Set 17.0

Debuffs

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)

  • Shield of Daybreak
    Gain ? Ability Power Shield for 4 seconds. Bash the current target, dealing 100 / 150 / 225 ArmorMagic Resist 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 Ability Power and gaining 400 / 500 / 675 Ability Power Shield. When the stance ends, strike all nearby enemies, dealing ? ArmorMagic Resist 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 ? Ability Power 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 ? Max Health bonus physical damage.
  • Psionic Crush
    Hurl a chunk of magnetic debris at the nearest target without one, dealing 240 / 360 / 999 Ability Power 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 Ability Power magic damage, then crush all the debris onto the target, dealing 620 / 930 / 9999 Ability Power magic damage and briefly stunning them.

Artifacts (4)

    • +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

    • +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.

    • +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.

    • +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)

  • 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)

  • After 8 seconds of combat, stun the enemy team for 1.5 seconds. Repeat this after 18 seconds of combat.
    
    TFT Macao Open, 2024
  • 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)

  • Reality Tear
    Passive: On cast, attacks gain ? Ability Power stacking bonus magic damage. Starting from the third cast, gain true damage instead.
    
    Active: Gain 225 / 300 / 3456 Max HealthAbility Power 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)

    • +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)

  • Stellar Slash
    Heal 300 / 375 / 575 Ability Power, then deal 80 / 120 / 180 Attack DamageArmor physical damage to the current target.
    
    N.O.V.A. Strike: Cleave the battlefield, briefly knocking up all enemies and dealing ? Attack DamageArmor physical damage.
  • Upheaval
    Heal ? Max HealthAbility Power, then briefly knock up adjacent enemies and deal 80 / 120 / 180 Ability Power magic damage.
  • Meep Impact
    Heal ? Max HealthAbility Power Health over 3 seconds. Slam the target, dealing 160 / 240 / 360 Ability Power 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 ? .
  • Meep Bait
    Dash through the current target, dealing ? Ability Power magic damage. Every third cast also summons a Mega Meep after a delay, briefly knocking the target up and dealing ? Ability Power magic damage. Adjacent enemies take 50% damage.
    
    Meep Bonus: Add ? Meep to the bait, increasing Mega Meep damage by ? Ability Power.
  • Divine Scythe
    Gain 20% Durability for 2 seconds, healing ? Ability Power over the duration. Afterwards, slash forward in a line, dealing 120 / 180 / 300 Attack Damage 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 ? Attack DamageAbility Power physical damage and entering The Groove for 3 seconds.
    
    Active: Unleash a volley of bullets at the target, dealing 380 / 570 / 915 Attack Damage physical damage and knocking up for 1.25 seconds.
  • Calamity
    Gain 475 / 575 / 2000 Ability Power Shield for 4 seconds. Summon an astrolabe to crash down on a nearby hex, dealing 120 / 180 / 2000 Ability Power magic damage to enemies within 2 hexes. Then, push the astrolabe towards the end of the board, dealing 100 / 150 / 2000 Ability Power magic damage. All enemies hit by the astrolabe are knocked up for 1.75 / 2 / 8 seconds.
  • Party Crasher
    Passive: Every 2 / 2 / 0.5 seconds, call down a bolt on the highest Health nearby enemy that deals 60 / 90 / 150 Ability Power 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 Ability Power magic damage. They crash down into the disco ball, dealing 175 / 265 / 5000 Ability Power 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)

  • (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)

    • +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

    Needlessly Large RodNegatron Cloak
    • +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

    Recurve BowTear of the Goddess

Radiant items (2)

    • +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

    • +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)

    • +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)

    • +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

    • +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)

Sunder

Reduces the target's Armor for a duration.

Traits (1)

  • (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)

    • +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

    Negatron CloakGiant's Belt
    • +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

    Recurve BowSparring Gloves

Radiant items (2)

    • +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

    • +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)

    • +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

    • +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)

    • +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.

    • +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)

  • Every second, reduce the Armor of enemies within 2-hexes by 5, doubled for adjacent enemies.

  • Attacks reduce enemy Armor and Magic Resistance by 1.

  • Attacks reduce enemy Armor and Magic Resistance by 2.

Wound

Reduces healing the target receives for a duration.

Champions (1)

  • Star Strike
    Reposition next to the target to strike the most enemies. Then throw 5 piercing kunai, each dealing 34 / 50 / 80 Attack Damage physical damage to the first enemy hit, reduced to ? Attack Damage 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 ? Attack Damage physical damage each second. Kunai increase the damage of the bleed by 10%.

Completed items (3)

    • +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

    Needlessly Large RodGiant's Belt
    • +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

    Recurve BowRecurve Bow
    • +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

    Chain VestGiant's Belt

Radiant items (3)

    • +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

    • +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

    • +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)

    • +65% AS

    Shrinks the holder, granting them increased movement speed and immunity to Slow, Burn, and Wound. Slow Burn Wound

Anima items (2)

    • +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

    • +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)

    • +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

    Needlessly Large RodGiant's Belt
    • +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

    Recurve BowRecurve Bow
    • +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

    Chain VestGiant's Belt

Radiant items (3)

    • +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

    • +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

    • +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)

    • +65% AS

    Shrinks the holder, granting them increased movement speed and immunity to Slow, Burn, and Wound. Slow Burn Wound

Anima items (2)

    • +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

    • +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)

  • 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)

  • Diviner's Judgment
    Stab the target, causing them to bleed for 460 / 690 / 1090 Attack DamageAbility Power physical damage over 18 seconds. After the attack, leap to the highest percent Health enemy within 3 hexes.
  • Double Time
    Passive: Attacks deal 30 / 45 / 100 Ability Power bonus magic damage and an additional 70 / 105 / 190 Ability Power 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.
  • Star Strike
    Reposition next to the target to strike the most enemies. Then throw 5 piercing kunai, each dealing 34 / 50 / 80 Attack Damage physical damage to the first enemy hit, reduced to ? Attack Damage 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 ? Attack Damage physical damage each second. Kunai increase the damage of the bleed by 10%.

Traits (1)

  • 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