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Damage modifier

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Damage modifiers refer to the buffs or debuffs applied to a unit that causes it to deal or receive increased or decreased damage. These are percentage values. They don't add extra flat damage but modify all damage normally done. These buffs or debuffs are only received by champion abilities, neutral buffs, on-hit effects from items and masteries.

Damage dealt modifier

These are buffs that allow the champion that has them to deal increased or decreased magic or physical damage from basic attacks, abilities and item's actives. The raw value from the attack or ability is increased or decreased by the modifier and then applied to the target.

All damage dealt modifiers stack multiplicatively. Since multiplication is commutative, the order is irrelevant. So if Talon Talon uses an autoattack on a CC'd champion just after using a maxed Cutthroat.png Cutthroat on it, while affected by Urgot Urgot's Zaun-Touched Bolt Augmenter.png Zaun-Touched Bolt Augmenter, his autoattack's damage will be modified by 107.525% (110% × 115% × 85%).

Increasing damage dealt

Champion abilities

Note: Only the damage modifier effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

Masteries

  • Weapon Expertise mastery s2.png Assassin increases your damage by 2% while no allied champions are nearby.
  • Bounty Hunter mastery 2016.png Bounty Hunter permanently increases your damage by 1% for every champion you kill, up to 1% per unique champion.
  • Double-Edged Sword mastery S4.png Double Edged Sword grants 3% increased damage to melee champions and 2% to ranged champions.
  • Executioner mastery s4.png Merciless grants 1 / 2 / 3 / 4 / 5% increased damage to enemy champions below 40% of their maximum health.
  • Evasive mastery s4.png Oppressor increases your damage by 2.5% against enemies with impaired or inhibited movement.
  • Butcher mastery s4.png Savagery increases the damage of basic attacks and single-target spells against minions and monsters by 1 / 2 / 3 / 4 / 5.
  • Sorcery mastery s4.png Sorcery increases your Ability and Spell damage by 0.4 / 0.8 / 1.2 / 1.6 / 2%.

Decreasing damage dealt

Champion abilities

Note: Only the damage modifier effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

Summoner Spell

  • Exhaust.png Exhaust reduces damage dealt by 40% for 2.5 seconds.

Damage received modifier

These are buffs or debuffs that allow the champion that have them to receive increased or decreased magic or physical damage from autoattacks, abilities and item's actives. The final value from the attack or ability is increased or decreased by the modifier and then directly applied to the target's health.

Armor and magic resistance damage reduction percentage count as one source of damage received modifier against physical and magical damage respectively. For example, a champion with 300 armor has 75% damage reduction from physical damage.

Damage reduction from armor and magic resistance and from any other sources stack multiplicatively.

Increasing damage received

Note: Only the damage modifier effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

Champion abilities

  • Vladimir Vladimir's Hemoplague.png Hemoplague affects all targets hit to receive 10% increased damage from all sources for the next 5 seconds.

Masteries

Decreasing damage received

Champion abilities

Note: Only the damage modifier effect of these abilities is shown here, to read more information on each of these abilities, follow the link on each of them.

