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Ability power

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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 (+20% AP) 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).

Increasing Ability Power

Items

  • Abyssal Scepter item.png Abyssal Scepter: +70 ability power, +45 magic resistance. Unique Aura: Nearby enemy champions suffer −20 magic resistance. 2560 gold.
  • Aether Wisp item.png Aether Wisp: +30 ability power, +5% movement speed. 950 gold.
  • Amplifying Tome item.png Amplifying Tome: +20 ability power. 435 gold.
  • Archangel's Staff item.png Archangel's Staff: +60 ability power. Unique Passive – Insight: Gain ability power equal to 3% of your maximum mana. +10 mana regeneration, +250 mana. Unique Passive – Mana Charge: Each time you cast a spell or spend mana, grants +8 / 10 maximum mana (occurs up to 2 times every 8 / 6 seconds). Bonus caps at +750 bonus mana. 2700 gold.
  • Athene's Unholy Grail item.png Athene's Unholy Grail: +60 ability power, +10 mana regeneration, +25 magic resist. Unique Passive: +20% cooldown reduction Unique Passive: Restores 15% of your max mana on kill or assist, Unique Passive - Mana Font: Increases your mana regeneration by 1% per 1% mana you are missing. 2600 gold.
  • Banner of Command item.png Banner of Command: +80 ability power, 20% cooldown reduction. Unique Passive - Valor: Nearby allied minions deal 15% increased damage. Unique Active - Promote: Transforms a nearby siege minion to a more powerful unit. You gain all the gold this unit earns. 180 second cooldown. 2400 gold.
  • Blasting Wand item.png Blasting Wand: +40 ability power. 860 gold.
  • Fiendish Codex item.png Fiendish Codex: +30 ability power. Unique Passive: +10% cooldown reduction. 820 gold.
  • Frost Queen's Claim item.png Frost Queen's Claim: +50 ability power, +10 mana regeneration, +2 gold generation, 10% cooldown reduction. Unique Passive - Tribute: Your next basic attack or ability to damage a champion or tower will deal 10 bonus damage and generate 5 gold. You generate one charge of Tribute every 10 seconds, storing up to 3. Tribute is disabled for 12 seconds if you kill a minion. Unique Active - Arctic Embrace: You throw a shard of true ice that detonates at the target location, dealing 50 + (5 * level) magic damage to all enemies the missile passes through and those in the 300-radius explosion, as well as slowing them by 80% that decays over 3 seconds (60 second cooldown). You may only be in possession of 1 Gold Income item. 2200 gold.
  • Frostfang item.jpg Frostfang: +10 ability power, +5 mana regeneration, +2 gold generation. Unique Passive - Tribute: Your next basic attack or ability to damage a champion or tower will deal 10 bonus damage and generate 5 gold. You generate one charge of Tribute every 10 seconds, storing up to 3. Tribute is disabled for 12 seconds if you kill a minion. You may only be in possession of 1 Gold Income item. 865 gold.
  • Guinsoo's Rageblade item.png Guinsoo's Rageblade: +40 ability power, + 30 attack damage. Passive: Your basic attacks and spellcasts grant you 4% attack speed and 4 ability power for 8 seconds (maximum 8 stacks). Unique Passive: Falling below 50% health grants you 20% attack speed, 10% life steal and 10% spell vamp until you exit combat. 30 second cooldown. 2600 gold.
  • Haunting Guise item.png Haunting Guise: +25 ability power, +200 health. Unique Passive - Eyes of Pain: +15 magic penetration. 1485 gold.
  • Hextech Gunblade item.png Hextech Gunblade: +65 ability power, +45 attack damage, +12% life steal, Unique Passive: +20% spell vamp. Unique Passive: Your basic attacks and single target spells against champions reduce the cooldown of this item by 3 seconds. Unique Active: Deals 150 + 40% of your ability power as magic damage and slows target champion's movement speed by 40% for 2 seconds. 60 second cooldown and 700 range. 3400 gold.
  • Hextech Revolver item.png Hextech Revolver: +40 ability power. Unique Passive: +12% spell vamp. 1200 gold.
  • Iceborn Gauntlet item.png Iceborn Gauntlet: +30 ability power, +500 mana, +60 armor, +10% cooldown reduction. Unique Passive - Spellblade: After using an ability, your next basic attack deals bonus physical damage equal to 125% of your base attack damage to surrounding enemies and creates a field for 2 seconds that slows enemies inside by 30%. 1.5 second cooldown. 2900 gold.
