About debuffs
Negative effects you can apply to enemies. Each entry below lists every Set-17 source — champions, traits, items, and augments — that inflicts that effect. Click an effect's name for the full breakdown, including what counters it.
See also: Buffs — positive effects you can stack on your own units — and Economy for player-side resource mechanics.
Stun
Disables the target for a duration: no movement, no attacks, no ability casts.
Champions (4)
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Shield of Daybreak Gain ? Shield for 4 seconds. Bash the current target, dealing 100 / 150 / 225 magic damage and stunning them for 1.75 / 1.75 / 2 seconds. -
Counter Star-ike Enter a defensive stance for 3 seconds, reducing incoming damage by 15 / 25 / 35 and gaining 400 / 500 / 675 Shield. When the stance ends, strike all nearby enemies, dealing ? magic damage and Stunning them for 1 / 1.25 / 1.5 second(s). -
Grasp of Convergence Passive: Gain 45% more max Health from all sources. Active: Converge an X-shape of vines on the target, dealing ? magic damage to each enemy hit and Stunning them for 1.5 / 1.5 / 1.75 seconds. N.O.V.A. Strike: Send forth a wave of dragons that stun all enemies for 1.5 / 1.5 / 1.75 seconds. For the rest of combat, Maokai's attacks deal ? bonus physical damage.
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Psionic Crush Hurl a chunk of magnetic debris at the nearest target without one, dealing 240 / 360 / 999 magic damage and sticking it to them. If an enemy with debris dies, it passes to the nearest enemy without one. Every 5 casts, instead rip off all debris dealing 120 / 180 / 999 magic damage, then crush all the debris onto the target, dealing 620 / 930 / 9999 magic damage and briefly stunning them.
Artifacts (4)
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- +200 HP
- +20 Armor
Enemies who damage the holder are 20% Chilled for 1.5 seconds. After 7 Chills from this item, the attacker is Stunned instead (Cooldown: 15 seconds). [Unique - only 1 per champion] Chill: reduce Attack Speed Stun: cannot move, attack, or cast Abilities
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- +250 HP
- +20 Armor
- +20 MR
- +2 Mana Regen
Stunning an enemy causes lightning to strike them, dealing 30% of their max Health as magic damage.
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- +80 Armor
- +80 MR
- +140% AD
Grants immunity to Stuns and the holder's attacks Stun the target for 0.8 seconds. The holder's Attack Speed is locked at 0.5.
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- +500 HP
- +20 Armor
- +20 MR
The holder's Move Speed is drastically reduced. Gain 15% max Health, stun immunity, and pull the current target into melee range.
Graves items (1)
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Combat Start: Unleash a shockwave forward that deals 15% of Graves' max Health as magic damage and stun enemies hit for 2 seconds.
Augments (2)
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After 8 seconds of combat, stun the enemy team for 1.5 seconds. Repeat this after 18 seconds of combat. TFT Macao Open, 2024
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Gain 2 Training Dummies. Combat start: Your Training Dummies launch themselves towards a group of enemies and Stun them for 1 seconds.
Slow
Reduces the target's attack speed and/or movement speed for a duration.
Champions (1)
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Reality Tear Passive: On cast, attacks gain ? stacking bonus magic damage. Starting from the third cast, gain true damage instead. Active: Gain 225 / 300 / 3456 Shield for 3 seconds, then slice open a rift on the largest group of champions dealing the Passive's bonus damage to all enemies within. Enemies have their Attack Speed slowed by 50 / 50 / 999% while allies within gain 80 / 80 / 999% Attack Speed, both rapidly decaying over 3 seconds.
Artifacts (1)
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- +65% AS
Shrinks the holder, granting them increased movement speed and immunity to Slow, Burn, and Wound. Slow Burn Wound
Knock Up
Briefly lifts the target into the air, interrupting their action. A handful of Set-17 carries cause it (Blitzcrank, Rek'Sai, Rhaast, Aatrox, Fizz); Samira's passive reacts to it.
Champions (8)
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Stellar Slash Heal 300 / 375 / 575 , then deal 80 / 120 / 180 physical damage to the current target. N.O.V.A. Strike: Cleave the battlefield, briefly knocking up all enemies and dealing ? physical damage. -
Upheaval Heal ? , then briefly knock up adjacent enemies and deal 80 / 120 / 180 magic damage. -
Meep Impact Heal ? Health over 3 seconds. Slam the target, dealing 160 / 240 / 360 magic damage and knocking up for 1.5 / 1.75 / 2 seconds. The impact creates meepwaves that deal 50% of these effects in the target's row. Meep Bonus: Meeps water Meepsie's flower, increasing all incoming Healing and Shielding by ? .
