-25T22:27:37Z

‎History

Ge0ff: /* Spell Miscasts */

2023-04-19T13:10:44Z

‎Spell Miscasts

Ge0ff: /* Other */

2023-04-19T13:09:23Z

‎Other

Pinkbeast: /* Dissipation */ This figure predates the 1000x multiplication of all contam arithmetic.

2023-02-14T22:12:41Z

‎Dissipation: This figure predates the 1000x multiplication of all contam arithmetic.

Hordes: /* Spells */

2022-10-29T20:51:22Z

‎Spells

@@ Line 44: / Line 44: @@
 ===Other===
 *Removing an [[Artefact]] with *Contam: 1200
-*Removing an [[Artefact]] with [[Distortion]] brand: 3000
+*Removing a weapon with [[Distortion]] brand: 3000 (25% chance)
 *Removing the [[Plutonium Sword]]: 700-1350
 *[[Mutagenic fog]]: 250-500 per turn

@@ Line 1: / Line 1: @@
 {{version034}}
 '''Magic contamination''' is a dangerous condition caused by miscasts and some magical effects.
 ==Overview==
-Various activities cause harmful magical energies to accumulate in your body. A small amount of magical contamination (a grey "% Contam" status) are harmless, and will dissipate over time without any further effect. Larger amounts of accumulated magic contamination (a yellow or red "Contam" status) will make you start to [[glow]] with magical contamination. Contamination is reported as a percent out of 300% maximum, internally tracked as 0-3000 points of contamination.
+Various activities cause harmful magical energies to accumulate in your body. A small amount of magical contamination (a grey "% Contam" status) is harmless and will dissipate over time without any further effect. Larger amounts of accumulated magic contamination (a yellow or red "Contam" status) will make you start to [[Glow]] with magical contamination. Contamination is reported as a percent out of 300% maximum, internally tracked as 0-3000 points of contamination.
-Being at a severe contamination level makes you easier to hit and reveals you if [[invisible]], similar to the [[Corona]] spell. It also lowers stealth and puts you at risk of bad [[mutation]]s and damaging explosions.
+Being at a severe contamination level makes you easier to hit and reveals you if [[Invisible]], similar to the [[Corona]] spell. It also lowers stealth and puts you at risk of [[Bad mutations]] and damaging explosions. The chance of exploding scales with contamination severity. Damage scales with player [[XL]]. Explosions at 200%+ contamination have increased radius and damage. When this happens, a mutation check will occur with a 1 in 5 chance of a single bad mutation or random [[Mutation]] (this is heavily weighted toward bad mutation outcomes). <!--if (x_chance_in_y(min(2000, you.magic_contamination), 3200-->
-Any amount of contamination can cause [[ugly thing]]s adjacent to you to change their colour.
+Any amount of contamination can cause [[Ugly thing]]s adjacent to you to change their colour.
 ==Contamination Levels==
 {| class="wikitable"
 |-
-! Contam<ref>{{source ref|0.29.0|player.cc|3959}}</ref>
+! Contam
-! Colour<ref>{{source ref|0.29.0|status.cc|809}}</ref>
+! Colour
-! Description<ref>{{source ref|0.29.0|player.cc|3995}}</ref>
+! Description
 |-
-| 0-1000
+| 0-999 (0-99%)
 | Grey
 | You are very lightly contaminated with residual magic.
 |-
-| 1000-2000
+| 1000-1999 (100-199%)
 | Yellow
-| You are dangerously contaminated with residual magic. You are extremely contaminated with residual magic.
+| You are dangerously contaminated with residual magic. (Explosions up to 27 damage at XL 27)
 |-
-| 2000-3000
+| 2000-2999 (200-299%)
 | Red
-| You are completely saturated with residual magic!
+| You are extremely contaminated with residual magic. (Explosions up to 33 damage at XL 27)
 |}
 ==Sources==
 ===Spells===
-*[[Irradiate]]: 185-400 per cast<ref>{{source ref|0.29.0|spl-cast.cc|1949}}</ref>.
+*[[Irradiate]]: 185-400 per cast.
-**When a player is hit ''by'' Irradiate: 400-600 <ref>{{source ref|0.29.0|spl-damage.cc|1839}}</ref>
+**When a player is hit ''by'' Irradiate: 400-600.
 ===Spell Miscasts===
-*Every [[miscast]]: Depends on the miscast severity. See [[Miscast effect#Effects|Miscast effect]] for more information.
+*Every [[Miscast]]: Depends on the miscast severity. See [[Miscast effect#Effects|Miscast effect]] for more information.
 ===Other===
-*Removing an [[artefact]] with *Contam: 1200
+*Removing an [[Artefact]] with *Contam: 1200
-*Removing an [[artefact]] with [[Distortion]] brand: 3000
+*Removing an [[Artefact]] with [[Distortion]] brand: 3000
 *Removing the [[Plutonium Sword]]: 700-1350
 *[[Mutagenic fog]]: 250-500 per turn
