The Aura is a passive modifier to units that are near the aura source, which may be a champion that has the aura thanks to an ability of his own or to an item he is holding, or an object, which can only be placed by a champion. Some auras buff allies, increasing their effectiveness in battle, while others debuff enemies, hindering their efforts on the battlefield. In almost all cases aura effects are unique, and cannot be stacked.
An exception to this rule is in the event that multiple champions are carrying an item with the same beneficial aura effect, each of those two champions will receive two instances of the aura buff: one from the item they are carrying, and a second from the aura of their ally. If a champion is near both of the champions with the same aura item, it will only receive one instance of the aura. No champion can ever receive more than two instances of a unique benevolent aura, regardless of how many nearby allies are providing the buff.
There are two types of auras:
- Global: These auras have global range and grant bonuses to the allies of the champion that carries it.
- Area of effect: This is the most common aura type, and refer to auras that will only grant bonuses or debuffs to units near the aura source. These divide themselves depending on whether they need activation or are persistent.
- Constant: These auras give bonuses to allies or debuff enemies around the carrier of the aura constantly.
- Stance: These auras give bonuses to allies for as long as the carrier has the aura-granting stance active.
- Active: These auras are active only for a few seconds after the ability that grants it is activated.
Champion abilities with an aura effect
Note: Only the aura effects of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.
Area of effect auras
Heimerdinger's 
Techmaturgical Repair Bots grants nearby allies and nearby allied 
H-28G Evolution Turret 10 / 15 / 20 / 25 / 30 health regeneration per 5 seconds. 800 range. This is a constant aura and an innate, which means that it is active from the start of the game.
Janna's Tailwind increases the movement speed of allied champions when moving towards her by 5% in a range of 1000 units. This is a constant aura and an innate, which means that it is active from the start of the game.- Jarvan IV's Demacian Standard activation allows him to place a standard on the ground near him for 8 seconds. The standard will grant 10 / 13 / 16 / 19 / 22% bonus attack speed to all nearby allies. 1200 range. This is an active ability that needs to be leveled up at least once to use.
- Lulu's Wild Growth activation grants her selected target 300 / 450 / 600 bonus health and an aura that slows nearby enemy champions by 30 / 45 / 60% for 7 seconds. This is an active ability that needs to be leveled up at least once to use.
- Sivir's rallies her allies for 8 seconds, granting all nearby allies an initial 60% Movement Speed bonus that reduces to 20% after 2 / 4 / 6 seconds. 1000 range. This is an active ability that needs to be leveled up at least once to use.
- Sona's aura require the ability to be activated for the aura to activate. Activating Sona's basic abilities creates a unique 350-radius aura that lasts 3 seconds, setting a 0.5 second cooldown on her other basic abilities. The aura's duration is extended by 0.5 seconds for every allied champion who enters its radius, up to a maximum of 5 seconds. Sona's basic abilities that work this way:
- Hymn of Valor Sona and allied champions tagged with Hymn of Valor's aura deal 20 / 30 / 40 / 50 / 60 (+ 20% AP) (+10 / 20 / 40) bonus magic damage on their next basic attack within 3 seconds.
- Aria of Perseverance Sona and allied champions tagged with Aria of Perseverance's aura are shielded for 35 / 55 / 75 / 95 / 115 (+ 20% AP) (+10 / 20 / 40) up to 1.5 seconds.
- Song of Celerity grants allied champions 10 / 11 / 12 / 13 / 14% (+ 3.5% per 100 AP) (+2% x Crescendo's rank) bonus movement speed.
- Taric's Shatter grants himself and nearby allied champions 12% of Taric's total armor. 1000 range. This is a constant aura and rankable ability that needs to be leveled up at least once to activate.
- Zilean's Heightened Learning increases experience gain of all allied champions by 8%. 1500 range. This is a constant aura and an innate, which means that it is active from the start of the game.
Items with an aura effect
Note: Items with the same aura name do not stack with each other, and only the aura on the more advanced item will be applied. This does not apply to other champions who have the same aura name, as regular aura stacking rules will be applied.
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Notes
- Sunfire Cape is not considered an item that has an aura effect because it does not apply a buff to nearby allies or debuff to nearby enemies. Sunfire Cape applies a buff only to the wearer. The passive effect is very similar of how Amumu's Despair and Dr. Mundo's Burning Agony works.
- Sivir's aura is mechanically different from all other aura, allied bonuses persist even if a buffed unit moves out of range of Sivir.
- Captain provides a buff to allies within a range of around 1100, however the bonus is listed as a passive and not an aura.
References
Template:Ability types