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'''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. They have the following effects:
*Negate [[invisibility]] of anything within the aura.
*Divides the [[stealth]] of all beings within the aura by roughly 2.5.
*Causes all hostiles within the aura to glow, as though affected by [[Corona]].

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 the [[Mace of Brilliance]] receive a small halo.
*All [[List of holy monsters|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 [[seraph]]im and [[ophan]]im have extremely large halos.

===Umbra===
The opposite of a halo, umbras emanate forth from unholy angelic beings. They have the following effects:
*Double stealth of all beings within the aura.
*Reduces the accuracy of all within the aura (except for [[demon]]s, the [[undead]], and [[Yredelemnul]] worshipers).
*Negates the effect of any halo they overlap with.
*Allows use of [[Dithmenos]]' shadow step ability.

Sources:
*[[Profane servitor]]s have a large umbra.
*Wearers of the [[ring of Shadows]] have a medium umbra.
*Worshipers of Dithmenos receive an umbra with ranged based on piety (very small to your entire line of sight)

===[[Ring of Flames]]===
Ring of Flames auras emanate one tile all around their source, creating [[cloud]]s of flame all around you. These clouds linger for a few turns even after the source moves away. The aura has the following effects:
*Negate any [[Ice Magic]] that strikes the clouds.
*Deals [[fire]] damage to anything standing in the clouds (but does not injure the source).
*''Player version only'': Increases the [[spell power]] of [[Fire Magic]], provides 2 ranks of fire resistance and 2 ranks of cold [[vulnerability]].

Sources:
*Players can cast the [[Ring of Flames]] spell to temporarily gain this aura.
*[[Asmodeus]] has a permanent Ring of Flames aura surrounding him.

===[[Tornado]]===
Tornado auras emanate out from certain rare monsters and players with access to very powerful [[Air Magic]]. They have the following effects:
*Deals heavy wind damage to everything (except the source) within the aura.
*Moves all affected targets (monsters, items, clouds, etc.) counterclockwise around the source each turn.

Sources:
*Players can cast the [[Tornado]] spell to temporarily gain this aura.
*[[Diamond obelisk]]s and [[twister]]s have permanent Tornado auras surrounding them.

===[[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:
*Casting spells
*Reading [[scroll]]s
*Directing allies
*Shouting
*Invocable [[ability|abilities]] (evocable ones remain unaffected)

All [[demon]]s and [[:Category:Silence Immune|some other creatures]] can ignore the effects of silence.

Sources:
*Players can cast the [[Silence]] spell or use a [[scroll of silence]] to temporarily gain this aura.
*[[Mennas]] can cast Silence.
*[[Silent spectre]]s have permanent, 12-tile auras of silence.

===[[Powered By Death]]===
When active, a Powered By Death aura will increase your character's [[regeneration rate]] by 100 for each [[corpse]] within its range, which rises with each mutation rank. This also decomposes all affected corpses slightly faster.

Source:
*Some [[demonspawn]] characters will develop this mutation as they gain levels.

==History==
[[Suppression]] auras were added in [[0.12]], and removed in [[0.14]].