Log Horizon Wiki

Astral Hypno is an Enchanter attack and debuffing spell. It is the backbone of the Freezer build, which utilizes Astral Hypno to control enemy groups.[1]


Astral Hypno is a debuffing spell that puts the target to sleep for a maximum duration of 20 seconds. The duration depends on individual monster level and debuff resistance; in harder raid battles, it can be lowered to 4 seconds. While asleep, the target cannot perform any actions. However, if the target receives any damage during this period, the effect of the spell is cancelled.[2][3]

Because the cooldown period for Astral Hypno is only 5 seconds, it's possible for a skilled Enchanter to keep two enemies incapacitated simultaneously by repeatedly recasting the spell on both. Certain equipment can make this spell even more effective, hypothetically allowing a skilled caster to keep even three or four opponents frozen at once.[3]


  • Astral Hypno's maximum duration has varying descriptions. In Volume 1, it lasts "a mere dozen seconds"[4] while in Volume 7, it can last up to 20 seconds (but only 4 seconds on the Orc Jellies due to their stats).[2] The skill's atwiki description states the maximum duration is 10 seconds, based on the first volume's information.



  1. Log Horizon web novel: Chapter 73
  2. 2.0 2.1 Log Horizon light novel: Volume 7, Chapter 2, Part 5
  3. 3.0 3.1 atwiki, Enchanter https://w.atwiki.jp/loghorizon/pages/68.html
  4. Log Horizon light novel: Volume 1, Chapter 3, Part 3