 *[[Zot trap]]: 1500 - 3000 (one of many possible outcomes)
-*[[Jiyva]] [[penance]]: 0 - <code>100 * penance</code> (one of many possible outcomes)
+*[[Jiyva]] [[Penance]]: 0 - <code>100 * penance</code> (one of many possible outcomes)
 ==Dissipation==
-Magic contamination begins to dissipate after 7 turns at the rate of 20 per turn. Quaffing a [[potion of cancellation]] instantly removes <code>-1 * (250-1000)</code> points of contamination.
+Magic contamination begins to dissipate after 7 turns at the rate of 20 per turn. Quaffing a [[Potion of cancellation]] instantly removes <code>-1 * (250-1000)</code> points of contamination.
 ==Tips & Tricks==
@@ Line 57: / Line 58: @@
 [[Amulet of dissipation]] will increase the rate at which contamination is resolved, thus reducing the number of bad outcomes.
-==Major Changes From Versions Prior To [[0.34]]==
+==Summary of Major Changes in [[0.34]] Compared to Prior Versions==
 *Contam has been rescaled internally. 1000 is now the start of yellow, 2000 the start of red, and 3000 the absolute cap.
-*Contam decays faster, but does not start to decay until 7 turns have  passed since contam was last gained.
+*Contam decays faster, but does not start to decay until 7 turns have passed since contam was last gained.
 *Low yellow is somewhat more dangerous than before and the difference between low/high has been narrowed. Very high levels of contam are worse than before (the mid-range is similar to the prior state).
 *Being invisible no longer prevents all contam decay.
@@ Line 65: / Line 68: @@
 *Contam explosions are possible at lower levels of contam than before, do significantly more damage (and ignore the player's AC), are non-elemental, and their base damage is based on the player's XL rather than the amount of contam. Yellow-tier explosions are radius 1, red are radius 2 and do more damage than yellow.
 *Contam mutations no longer have a 50% chance to ignore rMut (along with a few other narrow interactions with mutation conflicts due to counting as 'forced'). This seems unnecessary, with rMut being both weaker and far rarer than when this system was first designed.
-*Contam is now listed as a percentage on the UI, while contaminated (near the Doom indicator). Yellow is 100% (ie: the start of actual negative gameplay effects), red is 200%, and the cap is 300%. While the specific number is admittedly unimportant for minor contam, it helps make the difference between low/high transparent to the player, and critically: allows contam-costing spells to be transparent about what their risks are in the current moment.
+*Contam is now listed as a percentage on the UI, while contaminated (near the Doom indicator). Yellow is 100% (ie: the start of actual negative gameplay effects), red is 200%, and the cap is 300%. While the specific number is admittedly unimportant for minor contam, it helps make the difference between low/high transparent to the player, and critically, allows contamination-costing spells to be more transparent about what their risks are in the current moment.
 *Contam is only shown on the status line once you have enough for it to have gameplay impact (ie: yellow or worse).
 ==History==
-*In [[0.34]], a major rework of the contamination system to clarify and simplify. All contam-inflicting things have been adjusted in light of these changes. The average number of mutations gained "should remain similar" to the old version. [https://github.com/crawl/crawl/commit/dccffc7fa4ce6812bcddfe120a9abada2403a30a#diff-5b0c342588db7600c32c8c225b9bc1ecc96df9a84ece59afbca214ea1b44d128R818 GitHub ref]
+*In [[0.34]], a major rework of contamination system to clarify and simplify. All contam-inflicting things have been adjusted. The average number of mutations gained "should remain similar" to the old version. [https://github.com/crawl/crawl/commit/dccffc7fa4ce GitHub ref]
 *Prior to [[0.29]], the contamination level for the light grey warning was 3500 instead of 3000. This change was enacted to match [[Irradiate]], which had its contamination increased in this version.
 *Prior to [[0.28]], the [[Orb of Zot]] extended contamination.
@@ Line 81: / Line 84: @@
 *Prior to [[0.26]], casting [[Controlled Blink]] or reading a [[scroll of blinking]] contaminated the player.
 *Prior to [[0.20]], drinking a [[potion of haste]] contaminated the player, and the [[haste]] effect caused contamination over time.
 [[Category:Magic]]
 [[Category:Game mechanics]]
 [[Category:Status effects]]