  • Liandry's Torment item.png Liandry's Torment: +50 ability power, +300 health. Unique Passive - Eyes of Pain: +15 magic penetration. Unique Passive: Dealing spell damage applies a damage-over-time effect that deals bonus magic damage equal to 2% of the target's current Health per second for 3 seconds. This bonus damage is doubled against movement-impaired units and capped at 100 damage per second vs. monsters. 2900 gold.
  • Lich Bane item.png Lich Bane: +80 ability power, +250 mana, +5% movement speed. Unique Passive - Spellblade: After using an ability, your next basic attack deals bonus magic damage equal to 75% base AD (+ 50% AP). 1.5 second cooldown. 3000 gold.
  • Morellonomicon item.png Morellonomicon: +80 ability power, +10 mana regeneration, +20% cooldown reduction. Unique Passive: Dealing magic damage to an enemy champion below 40% health inflicts Grievous Wounds to them for 4 seconds. 2200 gold.
  • Nashor's Tooth item.png Nashor's Tooth: +60 ability power, +50% attack speed. Unique Passive: +20% cooldown reduction. Unique Passive: Basic attacks deal 15 (+15% AP) as bonus magic damage on hit. 2920 gold.
  • Rod of Ages item.png Rod of Ages: +60 ability power. Passive: You gain +2 ability power, +20 health, and +20 mana every minute / 40 seconds (maximum +20 ability power, +200 health, and +200 mana). +450 health, +450 mana. Unique Passive: On leveling up, restores 150 health and 200 mana over 8 seconds. 2800 gold.
  • Rylai's Crystal Scepter item.png Rylai's Crystal Scepter: +100 ability power, +400 health. Unique Passive: Dealing spell damage slows the target' movement speed by 35% for 1.5 seconds. (15% for multi-target and damage-over-time spells). 2900 gold.
  • Seeker's Armguard item.png Seeker's Armguard: +20 ability power, +30 armor. Unique: Killing a unit grants 0.5 bonus armor and ability power. This bonus stacks up to 30 times. 1160 gold.
  • Seraph's Embrace item.png Seraph's Embrace: +60 ability power, Unique Passive - Insight: Gain ability power equal to 3% of your maximum mana., +1000 mana, +10 mana regeneration. Unique Active - Mana Shield: Drains 20% of your current mana to shield yourself for an equal amount plus 150 for 3 seconds (120 second cooldown). 2700 gold.
  • Sheen item.png Sheen: +25 ability power, +200 mana. Unique Passive - Spellblade: After using an ability, your next basic attack deals bonus physical damage equal to your base attack damage. 1.5 second cooldown. 1200 gold.
  • Spellthief's Edge item.png Spellthief's Edge: +5 ability power, +2 mana regeneration, +2 gold generation. Unique Passive - Tribute: Your next basic attack or ability to damage a champion or tower will deal 10 bonus damage and generate 5 gold. You generate one charge of Tribute every 10 seconds, storing up to 3. Tribute is disabled for 12 seconds if you kill a minion. You may only be in possession of 1 Gold Income item. 365 gold.
  • Trinity Force item.png Trinity Force: +30 ability power, +30 attack damage, +30% attack speed, +10% critical strike chance, +250 health, +200 mana, +8% movement speed. Unique Passive - Rage: Basic attacks grant 20 movement speed for 1.5 seconds on hit. Minion, monster, and champion kills grant 60 movement speed for 2 seconds. Unique Passive - Spellblade: After using an ability, your next basic attack deals bonus physical damage equal to 200% of your base attack damage. 2 second cooldown. 3703 gold.
  • Twin Shadows item.png Twin Shadows: +80 ability power, +10% cooldown reduction, +6% movement speed. Unique Active: Hunt - Summons 2 invulnerable ghosts for 6 seconds to seek the two nearest enemy champions. If they touch an enemy champion, they slow their movement speed by 40% and reveal them for 2.5 seconds. If the ghosts fail to find a target, they attempt to return to the caster. Each ghost that successfully returns to the caster reduces the cooldown of this item by 40 / 20. 120 / 60 second cooldown. 2400 gold.
  • Void Staff item.png Void Staff: +70 ability power. Unique Passive: +35% magic penetration. 2295 gold.
  • Will of the Ancients item.png Will of the Ancients: +80 ability power, +10% cooldown reduction, +20% spell vamp. 2500 gold.