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Meep Bait Dash through the current target, dealing ? magic damage. Every third cast also summons a Mega Meep after a delay, briefly knocking the target up and dealing ? magic damage. Adjacent enemies take 50% damage. Meep Bonus: Add ? Meep to the bait, increasing Mega Meep damage by ? .
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Divine Scythe Gain 20% Durability for 2 seconds, healing ? over the duration. Afterwards, slash forward in a line, dealing 120 / 180 / 300 physical damage to enemies hit and knocking them up for 1 second. -
Jump and Jive Passive: Whenever an enemy is knocked up, shoot them, dealing ? physical damage and entering The Groove for 3 seconds. Active: Unleash a volley of bullets at the target, dealing 380 / 570 / 915 physical damage and knocking up for 1.25 seconds.
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Calamity Gain 475 / 575 / 2000 Shield for 4 seconds. Summon an astrolabe to crash down on a nearby hex, dealing 120 / 180 / 2000 magic damage to enemies within 2 hexes. Then, push the astrolabe towards the end of the board, dealing 100 / 150 / 2000 magic damage. All enemies hit by the astrolabe are knocked up for 1.75 / 2 / 8 seconds.
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Party Crasher Passive: Every 2 / 2 / 0.5 seconds, call down a bolt on the highest Health nearby enemy that deals 60 / 90 / 150 magic damage. Active: Summon a disco ball at the largest clump of enemies, then knock up the current target into it, dealing 150 / 225 / 999 magic damage. They crash down into the disco ball, dealing 175 / 265 / 5000 magic damage in a three hex radius. Enter The Groove for 1 second per enemy hit.
Shred
Reduces the target's Magic Resist for a duration.
Traits (1)
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(2) 6 seconds into combat, N.O.V.A. grant a power surge to allies based on champions. (2) Gain a Striker selector. The chosen N.O.V.A. activates their Strike during the power surge. Aatrox: Ally Damage 30% Shred and Sunders enemies Caitlyn: Grant allies 20% Attack Speed Akali: Allies gain Precision Maokai: Allies heal 12% max Health Kindred: Shield the strongest Tank for 800 Emblem: Allies deal 10% stacking bonus true damage
Completed items (2)
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- +250 HP
- +35 MR
- +15 AP
30% Shred enemies within 2 hexes. When enemies cast an Ability, deal magic damage equal to 150% of the Mana spent Shred: Reduce Magic Resist
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- +15% AS
- +35 AP
- +1 Mana Regen
Damage from attacks and Abilities 30% Shred the target for 5 seconds. This effect does not stack. Shred: Reduce Magic Resist
Radiant items (2)
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- +500 HP
- +70 MR
- +30 AP
30% Shred enemies within 2 hexes. When enemies cast an Ability, deal magic damage equal to 300% of the Mana spent. [Direct damage item] Shred: Reduce Magic Resist
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- +30% AS
- +75 AP
- +2 Mana Regen
Damage from attacks and Abilities 30% Shred the target for the rest of combat. This effect does not stack. Shred: Reduce Magic Resist
Artifacts (1)
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- +60 AP
- +2 Mana Regen
Dealing magic damage reduces the target's Magic Resist by 4. If their Magic Resist is 0, grant the holder 2 Mana instead. Ability damage can only trigger on each enemy once every 0.5 seconds.
Anima items (2)
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- +15 Armor
- +15 MR
- +20% AD
- +20 AP
Gain 3 orbiting razors. Razors deal ? magic damage, and 30% Shred and Sunder enemies for 4 seconds. Deal 10% increased damage to Shredded or Sundered enemies. Damage increases based on Stage. Recommended Roles: Attack or Magic Fighter
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- +40 Armor
- +40 MR
- +30% AD
- +30 AP
Gain 6 orbiting razors. Razors deal ? true damage, and 30% Shred and Sunder enemies for the rest of combat. Deal 30% increased damage to Shredded or Sundered enemies. Damage increases based on Stage. Recommended Roles: Attack or Magic Fighter
Graves items (2)
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Attacks reduce enemy Armor and Magic Resistance by 1.
