Aura

Auras are persistent area of effect skills that surround a person or creature with some radius and grant their effects to allies and/or enemies within that radius (the aura's area of effect). This mechanic is widely used throughout the game.

Mechanics

Being a subset of buff/debuff system, auras inherit all characteristics from them and are affected by buff modifiers. They can be temporary or permanent, positive or negative, and so on. Auras can only update their affected targets every 250ms.

Sources of auras:

• Skill gems
• Passive skills
• Monster modifiers and skills
• Elemental proliferation
• Item skills, such as Death's Oath
• Modifiers from unique items, such as Dying Breath

Mana reservation

Auras are cast by reserving mana to maintain their effects. Mana reservation sets aside a portion of mana as unusable for as long as the skill is active. Having mana reserved does not reduce the rate of mana regeneration, so it will reduce the time taken for mana to regenerate to its (temporary) maximum.

Reserved mana values are multiplied by support gem mana cost multipliers as usual. The Blood Magic passive will cause life to be reserved instead of mana. The Inspiration Support gem does not reduce the mana reserved by an aura. Passives and items that reduce mana reserved do so multiplicatively; having a combined 20% Reduced Mana reserved reduces the cost of Discipline from 35% mana reserved to 28% mana reserved, not 15%.

Player auras

All allies within the area of a player's aura skill will receive the aura's buff. The magnitude of that buff is determined by the Aura generator's Increased Effect of Auras stat. However, that stat has no effect on the strength of an Aura received from someone. Passive and item modifiers can further enhance the effects received from an aura.

For example, Player A is generating a Level 20 Discipline aura; granting everyone inside the aura 303 Energy Shield. Player A also has +25% Increased Effect of Non-Curse Auras, thereby increasing the amount of Energy Shield to 379. Player A has no increases to Energy Shield, so they will only see an increase of 379 Energy Shield. Player B has +100% Increased Maximum Energy Shield and stands inside Player A's aura, thus Player B sees an increase of 758 Energy Shield. Player B's own "Increased Effect of Auras" stat has no bearing on the effect of the Discipline received from Player A.

The passive tree can provide 69% aura effect, though it requires heavy point investment. The Champion Duelist class can have an additional 20% effect, the Guardian Templar class can have an additional 10% effect, and the Necromancer Witch class an additional 5%. Conqueror's Potency can provide another 3% effect. Through the use of Victario's Influence with its lvl 30 Generosity Support and up to 15% increased effect mod, an additional 64% increased aura effect can be obtained. However, supported auras will not affect you. If the player equips a Dying Breath, an additional 18% effect can be achieved at the cost of a shield (such as Prism Guardian) and weapon (such as Advancing Fortress or Ephemeral Edge). Additionally, the player can equip The Jinxed Juju amulet for up to an additional 15% increased effect. There is also a type of Medium Cluster Jewel that grants aura effect.

There is no limit to the number of auras a player can cast, so long as they have the resources to maintain them. However, a player cannot cast multiple copies of the same aura upon themself (such as multiple Discipline auras in an attempt to get a very strong Energy Shield boost); the different copies will simply replace each other.

Auras effects that originate from items or passive skills will not be affected by aura modifying effects.

Note: Tooltip values only show the base aura effects; they do not show modified aura effects.

Curse auras

With the use of the Blasphemy Support gem, any curse gem may be converted into an aura, thereby reserving mana to maintain a persistent curse effect around the player. Enemies who enter the Blasphemy aura are then cursed with the supported curse skill(s). Blasphemy auras are affected by both Curse and Aura Area of Effect increases. Most Aura effect increases specify that they only apply to non-curse auras, so they will have no effect on curse auras. Curse effect increases will function normally on curse auras.

Reduced Mana reserved modifiers affect Blasphemy auras in the same way as other auras; likewise, Reduced mana cost has no effect on Blasphemy auras. All Blasphemy auras reserve the same base amount of mana: 35%.

Curses applied via Blasphemy count towards the active curse limit. Curse auras also take priority over curses applied via casting, and will override those curses if they exceed the curse limit.

Note: Tooltip values only show the base curse effects; they do not show modified curse effects.

Banners

Banners are a sub-group of aura skills. Banners provide an aura effect while active and can gain stages in this state under certain conditions, collecting up to 50 stages. Using the banner skill again will deactivate the aura and place the banner at your current location, which provides the aura effect around it, plus an additional effect based on the number of stages collected. Activating the banner skill while the banner is placed will despawn the placed banner.

You can only have one Banner skill active at a time.

Mines

Most mine skills give mines an aura around each mine, affecting nearby enemies. Auras from multiple mines can stack. Auras from mines are affected by aura effect modifiers.

Support gem combinations

Auras themselves do not do damage. They provide a buff which can add extra damage, extra defenses, or utility. As with curses, added damage support gems have no effect on linked Aura skills. These support gems will affect auras:

• Arrogance Support - This will cause linked auras to reserve health instead of mana, but increase the cost by the mana multiplier. Note that "reduced mana cost" from increases in quality have no effect on mana reservation.

• Spell Totem Support - Casts a totem which will maintain the aura. The cost to cast the totem is the mana that would be reserved multiplied by the Mana Cost Multiplier of the Totem support and any other linked support gems.

• Generosity Support - Increases the effect of the non-curse auras on allies (including minions) but prevents them from affecting the player.

• Increased Area of Effect Support - Further increases the Area of Effect of the Aura, but increases the Mana reservation by the gem's multiplier.

• Concentrated Effect Support - Lessens area of effect and applies the mana cost mulitplier, but does not provide a bonus to aura damage, as auras cannot directly cause damage. An exception would be the aura from Death's Oath.

• Enlighten Support - Reduces the mana reserved of the aura by the amount of the mana multiplier.

• Empower Support - Adds levels to supported auras, but increases their cost by the mana multiplier.

• Enhance Support - Increases the quality of the gem, granting increased area of effect, but at increased mana cost. Note that

• Inspiration Support does not affect reservation, but does affect auras supported by Spell Totem Support.