Variable Availability

  • TC Blackfire Torch item.png Blackfire Torch: +80 ability power, +10% cooldown reduction, +5% movement speed. Unique Active - Deals 20% of target champion's maximum Health in magic damage over 4 seconds and increases all subsequent magic damage taken by target by 20% (90 second cooldown). 2650 gold.
  • SH Deathfire Grasp item.png Deathfire Grasp: +120 ability power. +10% cooldown reduction. Unique Active: Deals 15% of target champion's maximum health in magic damage and amplifies all magic damage they take by 20% for 4 seconds. 90 second cooldown (750 range). 3100 gold.
  • STH Doran's Ring item.png Doran's Ring: +15 ability power, +60 health, +3 mana regeneration. Passive: Restores 4 mana when you kill an enemy unit. 400 gold.
  • SH Elixir of Brilliance item.png Elixir of Brilliance: On use, grants +25-40 ability power (based on champion level), +10% cooldown reduction for 3 minutes. 250 gold.
  • T Ichor of Illumination item.png Ichor of Illumination: Grants 30-64 ability power based on champion level, 15% cooldown reduction, and a huge boost to mana and energy regeneration for 3 minutes. 500 gold.
  • S Mejai's Soulstealer item.png Mejai's Soulstealer: +20 ability power. Unique Passive: You gain +8 ability power per stack, receiving 2 stacks for a kill or 1 stack for an assist. This effect can stack 20 times; you lose a third of your stacks if you die. At 20 stacks, you gain +15% cooldown reduction. 1235 gold.
  • SH Needlessly Large Rod item.png Needlessly Large Rod: +80 ability power. 1600 gold.
  • C Prospector's Ring item.png Prospector's Ring: +35 ability power, +6 mana regeneration. Unique Passive: +150 health (does not stack with other Prospector items). 950 gold.
  • SH Rabadon's Deathcap item.png Rabadon's Deathcap: +120 ability power. Unique Passive: Increases ability power by 30%. 3300 gold.
  • STH Spirit of the Spectral Wraith item.png Spirit of the Spectral Wraith: +40 ability power +10% cooldown reduction. Unique - Spirit Drain: Grants 2 ability power for every large monster kill (max: 15 stacks). Unique - Butcher: Against monsters, deal 30% bonus damage and restore 6% of damage dealt to monsters as health and 3% as mana. Unique - Conservation: You generate Conservation stacks every 1.5 seconds, up to 80. Killing a large monster will consume up to 40 stacks and grant 1 bonus gold per stack consumed. Unique - Gold Income: You may only be in possession of 1 Gold Income item. 2000 gold..
  • TC Wooglet's Witchcap item.png Wooglet's Witchcap: +100 ability power. Unique Passive: Increases ability power by 25%. +40 armor. Unique Active: Places your champion into stasis for 2.5 seconds, rendering you invulnerable and untargetable but unable to take any action. 90 second cooldown. 3500 gold.
  • SH Zhonya's Hourglass item.png Zhonya's Hourglass: +120 ability power, +50 armor. Unique Active - Stasis: For 2.5 seconds, you are invulnerable and untargetable but cannot take any actions. 90 second cooldown. 3260 gold.

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.

