Aura

Version 0.32: This article is up to date for the latest stable release of Dungeon Crawl Stone Soup.

Auras are passive abilities that emanate out of certain characters and monsters, affecting anything that comes within their range. The exact effect this has varies by aura.

Halo

Halo auras emanate forth from certain holy weapons, monsters, and characters. It has the following effects:

• Negates invisibility of anything inside.
• Makes everything inside easier to hit. Attackers gain 1 + 1d8 to-hit against anything inside. However, when players emit a halo, they aren't any easier to hit.
• Players have their stealth reduced by a factor of x40%.
• Negates the effect of any umbra they overlap with.

Sources:

• Worshipers of the Shining One receive a halo with range based on piety (very small to nearly your entire line of sight)
• Characters wielding an orb of light or the unrand artifact morningstar Eos receive a medium halo.
• Wu Jian's Heavenly Storm causes a 2-tile halo for its duration.
• Many holy monsters have halos, the size of which depends on the monster in question. Weaker creatures like holy swine have tiny halos while powerful creatures like seraphim and ophanim have extremely large halos.

Umbra

The opposite of a halo, umbras emanate forth from unholy angelic beings. It has the following effects:

• Reduces the accuracy of all within the aura. Worshippers of Yredelemnul are immune to this effect.
• Increases stealth (players only).
• Negates the effect of any halo they overlap with.

Sources:

• Profane servitors have a large umbra.
• Equipping the ring of Shadows or Brilliance grants a 3-tile umbra.
• Worshipers of Yredelemnul receive an umbra with range based on piety.

Status effect

Some monsters emanate an aura that buffs nearby enemies or debuffs the player while in sight. Like other auras, these cannot be disabled and are not casted from any spells, and are instead constantly applied as long as the source is alive (and usually immediately end when the source dies or cannot see the target).

Sources:

• w Torpor snail - Inflicts slow to all nearby enemies.
• v Polterguardian - Grants repel missiles to all nearby allies.
• G Glowing orange brain - Grants brilliance to all nearby allies that cast spells.
• G Ophan - Inflicts the Sentinel's Mark against the player.
• W Martyred shade - Grants an Injury Bond to all nearby allies.

Silence

When Silence auras emanate from a monster or the player, most creatures within the aura lose the ability to make any noise, including speech. This prevents:

• Reading scrolls.
• Casting spells (all spells for the player).
• Using divine abilities.
• Shouting.

Monsters are unable to use spells/abilities with the "Wizard", "Divine", or "Vocal" spell slot flags. Monsters can use "Magical" or "Natural" abilities in silence (most demons use "Magical" abilities, for instance).

When players emit the aura, their stealth is reduced by 50.

Sources:

• Players can cast the Silence spell or use a scroll of silence to temporarily gain this aura.

The following enemies cast Silence:

• & Ereshkigal
• A Mennas

The following enemies may be able to cast Silence, depending on their spell set:

• & Pandemonium lord (7.5% chance)

The following enemy inherently radiates Silence:

• W Silent spectre (as a permanent 12-tile aura, whether awake or dormant)

Ring of clouds

Certain monsters and items generate a ring of clouds around themselves. The specific cloud created depends on the source, but is always harmful (to others).

Sources:

• The Salamander Hide Armour - Flame clouds.
• z Weeping skull - Sparse clouds of excruciating misery.
• C Tainted leviathan - Miasma clouds.
• & Pandemonium lord - Possible thunder, flame, freezing, excruciating misery, seething chaos, acid, miasma, or mutagenic clouds. See Pandemonium lord#Cloud rings for more details.
• d Bai Suzhen - Thunder clouds (when in her dragon form).
• & Asmodeus - Flame clouds.

History

• In 0.33, apises will be given an aura which increases the health of nearby monsters, and ironbound beastmasters will be re-added with an aura that hastes nearby monsters of animal or brainless intelligence.
• Prior to 0.32, worshipping Dithmenos gave the player an umbra. This was moved to Yredelemnul. Also, glowing orange brains were given their brilliance aura, ophanim were given their marking aura, polterguardians were added with their repel missiles aura and martyred shades were added with their injury bond aura. Brilliance did not have an umbra.
• Prior to 0.19, Powered by Death gave regeneration from nearby corpses, relying on an aura to do so.
• The Moth of suppression and Suppression auras were added in 0.12, and removed in 0.14.