@@ Line 1: / Line 1: @@
-{{version029}}
+{{version034}}
-{{Stub}}<!--Player contamination has been heavily adjusted.
+{{Stub}}
 '''Magic contamination''' is a dangerous condition caused by miscasts and some magical effects.
 ==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.
+Various activities cause harmful magical energies to accumulate in your body. A small amount of magical contamination (a grey "% Contam" status) are harmless, and will dissipate over time without any further effect. Larger amounts of accumulated magic contamination (a yellow or red "Contam" status) will make you start to [[glow]] with magical contamination. Contamination is reported as a percent out of 300% maximum, internally tracked as 0-3000 points of contamination.
-Contamination over 5000 points is considered severe. Being at a severe contamination level makes you easier to hit and reveals you if [[invisible]], similar to the [[Corona]] spell. It also leaves you at risk to bad [[mutation]]s and damaging explosions.
+Being at a severe contamination level makes you easier to hit and reveals you if [[invisible]], similar to the [[Corona]] spell. It also lowers stealth and puts you at risk of bad [[mutation]]s and damaging explosions.
-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 to change their colour.
 ==Contamination Levels==
@@ Line 28: / Line 18: @@
 ! Description<ref>{{source ref|0.29.0|player.cc|3995}}</ref>
 |-
-| >0
+| 0-1000
-| Dark grey
+| Grey
 | You are very lightly contaminated with residual magic.
 |-
-| 3000
+| 1000-2000
 | Yellow
-| You are contaminated with residual magic.
+| You are dangerously contaminated with residual magic. You are extremely contaminated with residual magic.
 |-
-| 15000
+| 2000-3000
 | Red
-| You are practically glowing with residual magic!
+| You are completely saturated with residual magic!
 |}
 ==Sources==
 ===Spells===
-*[[Irradiate]]: 1250 - 2000 per cast<ref>{{source ref|0.29.0|spl-cast.cc|1949}}</ref>.
+*[[Irradiate]]: 185-400 per cast<ref>{{source ref|0.29.0|spl-cast.cc|1949}}</ref>.
-**When a player is hit ''by'' Irradiate: 2000-3000 <ref>{{source ref|0.29.0|spl-damage.cc|1839}}</ref>
+**When a player is hit ''by'' Irradiate: 400-600 <ref>{{source ref|0.29.0|spl-damage.cc|1839}}</ref>
 ===Spell Miscasts===
 *Every [[miscast]]: Depends on the miscast severity. See [[Miscast effect#Effects|Miscast effect]] for more information.
 ===Other===
-*[[Invisibility (ego)]]: 1000-1500 per successful use <ref>{{source ref|0.29.0|ability.cc|2674}}</ref>
+*Removing an [[artefact]] with *Contam: 1200
-*Removing an [[artefact]] with *Contam: 7000<ref>{{source ref|0.29.0|player-equip.cc|389}}</ref>
+*Removing an [[artefact]] with [[Distortion]] brand: 3000
-*[[Mutagenic fog]]: 1300 - 2550<ref>{{source ref|0.29.0|cloud.cc|1165}}</ref>
+*Removing the [[Plutonium Sword]]: 700-1350
-*[[Zot trap]]: 7000 - 20000 (one of many possible outcomes)<ref>{{source ref|0.29.0|traps.cc|414}}</ref>
+*[[Mutagenic fog]]: 250-500 per turn
-*[[Jiyva]] [[penance]]: 0 - <code>500 * penance</code> (one of many possible outcomes)<ref>{{source ref|0.29.0|god-wrath.cc|L1233}}</ref>
+*[[Zot trap]]: 1500 - 3000 (one of many possible outcomes)
 ==Dissipation==
-Magic contamination is dissipated at the rate of 75 per turn.<ref>{{source ref|0.28.0|timed-effects.cc|108}}</ref> Quaffing a [[potion of cancellation]] instantly removes 1000 - 5000 points of contamination.
+Magic contamination begins to dissipate after 7 turns at the rate of 20 per turn. Quaffing a [[potion of cancellation]] instantly removes <code>-1 * (250-1000)</code> points of contamination.
-While being severely contaminated every 70 - 200 turns<ref>{{source ref|0.29.0|timed-effects.cc|257}}</ref> there is <code>contamination / 12000</code><ref>{{source ref|0.29.0|timed-effects.cc|117}}</ref> chance of a violent release of energies. Standing in [[Zin]]'s Sanctuary stops this from happening.
+==Tips & Tricks==
-One likely bad mutation (about 95% chance) is gained that bypasses [[mutation resistance]]. If contamination is higher than 10,000, there is also a damaging explosion. The damage is <code>3d(contamination / 2000)</code>, and doubled for the non-living. Explosion size also increases with the contamination level. After the negative effects, contamination is reduced by 1000 - <code>1000 + contamination / 4</code><ref>{{source ref|0.29.0|timed-effects.cc|74}}</ref>.
+[[Amulet of dissipation]] will increase the rate at which contamination is resolved, thus reducing the number of bad outcomes.
-==Tips & Tricks==
+==Major Changes From Versions Prior To [[0.34]]==
-Being in lichform, by way of [[Necromutation]], prevents any contamination-related malmutations; instead, your [[stat]]s temporarily rot.
+*Contam has been rescaled internally. 1000 is now the start of yellow, 2000 the start of red, and 3000 the absolute cap.
 ==History==
 *Prior to [[0.29]], the contamination level for the light grey warning was 3500 instead of 3000. This change was enacted to match [[Irradiate]], which had its contamination increased in this version.
 *Prior to [[0.28]], the [[Orb of Zot]] extended contamination.