  • Alistar Alistar's Unbreakable Will.png Unbreakable Will grants him 50% / 60% / 70% damage reduction for 7 seconds.
  • Annie Annie's Molten Shield.png Molten Shield grants her 16% / 22% / 28% / 34% / 40% damage reduction for 3 seconds.
  • Braum Braum's Unbreakable.png Unbreakable grants him 30% / 32.5% / 35% / 37.5% / 40% damage reduction from oncoming sources (excluding true damage and towers) for 3 / 3.25 / 3.5 / 3.75 / 4 seconds. The damage reduction is increased to 100% for the first source of champion damage that would be reduced.
  • Galio Galio's Idol of Durand.png Idol Of Durand grants him 50% damage reduction while channeling for up to 2 seconds.
  • Garen Garen's Courage.png Courage places a defensive shield on himself, decreasing all damage taken by 30% for 2 / 3 / 4 / 5 / 6 seconds.
  • Gragas Gragas' Drunken Rage.png Drunken Rage takes a long swig from his barrel, disabling his ability to cast or attack for 1 second and then receives 10% / 12% / 14% / 16% / 18% reduced damage for 3 seconds.
  • Kassadin Kassadin's Void Stone.png Void Stone reduces all magic damage taken by 15%.
  • Katarina Katarina's Shunpo.png Shunpo to grant her 15% damage reduction for 1.5 seconds after blinking.
  • Malzahar Malzahar's Void Shift.png Void Shift grants him 90% damage reduction against the first spell or autoattack that hits him, lingering for 0.25 seconds.
  • Maokai Maokai's Vengeful Maelstrom.png Vengeful Maelstrom creates a great vortex of natural energy around himself reducing non-tower damage done to allied champions in the area by 20% up to 10 seconds.
  • Master Yi Master Yi's Meditate.png Meditate grants him 50/55/60/65/70% damage reduction up to 4 seconds while channeling.
  • Urgot Urgot's Hyper-Kinetic Position Reverser.png Hyper-Kinetic Position Reverser grants 30 / 40 / 50% damage reduction for 5 seconds.
  • Yorick Yorick's Unholy Covenant.png Unholy Covenant grants him 5% damage reduction for each ghoul currently summoned.

Summoner Spells

  • Challenging Smite.png Challenging Smite reduces the damage dealt of the marked target to the caster by 20% for 4 seconds.

Items

  • Ninja Tabi item.png Ninja Tabi grants the wearer 10% physical damage reduction from basic attacks.
  • Phantom Dancer item.png Phantom Dancer grants the wearer 12% damage reduction against the last enemy champion hit (ends after 10 seconds out-of-combat).

Masteries

  • Bond of Stone mastery 2016.png Bond of Stone decreases damage taken by 4%. While within a 1000-range of an allied champion, 6% of the damage they would take from enemy champions is dealt to you instead (cannot reduce you below 5% health).

Damage immunity

There are some instances in the game where a champion is immune to receiving any kind of damage (including true damage) for a few seconds.

Champions

  • Aatrox Aatrox's Blood Well.png Blood Well grants him damage immunity while reviving and restoring health.
  • Bard Bard's Tempered Fate.png Tempered Fate grants affected units damage immunity for 2.5 seconds.
  • Fiora Fiora's Riposte.png Riposte grants her damage immunity for 0.75 seconds.
  • Kalista Kalista's Fate's Call.png Fate's Call grants the oathsworn ally damage immunity for up to 4 seconds.
  • Kayle Kayle's Intervention.png Intervention grants the target ally champion damage immunity for 2 / 2.5 / 3 seconds.
  • Kindred Kindred's Lamb's Respite.png Lamb's Respite grants all units inside the affected area become immune to damage when they are reduced to 10% of their maximum health.
  • Lissandra Lissandra's Frozen Tomb.png Frozen Tomb grants her damage immunity for 2.5 seconds if cast on herself.
  • Taric Taric's Cosmic Radiance.png Cosmic Radiance grants him and all nearby allied champions damage immunity for 2.5 seconds after a 2.5 second delay.
  • Zilean Zilean's Chrono Shift.png Chronoshift grants the target damage immunity for 2 seconds if it takes fatal damage within 5 seconds.

Items

Flat Damage Reduction

Several champions have abilities that reduce damage by a flat amount.Some flat damage reductions are factored in after armor or magic resistance. This makes it significantly better the more resistances you have. In addition, periodic damage effects will have each tick of damage reduced. For example, Malzahar Malzahar's Malefic Visions.png Malefic Visions ticks 8 times, so 1 flat damage reduction would reduce its total damage by 8.

Flat damage reduction does not work against true damage.

Champions

  • Amumu Amumu's Tantrum.png Tantrum provides 2 / 4 / 6 / 8 / 10 physical flat damage reduction.
  • Fizz Fizz's Nimble Fighter.png Nimble Fighter provides 4 - 14 (based on level) flat damage reduction against auto-attacks.

Items

  • Doran's Shield item.png Doran's Shield blocks 8 damage from champion basic attacks and single target spells. The damage reduction is calculated before armor/magic resist and percentage damage reduction benefits are taken into account.

Masteries

  • Block mastery s4.png Tough Skin Reduces all damage taken from champion and monster basic attacks by 2.

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