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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, +50 magic resistance. Unique Aura: Reduces the magic resistance of nearby enemies by 20. 2350 Gold.
  • Aether Wisp item.png Aether Wisp: +30 ability power. Unique Passive: +5% movement speed. 850 Gold.
  • Amplifying Tome item.png Amplifying Tome: +20 ability power. 435 Gold.
  • Archangel's Staff item.png Archangel's Staff: +80 ability power. Unique Passive – Insight: Grants (3% of your maximum mana) ability power. +250 mana, +50% base mana regeneration. 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). Transforms into Seraph's Embrace item.png Seraph's Embrace at +750 mana. 3100 Gold.
  • Ardent Censer item.png Ardent Censer: +40 ability power, +100% base mana regeneration, +10% cooldown reduction. Unique Passive: +8% movement speed. Unique Passive: Your heals and shields on another unit grant them 15% attack speed and 30 magic damage on-hit for 6 seconds. This does not include regeneration effects or effects on yourself. 2200 Gold.
  • Athene's Unholy Grail item.png Athene's Unholy Grail: +60 ability power, +25 magic resist, +20% cooldown reduction, +100% base mana regeneration. Unique Passive: Restores 30% of your maximum mana on kill or assist. Unique Passive – Mana Font: Restores 2% of missing mana every 5 seconds. 2800 Gold.
  • Banner of Command item.png Banner of Command: +60 ability power, +200 health, +20 magic resist, +100% base health regeneration, +10% cooldown reduction. Unique Aura – Legion: Grants nearby allies +15 magic resist. Unique Active – Promote: Greatly increases the power of a lane minion and grants it immunity to magic damage (120 second cooldown). 2900 Gold.
  • Blasting Wand item.png Blasting Wand: +40 ability power. 850 Gold.
  • Elixir of Sorcery item.png Elixir of Sorcery: +50 ability power, +15 bonus mana regen, Sorcery for 3 minutes. Sorcery: Damaging a champion or tower deals bonus 25 true damage. This effect has a 5 second cooldown versus champions but no cooldown versus towers. 500 Gold.
  • Eye of the Watchers item.png Eye of the Watchers: +25 ability power, +200 health, +150% base mana regeneration, +2 gold per 10 seconds. Unique Passive - Tribute: Spells and basic attacks against champions or buildings deal 15 additional damage and grant 15 gold. This can occur up to 3 times every 30 seconds. Unique Active - Warding: Consumes a charge to place a Stealth Ward that reveals the surrounding area for 150 seconds. Holds up to 4 charges which refill upon visiting the shop. 2200 Gold.
  • Fiendish Codex item.png Fiendish Codex: +25 ability power. Unique Passive: +10% cooldown reduction. 800 Gold.
  • Frost Queen's Claim item.png Frost Queen's Claim: +50 ability power, +150% base mana regeneration, +10% cooldown reduction, +2 gold per 10 seconds. Unique Passive – Tribute: Spells and basic attacks against champions or buildings deal 15 additional damage and grant 15 gold. This can occur up to 3 times every 30 seconds. Unique Active: Summon 2 icy ghosts for 6 seconds that seek out nearby enemy champions. Ghosts reveal enemies on contact and reduce their Movement Speed by 40% for 4 seconds (60 second cooldown.) You may only be in possession of 1 Gold Income item. 2200 Gold.
  • Frostfang item.jpg Frostfang: +15 ability power, +100% base mana regeneration, +2 gold per 10 seconds. Unique Passive – Tribute: Spells and basic attacks against champions or buildings deal 15 additional damage and grant 15 gold. This can occur up to 3 times every 30 seconds. Killing a minion disables this passive for 12 seconds. You may only be in possession of 1 Gold Income item. 850 Gold.
  • Guinsoo's Rageblade item.png Guinsoo's Rageblade: +40 ability power. Unique Passive: Ranged basic grant 1 stack, melee attacks grant 2 stacks. Each stacks grant +4 ability power for 5 seconds (stacking up to 8 times), +8% attack speed and +3 attack damage. +30 attack damage. Unique Passive - Guinsoo's Rage: At 8 stacks, basic attacks deal +20 (+ 15% bonus AD) (+ 7.5% AP) bonus on-hit magic damage to the target and nearby units in an area of effect. 2500 Gold.
  • Haunting Guise item.png Haunting Guise: +25 ability power, +200 health. Unique Passive – Eyes of Pain: +15 magic penetration. 1600 Gold.
  • Hextech Gunblade item.png Hextech Gunblade: +80 ability power, +40 attack damage. Unique Passive - Omnivore : Instantly heal for 15% of all damage dealt, including physical, magical and true damage. Area of effect damage only heals 5% for every unit affected. Unique Active: Deals 150 + (40% AP) magic damage and slows the target champion by 40% for 2 seconds (700 range) (30 second cooldown). 3400 Gold.