← Older revision		Revision as of 09:59, 6 July 2026
Line 1:		Line 1:
	{{version029}}		{{version029}}
		+	{{Stub}}<!--Player contamination has been heavily adjusted.
		+	*The exact amount one is contaminated is now indicated as a percentage in the
		+	sidebar. Harmful effects begin at 100% and cap at 300%.
		+	*Crossing the 100% threshold is more likely to result in a bad mutation than
		+	before (but very high amounts are less dangerous). Mutations gained this
		+	way no longer ignore rMut.
		+	*Explosions from contamination are now possible at a lower threshold, ignore
		+	AC, and are more damaging. Their potential damage can be seen on the %
		+	screen.
		+	*Many existing effects have been rescaled to be similarly dangerous as before
		+	this change.-->
		+
	'''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.

@@ Line 72: / Line 72: @@
 ==History==
-*Prior to [[0.29]], the contain for the light grey warning was 3500 instead of 3000. This change was enacted to match [[Irradiate]], which had its contamination increased in this version.
+*Prior to [[0.29]], the contamination level for the light grey warning was 3500 instead of 3000. This change was enacted to match [[Irradiate]], which had its contamination increased in this version.
 *Prior to [[0.28]], the [[Orb of Zot]] extended contamination.
 *Prior to [[0.26]], magic contamination decayed much slower: -25 per turn instead of -75, while the time between bad effects was also slower (200 - 600 turns).

@@ Line 51: / Line 51: @@
 ===Spell Miscasts===
-*Every [[miscast]]: Depends on the miscast severity. See [[Miscast effect#Effects]] for more information.
+*Every [[miscast]]: Depends on the miscast severity. See [[Miscast effect#Effects|Miscast effect]] for more information.
-*[[Transmutations]] miscast: Doubles current contam
+*[[Transmutations]] miscast: Doubles current contamination
 ===Other===