Ability power

Ability power (AP) is a champion statistic that increases the effectiveness of most abilities. It stacks additively.

Effects that benefit from ability power receive a bonus based on a certain percentage of a champion's current ability power. For example, if a spell deals 100 damage and a champion has 50 ability power, the spell's damage will increase by 10. In-game, spell descriptions do not display the percentage, but do display the resulting bonus; the previous example would display as 100 (+10).

Champion Abilities
Note: Only the ability power buffs of these abilities are shown here. To read more information on each of these abilities, follow the links to their champions' pages.
 * gives to Cassiopeia.
 * adds to his ability power.
 * grants him ability power for 25 seconds.
 * grants himself ability power, and grants nearby allies half of that amount.
 * passively generates souls for him to collect, with each soul collected permanently granting ability power.
 * permanently grants him 1 ability power when the ability kills a unit and passively grants him ability power when he kills a champion from any damage source.
 * grants ability power equal to.

Masteries

 * increases your champion's ability power by per champion level (up to  at level 18).
 * increases your champion's ability power by 6.
 * increases your.
 * causes your champion's basic attacks to deal bonus magic damage equal to.

Neutral buffs

 * The buff grants up to +40 ability power (among other bonuses) for 3 minutes.

Runes

 * and runes increase ability power.

Trivia
[Last updated 13/8/2015 on patch 5.15]
 * The ability with the largest is, with a maximum AP ratio of  counting initial cast of  and the target taking damage from all 45 ticks of tibbers aura damage ( per tick).
 * The second and third bounces of scale exponentially, however the low base ratio means it will not beat other spells at normal levels of AP.
 * ,, , , , , , , and have no abilities or innate effects that scale with ability power.
 * Aside from and, who may obtain theoretically infinite ability power due to the passive effects of  and  respectively, and , whose  interacts with a metagame mechanic not intended to be seen in gameplay (bonus magic resistance when disconnected), the highest attainable ability power by a playable champion is  on  thanks to her passive, . To reach this amount, she must:
 * Have maximum ranks in the, , , and masteries.
 * Be level 18 while having a full rune page of runes.
 * Possess the buff and five stacks of.
 * Have 500 stacks of passive.
 * Have a fully stacked, a , one and three fully stacked.
 * Activate the passive of at 100 charges.
 * Have consumed an.
 * Be affected by aura.


 * This combination will result in having  ability power.


 * Relevant mathematics:


 * ability power()


 * Full rune page of  runes


 * ability power(())

[Last updated 13/8/2015 on patch 5.15]
 * The highest attainable ability power by a playable champion at level 1 (without disconnecting) is  on thanks to his passive, . To reach this amount, he must:
 * Have maximum ranks in the, , , and  masteries.
 * Have 3 last points in.
 * Have a full rune page of runes.
 * Have bought a.
 * Use.
 * Be under the effect of with five enemies nearby.
 * Be under the effects of and.


 * This combination will result in having  ability power.


 * Relevant mathematics:


 * bonus magic resist
 * magic resist(())
 * ability power()

Ability power Fähigkeitsstärke Poder de habilidad Puissance Moc umiejętności 法术强度