  • Hextech Revolver item.png Hextech Revolver: +40 ability power. Unique Passive: +12% spell vamp. 1200 Gold.
  • Liandry's Torment item.png Liandry's Torment: +80 ability power, +300 health. Unique Passive – Eyes of Pain: +15 magic penetration. Unique Passive: Dealing spell damage applies a damage-over-time effect for 3 seconds that deal 2% of target's current health bonus magic damage per second. This bonus damage is doubled against movement-impaired units and capped at 100 damage per second vs. monsters. 3200 Gold.
  • Lich Bane item.png Lich Bane: +80 ability power, +7% movement speed, +250 mana, +10% cooldown reduction. Unique Passive – Spellblade: After using an ability, the next basic attack deals (75% base AD) + (50% AP) bonus magic damage (1.5 second cooldown). 3200 Gold.
  • Luden's Echo item.png Luden's Echo: +100 ability power, +10% movement speed. Unique Passive: Gains charges upon moving or casting. At 100 charges, the next instance of ability damage you deal will expend all charges to deal 100 + (10% AP) bonus magic damage to the first enemy hit and summon up to 3 lesser bolts that target nearby enemies, prioritizing enemies damaged by the ability and champions over minions. 3200 Gold.
  • Morellonomicon item.png Morellonomicon: +80 ability power, +100% base mana regeneration, +20% cooldown reduction. Unique Passive: Dealing magic damage to an enemy champion below 40% health inflicts Grievous Wounds icon Grievous Wounds to them for 4 seconds. 2550 Gold.
  • Nashor's Tooth item.png Nashor's Tooth: +80 ability power, +50% attack speed. Unique Passive: +20% cooldown reduction. Unique Passive: Basic attacks deal 15 + (15% AP) bonus magic damage on hit. 3000 Gold.
  • Needlessly Large Rod item.png Needlessly Large Rod: +60 ability power. 1250 Gold.
  • Rod of Ages item.png Rod of Ages: +80 ability power. Passive: Grants +20 health, +40 mana, and +4 ability power every minute / 40 seconds (maximum +200 health, +400 mana, and +40 ability power). +300 health, +400 mana. Unique Passive – Valor's Reward: Upon leveling up, restores 150 health and 200 mana over 8 seconds. 3000 Gold.
  • Rylai's Crystal Scepter item.png Rylai's Crystal Scepter: +100 ability power, +400 health. Unique Passive: Damaging abilities Slow icon slow affected enemies based on their type: Single Target: 40% for 1.5 seconds. Area of Effect: 40% for 1 second. Damage over time, multi-hit and pet attacks: 20% for 1 second. 3200 Gold.
  • Seeker's Armguard item.png Seeker's Armguard: +20 ability power, +25 armor. Unique Passive: Killing a unit grants 0.5 bonus armor and ability power. This bonus stacks up to 30 times. 1200 Gold.
  • Seraph's Embrace item.png Seraph's Embrace: +80 ability power. Unique Passive – Insight: Grants (3% of your maximum mana) ability power. +1000 mana, +50% base mana regeneration. Unique Active – Mana Shield: Consumes 20% of current mana to shield yourself for 150 + (20% of current mana) for 3 seconds (120 second cooldown). 3100 Gold.
  • Spellthief's Edge item.png Spellthief's Edge: +5 ability power, +25% base mana regeneration, +2 gold per 10 seconds. Unique Passive – Tribute: Spells and basic attacks against champions or buildings deal 10 additional damage and grant 8 gold. This can occur up to 3 times every 30 seconds. Killing a minion disables this passive for 12 seconds. You may only be in possession of 1 Gold Income item. 350 Gold.
  • The Dark Seal item.png The Dark Seal: +15 ability power. Unique Passive - Dread: Grants +3 ability power per stack of Glory, up to a maximum of +30 ability power. +100 mana, +25% increased healing from potions. Unique Passive - Do or Die: Grants 2 Glory for a champion kill and 1 Glory for an assist, up to a maximum of 10 Glory stacks. 400 Gold.
  • Void Staff item.png Void Staff: +80 ability power. Unique Passive: Magic damage ignores 35% of the target's magic resist (applies before magic penetration). 2650 Gold.
  • Will of the Ancients item.png Will of the Ancients: +80 ability power, +10% cooldown reduction. Unique Passive: Abilities instantly heal for 15% of raw damage dealt, including physical, magical and true damage. Area of effect abilities only heal 5% for every unit affected. 2300 Gold.
  • Zeke's Harbinger item.png Zeke's Harbinger: +50 ability power, +250 mana, +30 armor, +10% cooldown reduction. Unique Active – Conduit: Bind to target ally (60 second cooldown). Unique Passive: When within 1000 units of each other, you and your Conduit will generate 1 charge every second, up to 100, with a bonus 4/2 charges whenever you or your ally attack, and 8/4 on spell cast. At 100 charges, causing damage consumes them, increasing your and your ally's ability power by 20% and critical strike chance by 50% for 8 seconds. 2350 Gold.