  • GalioSquare.png Galio's Runic Skin.png Runic Skin adds 50% of his total magic resistance to his bonus ability power.
  • SingedSquare.png Singed's Insanity Potion.png Insanity Potion grants him 35 / 50 / 65 ability power for 25 seconds.
  • TaricSquare.png Taric's Radiance.png Radiance grants himself 30 / 50 / 70 ability power, and grants nearby allies half of that amount.
  • ThreshSquare.png Thresh's Damnation.png Damnation passively generates souls for him to collect, with each soul collected permanently granting 0.75 ability power.
  • VeigarSquare.png Veigar's Baleful Strike.png Baleful Strike permanently grants him 1 ability power when the ability kills a unit and passively grants him 1 / 2 / 3 / 4 / 5 ability power when he kills a champion from any damage source.
  • ViktorSquare.png Viktor's Evolving Technology.png Evolving Technology grants him 3 ability power per level.
  • ViktorSquare.png Viktor's Augment- Death item.png Augment: Death grants him 45 ability power.
  • VladimirSquare.png Vladimir's Crimson Pact.png Crimson Pact grants him 1 ability power per 40 bonus health.

Masteries

  • Mental Force mastery s4.png Mental Force increases your champion's ability power by 0.33 / 0.61 / 0.89 per champion level (6 / 11 / 16 at level 18).
  • Arcane Mastery mastery s4.png Arcane Mastery increases your champion's ability power by 6.
  • Archmage mastery s4.png Archmage increases your champion's ability power by 2 / 3.5 / 5% per rank.
  • Arcane Blade mastery s4.png Arcane Blade causes your champion's basic attacks to deal bonus magic damage equal to 5% of your Ability Power.

Neutral buffs

Runes

Name Type Tier 1 (Lesser) Tier 2 (Normal) Tier 3 (Greater)
Ability Power Mark Marks (2) 0.33

30 IP

0.46

165 IP

0.59

410 IP

Seal Seals (3) 0.33

30 IP

0.46

165 IP

0.59

410 IP

Glyph GGlyphs (3) 0.66

30 IP

0.92

165 IP

1.19

410 IP

Quintessence Quintessences (3) 2.75

80 IP

3.85

410 IP

4.95

1025 IP

Ability Power, Scaling

(Ability power per level)

Mark Marks (4) 0.06 per level (1.08)

30 IP

0.08 per level (1.44)

165 IP

0.10 per level (1.80)

410 IP

Seal Seals (2) 0.06 per level (1.08)

30 IP

0.08 per level (1.44)

165 IP

0.10 per level (1.80)

410 IP

Glyph GGlyphs (4) 0.10 per level (1.80)

30 IP

0.13 per level (2.34)

165 IP

0.17 per level (3.06)

410 IP

Quintessence Quintessences (4) 0.24 per level (4.32)

80 IP

0.34 per level (6.12)

410 IP

0.43 per level (7.74)

1025 IP

Trivia

  • The ability with the largest AP ratio is AnnieSquare.png Annie's Summon- Tibbers.png Summon: Tibbers, with a maximum AP ratio of 9.8 counting initial cast and the target taking damage from all 45 ticks of tibbers aura damage.
  • The second and third bounces of NamiSquare.png Nami's Ebb and Flow.png Ebb and Flow scale exponentially, however the low base ratio means it will not beat other spells at normal levels of AP.
  • DariusSquare.png Darius, DravenSquare.png Draven, GarenSquare.png Garen, OlafSquare.png Olaf, RivenSquare.png Riven, TalonSquare.png Talon, VayneSquare.png Vayne, and ZedSquare.png Zed have no abilities or innate effects that scale with ability power.
This combination will result in MordekaiserSquare.png Mordekaiser having 1729.886... AP. The KassadinSquare.png Kassadin ghost spawned will have 2733.424... AP, though his abilities cannot be used.
Relevant mathematics:
KassadinSquare.png Kassadin AP = (180 + 120 × 4 + 138.435 + 83.16 + 16 + 6 + 40 + 35) × (1.3 × 1.05) = 1335.782175
MordekaiserSquare.png Mordekaiser AP = (180 + 120 × 5 + 83.16 + 16 + 6 + 40 + 40 + 35 + (1335.782175 × 0.2)) × (1.3 × 1.05) = 1729.8869338
KassadinSquare.png Kassadin ghost AP = 1335.782175 + (1365.2184 × 0.75 × (1.3 × 1.05) = 2733.424512

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