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Attacks reduce enemy Armor and Magic Resistance by 2.
Sunder
Reduces the target's Armor for a duration.
Traits (1)
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(2) 6 seconds into combat, N.O.V.A. grant a power surge to allies based on champions. (2) Gain a Striker selector. The chosen N.O.V.A. activates their Strike during the power surge. Aatrox: Ally Damage 30% Shred and Sunders enemies Caitlyn: Grant allies 20% Attack Speed Akali: Allies gain Precision Maokai: Allies heal 12% max Health Kindred: Shield the strongest Tank for 800 Emblem: Allies deal 10% stacking bonus true damage
Completed items (2)
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- +250 HP
- +20 MR
30% Sunder enemies within 2 hexes. Gain 15 Armor and Magic Resist for the first 15 seconds of combat. Sunder: Reduce Armor
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- +15% AD
- +20% AS
- +20% Crit
Damage from attacks and Abilities 30% Sunder the target for 3 seconds. This effect does not stack. Sunder: Reduce Armor
Radiant items (2)
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- +500 HP
- +40 MR
30% Sunder enemies within 3 hexes. Gain 50 Armor and Magic Resist for the first 20 seconds of combat. Sunder: Reduce Armor
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- +45% AD
- +40% AS
- +40% Crit
Damage from attacks and Abilities 30% Sunder the target for the rest of combat. This effect does not stack. Sunder: Reduce Armor
Anima items (2)
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- +15 Armor
- +15 MR
- +20% AD
- +20 AP
Gain 3 orbiting razors. Razors deal ? magic damage, and 30% Shred and Sunder enemies for 4 seconds. Deal 10% increased damage to Shredded or Sundered enemies. Damage increases based on Stage. Recommended Roles: Attack or Magic Fighter
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- +40 Armor
- +40 MR
- +30% AD
- +30 AP
Gain 6 orbiting razors. Razors deal ? true damage, and 30% Shred and Sunder enemies for the rest of combat. Deal 30% increased damage to Shredded or Sundered enemies. Damage increases based on Stage. Recommended Roles: Attack or Magic Fighter
Psionic items (2)
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- +15% AD
- +15% AS
Dealing physical damage to an enemy reduces the target's Armor by 2. (Ability Damage Cooldown: 0.75 seconds) Recommended users: Master Yi and Pyke.
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- +15% AD
- +15% AS
Dealing physical damage to an enemy reduces the target's Armor by 2. (Ability Damage Cooldown: 0.75 seconds) At (4): If the holder is Psionic, every 3rd attack cleaves, dealing 75 physical damage to nearby enemies. Recommended users: Master Yi and Pyke.
Graves items (3)
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Every second, reduce the Armor of enemies within 2-hexes by 5, doubled for adjacent enemies.
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Attacks reduce enemy Armor and Magic Resistance by 1.
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Attacks reduce enemy Armor and Magic Resistance by 2.
Wound
Reduces healing the target receives for a duration.
Champions (1)
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Star Strike Reposition next to the target to strike the most enemies. Then throw 5 piercing kunai, each dealing 34 / 50 / 80 physical damage to the first enemy hit, reduced to ? for each subsequent target. Kunai remove 1 Armor, 2 if they crit. N.O.V.A. Strike: Slice all enemies, applying Wound and a bleed that deals ? physical damage each second. Kunai increase the damage of the bleed by 10%.
Completed items (3)
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- +150 HP
- +20 AP
- +1 Mana Regen
Attacks and Abilities deal 1% Burn and 33% Wound to enemies for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +45% AS
Attacks and Abilities 1% Burn and 33% Wound enemies for 5 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +150 HP
- +20 Armor
Gain 8% max Health. Every 2 seconds, deal 1% Burn and 33% Wound to an enemy within 2 hexes for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
Radiant items (3)
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- +300 HP
- +40 AP
- +2 Mana Regen
Attacks and Abilities deal 2% Burn and 33% Wound to enemies for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +90% AS
Attacks and Abilities 2% Burn and 33% Wound enemies for 5 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +300 HP
- +40 Armor
Gain 16% max Health. Every 2 seconds, deal 2% Burn and 33% Wound to an enemy within 2 hexes for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: reduces healing received
Artifacts (1)
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- +65% AS
Shrinks the holder, granting them increased movement speed and immunity to Slow, Burn, and Wound. Slow Burn Wound
Anima items (2)
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- +40% AD
- +40 AP
- +5 Mana Regen
For every 15 mana spent, fire a projectile at a nearby enemy dealing ? + 50% of the holder's Ability Power magic damage, and applying 1% Burn and 33% Wound to enemies for 10 seconds. Each projectile leaves a lingering field that deals ? magic damage to enemies each second. Damage increases based on Stage. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received Recommended Roles: Magic Caster
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- +10% AD
- +40 AP
- +4 Mana Regen
For every 20 mana spent, fire a projectile at a nearby enemy, dealing ? + 75% of the holder's Ability Power magic damage and applying 1% Burn and 33% Wound to enemies for 3 seconds. Damage increases based on Stage. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received Recommended Role: Magic Caster
Burn
Deals % maximum-Health true damage over time. Stacks with Wound to define the canonical anti-tank package.