Variable Availability

  • STH Doran's Ring item.png Doran's Ring: +15 ability power, +60 health, +50% base mana regeneration. Passive: Restores 4 mana upon killing a unit. 400 Gold.
  • S Mejai's Soulstealer item.png Mejai's Soulstealer: +20 ability power. Unique Passive - Dread: Grants +5 ability power per Glory, up to a maximum of +125 ability power. Grants 10% movement speed if you have at least 15 Glory. +200 mana. Unique Passive - Do or Die: Grants 4 Glory per champion kill or 2 Glory per assist, up to 25 Glory total. Upon dying, you lose 10 stacks of Glory. 1400 Gold.
  • C Prospector's Ring item.png Prospector's Ring: +35 ability power. Passive: +6 mana regen per 5 seconds. Unique Passive – Prospector: +150 health. 950 Gold.
  • TC Moonflair Spellblade item.png Moonflair Spellblade: +50 ability power, +50 armor, +50 magic resistance. Unique Passive – Tenacity: Reduces the duration of stuns, slows, taunts, fears, silences, blinds, polymorphs, and immobilizes by 35%. 2500 Gold.
  • SH Rabadon's Deathcap item.png Rabadon's Deathcap: +120 ability power. Unique Passive: Increases ability power by 35%. 3800 Gold.
  • ST Magus item.png Runeglaive: +40 ability power, +250 mana, +10% cooldown reduction. Unique Passive – Spellblade: After using an ability, your next basic attack is converted to magic damage and deals 100% base AD + (30% AP) bonus magic damage in an area around the target. (1.5 second cooldown). Versus monsters, the empowered attack will also restore 8% of your missing mana. 1625 Gold.
  • TC Wooglet's Witchcap item.png Wooglet's Witchcap: +100 ability power. Unique Passive: Increases ability power by 25%. +45 armor. Unique Active – Statis: Champion becomes invulnerable and untargetable for 2.5 seconds, but is unable to move, attack, cast spells, or use items during this time (90 second cooldown). 3500 Gold.
  • SH Zhonya's Hourglass item.png Zhonya's Hourglass: +100 ability power, +45 armor. Unique Active – Stasis: Champion becomes invulnerable and untargetable for 2.5 seconds, but is unable to move, attack, cast spells, or use items during this time (90 second cooldown). 3500 Gold.

