Extreme Rune Buster

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RSTrans6.png [Special Active: Bravery] Strike the ground using a sword filled with mana and cause chain explosion with flame, ice and poison runes.
Destruction Skill
  • Consumes the Destruction gauge and charges the Vitality gauge
  • Boosts attack power by 50% when Destruction is active
Final Enhanced Skill
  • Damage is increased by 1.2 times.


Class Level Required
Rune Slayer: Transcendent 95

Skill Information


Level Required Damage (Magical) Max Hits Burn / Ice / Poison Duration MP Usage Cooldown
Sword Aura Shockwave Rune Explosion Sword Aura Shockwave Rune Explosion
Hits per Rune Rune Count
95 120% 441% 875% 5 8 3 7 5 Seconds 300 MP 23 Seconds
[Enhanced] 144% 529% 1050%


Level Required Damage (Magical)
Sword Aura Shockwave Rune Explosion
95 41% 150% 300%
[Enhanced] 49% 180% 360%

Skill Traits

Heavy Extreme Rune Buster Light Extreme Rune Buster
Attribute Effect Cooldown Attribute Effect MP Usage
Damage increased to 144%
Cooldown increased to 120%
27.6 Seconds MP Usage decreased to 80% 240 MP

Total Damage

Mode Regular
Normal Destruction
Normal Heavy Normal Heavy
Average Max Average Max Average Max Average Max
PvE 14,402% 27,002% 20,738.88% 38,882.88% 21,603% 40,503% 31,108.32% 58,324.32%
PvP 4,925% 9,245% 7,092% 13,312.8% 6,156.25% 11,556.25% 8,865% 16,641%
  • Average hit count includes targets being hit by at least 3 Runes, totaling 9 Rune Explosion hits.

Related Skills

RMPowerflow.png Mana Flow RMEnlightenmentstate.png New Heights

Tips and Details

  • The Sword Aura deals damage at certain intervals while it is summoned. As such, the hit count entirely depends on how long an enemy stays within its hitbox. The damage of this part is relatively insignificant compared to the rest of the skill, however. At point-blank, it will hit around 5 times on most targets.
    • It is possible to land 3 runes on most enemies with some good positioning, especially on enemies at a higher elevation than you as the runes are summoned a decent amount above the ground.


  • This is the only Rune Slayer skill to use a Sword Aura. The blade is slightly larger than Infinity Sword's Phantom Sword and resembles a Luna Blade in appearance. It can not be controlled after the skill.
    • Additionally, the release of this skill means all of Elsword's and Elesis's classes now have an Aura they can call upon, although Rune Slayer and Crimson Avenger cannot control theirs after the skills that summon them.
  • This is the only instance of Poison Runes being utilized.

Old Version

  • In the past, Extreme Rune Buster would launch targets into the air into a field of rune explosions.


Date Changes
11/03/2016 -
  • Extreme Rune Buster added.
  • Sword Aura damage increased.
  • Shockwave damage decreased.
  • Rune Explosion damage decreased.
01/25/2017 -
  • Rune Explosion damage increased.
  • Sword Aura damage decreased.
  • Shockwave damage decreased.
04/27/2017 -
  • Damage increased.
  • Shockwave damage increased.
07/27/2017 -
  • Rune Explosion damage increased.
  • Rune Explosion damage increased.
  • Sword Aura damage decreased.
  • Shockwave damage decreased.
09/28/2017 10/18/2017
  • None
  • Damage decreased.
04/05/2018 04/18/2018
  • Shockwave damage increased.
  • Sword Aura damage decreased.
  • Rune Explosion damage decreased.
  • Damage increased.
09/11/2019 09/25/2019
  • Enhanced trait changed to Heavy.
  • No longer launches targets.
  • Rune Explosion placement changed.

Alternative Names

Server Name Translation
Korean Flag.png South Korea 익스트림 룬 버스터 Extreme Rune Buster
Japanese Flag.png Japan エクストリームルーンバスター Extreme Rune Buster
Chinese Flag.png China (Simplified Chinese) 极限符文爆裂 Extreme Rune Buster
German Flag.png Germany Extrem-Runen Extreme Runes
Spanish Flag.png Spain Runas extremas Extreme Runes
French Flag.png France Runes extrêmes Extreme Runes
Italian Flag.png Italy Rune estreme Extreme Runes
Polish Flag.png Poland Ekstremalne Runy Extreme Runes
English Flag.png United Kingdom Extreme Runes
Bresil Flag.png Brazil Destruição Rúnica Extrema Extreme Rune Destruction

Transcendence Rune Slayer Skills
Special Active
RSTrans1.png Triple Saber     RSTrans3.png Overs Geyser     RSTrans6.png Extreme Rune Buster     
RSTrans2.png Enchant Breaker     
RSTrans4.png Awakened Will: Rune Slayer     TransShared.png Awakened One     RSTrans5.png Magic Coating