Vacuum Blades refers to a Wind-element, spell in ALfheim Online.


The spell is a long-range, homing-type vacuum magic with which the caster shoots out five boomerang-like blades of green light.[1]


Þeír[2] slíta[3] fimm[4][5] grœnn[6] vindr.[4]


Seā surīta fimu gurōn vindo[8]

Tear them, five green winds.[9]


Instance Description
Light Novel Anime Manga
Volume 3, Chapter 4 Episode 18 N/A Leafa used this spell in the sky of the Ancient Forest to finish off the last Evil Glancer that tried to retreat with around twenty percent of its hit points (HP) left after all the other lizards in the area were wiped out by Kirito.
Volume 4, Chapter 8 Episode 23 N/A Recon uses this spell to attract the attention of Guardian Knights away from Leafa during the Grand Quest.


  • Recon's version of the spell is the same spell as Leafa's version, despite looking differently. The author has claimed that there is a skill that strengthens spells, accounting for the difference in appearance between the two spells.[10]


  1. Volume 3, Chapter 4
  2. Based on the fact that “seā” is the pronunciation of Þeír in other spells
  4. 4.0 4.1 Approximation of the romaji with the help of Norse -> English dictionaries.
  5. Fimm appears in the circle of Words of Power in other spells.
  6. Based on the fact that “grœnn” is pronounced as “guron” in Concealment.
  7. SAO no Subete.
  8. Romanisation of the katakana
  9. Translation of the kanji and hiragana.
  10. Tweet by the author


Skills and Magic
Default Sword Skills
mostly common in SAO, New ALO, UW
Avalanche - Cyclone - Deadly Sins - Embracer - Explode Arrow[1] - Fell Crescent - Flashing Penetrator - Horizontal - Horizontal Arc - Horizontal Square - Howling Octave[2] - Lightning Fall - Linear - Meteor Break - Meteor Fall - Rage Spike - Reaver - Savage Fulcrum - Senda - Sharp Nail - Single Shot - Slant - Snake Bite - Sonic Leap - Spinning Shield - Star Splash[2] - Starburst Stream[3] - Treble Scythe - Tsumujiguruma - Tsujikaze - Ukifune - Vertical - Vertical Arc - Vertical Square - Vorpal Strike - Whirlwind
SAO Dual Blades - Extra Skills - Fishing - Hiding - Holy Sword - Searching - Tailoring - Tracking - Unique Skills
ALO Original Sword Skill(Mother's Rosario (OSS))
Magic Butterfly Shield - Cold resistance spell - Concealment - Earth Wall - Fireball - Fire Spear - Healing Magic - Hit Point Buff Magic - Hollow Body - Ice Arrows - Metamorphosis - Moonlight Mirror - Night Vision - Purified Surface - Retrieve Arrow - Sacrifice - Searcher - Smokescreen - Strength Buff Magic - Vacuum Blades - Water Breathing - Wind Needles
Project Alicization Sacred Arts - Incarnation - Synthesis Ritual
  1. Only in ALO.
  2. 2.0 2.1 Only in SAO and ALO
  3. Only in SAO