Brutal Slayer

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Harsh Slayer.png
[Passive] Burn enemies' MP at a certain chance and decrease cooldown for Special Active skills.


Class Level Required
Infinity Sword 35

Skill Information

Skill Level Level Required On successful hit with Commands or Skills
Activation Chance MP Burn Special Active Cooldown Reduction Reactivation Cooldown
1 35 5% -10 MP 7 Seconds 10 Seconds
2 51 10%
3 59 15%
4 92 20%
1 35 5% -10 MP 3 Seconds 10 Seconds
2 51 10%
3 59 15%
4 92 20%

Tips and Details

  • The effect cannot trigger on hits dealt by either Hyper Active skill.


  • Brutal Slayer is currently the only skill to allow you to burn MP from targets passively.


Date Changes
06/27/2013 11/06/2013
  • Brutal Slayer added.
02/05/2015 -
  • Chance decreased.
  • MP Burn decreased.
04/21/2016 05/18/2016
  • Activation Chance increased.
  • MP Burn decreased.
  • Fixed issue where cooldown didn't reduce.
  • Tooltip changed.
11/02/2017 11/15/2017
  • Activation Chance increased.
  • Cooldown Reduction increased.
09/20/2018 10/11/2018
  • Can be activated by any attack.
  • Cooldown Reduction increased.
  • Reactivation Cooldown increased.
02/21/2019 -
  • Fixed 'Main Skill' tooltip in the skill window as Infinity Sword mentioning "normal attacks" instead of "all attacks".
06/20/2019 07/17/2019
  • Changed so MP Burn cannot be trigger by Hyper Actives.

Alternative Names

Server Name Translation
Korean Flag.png South Korea 냉혹한 학살자 Brutal Slayer
Japanese Flag.png Japan 吹き荒ぶ力の奔流 Torrent of Raging Power
Chinese Flag.png China (Simplified Chinese) 冷酷杀手 Callous Slayer
German Flag.png Germany Erbarmungsloser Schlächter Merciless Butcher
Spanish Flag.png Spain Carnicero despiadado Merciless Butcher
French Flag.png France Impitoyable boucher Ruthless Butcher
Italian Flag.png Italy Sterminatore Spietato Merciless Butcher
Polish Flag.png Poland Bezlitosny Rzeźnik Merciless Butcher
English Flag.png United Kingdom Harsh Slayer
Bresil Flag.png Brazil Retalhador Brutal Brutal Shredder

Infinity Sword Skills
Hyper Active
Blade Rain Blade Rain
Special Active
PhantomSword2.png Phantom Sword     AssaultDash.png Assault Dash      ISspecial2.png Rage Cutter     MaelstromRage.png Maelstrom Rage     PhantomDancing.png Phantom Dance      ISspecial1.png Sword Blasting     ISTrans1.png Infinite Chaser     ISTrans3.png Blade Circle     ISTrans6.png Infinite Strike
Fatal Slap.png Fatal Slap     SacCounter.png Compact Counter     ISTrans2.png Infinite: Flurry
Harsh Slayer.png Brutal Slayer     Sharp Blade.png Sharp Sword     LightningStep2.png Lightning Surge     ISTrans4.png Awakened Will: Infinity Sword     TransShared.png Awakened One     ISTrans5.png Master of Infinity