In MU Online, Decay is used as an offensive magical attack skill. It is available to: Alchemist, Dark Wizard, Lemuria Mage. The skill requires character level 96, which makes it an early‑game option for your build. It is an Energy‑based magical skill, so planning your stat points around that attribute will help you get the most out of it. Its base damage value is 95 before weapon, equipment and buff modifiers are applied. Its Imprint value is 110, which helps you compare how efficiently it benefits from Imprint or mastery upgrades versus other skills in the same tree.

These values reflect the MU Online Season 21 skill data used on MUOnline.ai, so you can check requirements before you invest stat points and plan your PvE and PvP rotations around the skills your class can actually use.

Skill Damage & Requirements

Base Damage 95
Imprint Value 110
Required Level 96
Required Strength 0
Required Dexterity 0
Required Vitality 0
Required Energy 953
Required Command 0
Primary stat orientation Energy‑based magical skill

Eligible Classes & Evolution Stage

  • Dark Wizard 2nd class (1st evolution quest complete)
  • Lemuria Mage 2nd class (1st evolution quest complete)
  • Alchemist 2nd class (1st evolution quest complete)

The class stage tells you which evolution of a class can use the skill: 1st = starting class, 2nd = after the second class quest, 3rd = third class, 4th = 4th class / majestic, 5th = 5th class evolution.