Completed items (3)
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- +150 HP
- +20 AP
- +1 Mana Regen
Attacks and Abilities deal 1% Burn and 33% Wound to enemies for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +45% AS
Attacks and Abilities 1% Burn and 33% Wound enemies for 5 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +150 HP
- +20 Armor
Gain 8% max Health. Every 2 seconds, deal 1% Burn and 33% Wound to an enemy within 2 hexes for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
Radiant items (3)
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- +300 HP
- +40 AP
- +2 Mana Regen
Attacks and Abilities deal 2% Burn and 33% Wound to enemies for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +90% AS
Attacks and Abilities 2% Burn and 33% Wound enemies for 5 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received
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- +300 HP
- +40 Armor
Gain 16% max Health. Every 2 seconds, deal 2% Burn and 33% Wound to an enemy within 2 hexes for 10 seconds. Burn: Deals a percent of the target's max Health as true damage every second Wound: reduces healing received
Artifacts (1)
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- +65% AS
Shrinks the holder, granting them increased movement speed and immunity to Slow, Burn, and Wound. Slow Burn Wound
Anima items (2)
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- +40% AD
- +40 AP
- +5 Mana Regen
For every 15 mana spent, fire a projectile at a nearby enemy dealing ? + 50% of the holder's Ability Power magic damage, and applying 1% Burn and 33% Wound to enemies for 10 seconds. Each projectile leaves a lingering field that deals ? magic damage to enemies each second. Damage increases based on Stage. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received Recommended Roles: Magic Caster
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- +10% AD
- +40 AP
- +4 Mana Regen
For every 20 mana spent, fire a projectile at a nearby enemy, dealing ? + 75% of the holder's Ability Power magic damage and applying 1% Burn and 33% Wound to enemies for 3 seconds. Damage increases based on Stage. Burn: Deals a percent of the target's max Health as true damage every second Wound: Reduces healing received Recommended Role: Magic Caster
Augments (1)
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Combat Start: Burn all enemies for 15% of their max Health over 15 seconds and reduce healing received by 33%.
Bleed
Damage dealt over multiple seconds as flat physical or magic damage, AD- or AP-scaled. Distinct from Burn (% max-Health true damage). Set-17 sources include Talon's stab, Akali's bleed (DRX capstone), Teemo's poison passive, and the Stargazer Serpent constellation.
Champions (3)
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Diviner's Judgment Stab the target, causing them to bleed for 460 / 690 / 1090 physical damage over 18 seconds. After the attack, leap to the highest percent Health enemy within 3 hexes.
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Double Time Passive: Attacks deal 30 / 45 / 100 bonus magic damage and an additional 70 / 105 / 190 stacking magic damage over 6 seconds. While an enemy has 5 or more stacks, Teemo is in The Groove. Active: Gain 150% Attack Speed for 3 attacks.
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Star Strike Reposition next to the target to strike the most enemies. Then throw 5 piercing kunai, each dealing 34 / 50 / 80 physical damage to the first enemy hit, reduced to ? for each subsequent target. Kunai remove 1 Armor, 2 if they crit. N.O.V.A. Strike: Slice all enemies, applying Wound and a bleed that deals ? physical damage each second. Kunai increase the damage of the bleed by 10%.
Traits (1)
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Stargazers chart a different constellation every game. This game: The Serpent. Allies in empowered hexes gain 5% Durability. Stargazers in empowered hexes gain more and poison enemies, repeating a portion of damage dealt as magic damage over 3 seconds. (3) 5%, 25% poison damage More hexes reveal at each player level