Specific to Viktor Viktor

  • Prototype Hex Core item.png Prototype Hex Core: +3 ability power per level. Unique Passive – Progress: This item can be upgraded three times to enhance Viktor's basic abilities. Gold.
  • The Hex Core mk-1 item.png The Hex Core mk-1: +20 ability power, +4 ability power per level, +150 mana. Unique Passive – Progress: Viktor can upgrade one of his basic spells. 1000 Gold.
  • The Hex Core mk-2 item.png The Hex Core mk-2: +40 ability power, +5 ability power per level, +300 mana. Unique Passive – Progress: Viktor can upgrade one of his basic spells. 2000 Gold.
  • Perfect Hex Core item.png Perfect Hex Core: +60 ability power, +6 ability power per level, +500 mana. Unique Passive – Glorious Evolution: Viktor has reached the pinnacle of his power, upgrading Chaos Storm in addition to his basic spells. 3000 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.

  • Cassiopeia Cassiopeia's Aspect of the Serpent.png Aspect of the Serpent gives 5 / 10 / 30% additional ability power to Cassiopeia.
  • Galio Galio's Runic Skin.png Runic Skin adds 50% of his total magic resistance to his ability power.
  • Singed Singed's Insanity Potion.png Insanity Potion grants him 35 / 50 / 80 ability power for 25 seconds.
  • Taric Taric's Radiance.png Radiance grants himself 30 / 50 / 70 ability power, and grants nearby allies half of that amount.
  • Thresh Thresh's Damnation.png Damnation passively generates souls for him to collect, with each soul collected permanently granting 0.75 ability power.
  • Veigar 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.
  • Vladimir Vladimir's Crimson Pact.png Crimson Pact grants ability power equal to 2.5% of his bonus health.

Masteries

  • Arcane Mastery mastery s4.png Natural Talent grants a total of 3 / 6 / 9 / 12 / 15 ability power and 2 / 4 / 6 / 8 / 10 attack damage at level 18.

Neutral buffs

  • The Hand of Baron.png Hand of Baron buff grants up to +40 ability power (among other bonuses) for 3 minutes.

Runes

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

GMarks (2)

X X 0.59

410 IP

Seal

GSeals (3)

X X 0.59

410 IP

Glyph

GGlyphs (3)

0.66

5 IP

0.92

35 IP

1.19

410 IP

Quintessence

GQuintessences (3)

2.75

15 IP

3.85

100 IP

4.95

512 IP

Ability Power, Scaling

(Ability Power per level)

Mark

GMarks (4)

X X 0.1 per level (1.8)

410 IP

Seal

GSeals (2)

X X 0.1 per level (1.8)

410 IP

Glyph

GGlyphs (4)

X X 0.17 per level (3.06)

410 IP

Quintessence

GQuintessences (4)

X X 0.43 per level (7.74)

1025 IP

Trivia

(Last updated 5/1/2016 on patch 5.24)

This combination will result in Cassiopeia Cassiopeia having about 2542 ability power.
Relevant mathematics:
Cassiopeia Cassiopeia's ability power = (15 + 83.16 + 40 + 145 + 120 + 229.73 + (120 × 3) + 50 + 35) × (1.12 × 1.3 × 1.35 × 1.2) = 2542.44
Full rune page of Scaling Ability Power runes = (1.8 × 9) + (1.8 × 9) + (3.06 × 9) + (7.74 × 3) = 83.16
Seraph's Embrace item.png Seraph's Embrace's ability power = ((1000 + 200 + 1391 + (800 × 3)) × 0.03) + 80 = 229.73

[Last updated 13/8/2015 on patch 5.15]

This combination will result in Galio Galio having 129.2032153 ability power.
Relevant mathematics:
Braum Braum's bonus magic resist = (5 + 5 × 3 + 0.77 × 9 + 0.74 × 9 + 1.34 × 9 + 4 × 9 + 25) × 1.10 = 117.315
Galio Galio's magic resist = ((5 + 30 + (15 + 117.315 × 0.1) + 10 + 10) × 1.075) + 32.1 = 119.9613625
Galio Galio's ability power = (0.89 + 6 + 0.59 × 9 + 0.59 × 9 + 1.19 × 9 + 4.95 × 3 + 20 + (119.9613625 × 0.5)) × 1.05 = 129.2032153


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