
What it is



After the 3rd class change, a character keeps growing through Master Level. Webzen describes Master Level as starting at level 400. The points it gives are spent in the Master Skill Tree, a grid of passive bonuses and extra skills that is different for every class.
The tree is opened from the button at the top of the Character Info window. The same button later opens the Skill Enhance Tree for 4th class characters and the Ability Upgrade Core for 5th class ones.
Points and ranks
- Each class has several trees, and each tree is split into ranks from top to bottom.
- A skill of the next rank opens once you have put at least 10 points into a skill of the rank above. Some skills also need 10 points in one specific earlier skill.
- Most entries cost one point per step. After the renewal, the original master skills such as Blood Storm cost 10 points at once instead of 1.
The Master Skill Tree renewal
A large renewal reworked the tree for every class. It removed or changed skills that applied debuffs, added new skills, fixed some skills whose value did not grow with their grade, and changed how some skills are enhanced.
- All classes lost Poison, Lightning and Ice Resistance Increase and Strong Mind.
- The maximum chance of Revenge, Double DMG Rate, Enemy DEF Ignore Rate, Excellent and Critical DMG Rate, and the HP, Mana and SD Full Recovery skills rose from 3.34% to 4.17%.
- Most 3rd classes gained a new rank 7 skill, Increase Max HP.
- Fist Master got Enhance Phoenix Shot (rank 2) and Phoenix Shot Mastery (rank 3); the Lord Emperor's Increases Cmd DMG cap went from 20 to 10.
| 3rd class | Tree in the renewal notes | Example change |
|---|---|---|
| Blade Master | Valor | Blow Expert now raises Blow damage |
| Grand Master | Wisdom | Earth Prison immobilize chance lowered |
| High Elf | Salvation | Evasion no longer clears debuffs |
| Dimension Master | Chaos | Paralyze slow now works by chance |
| Lord Emperor | Justice, Conquest | Iron Defense removed |
| Fist Master | Conquest | Blood Howling bleed chance 10% to 1% |
| Mirage Lancer | Retribution | Magic Pin and Breche stun skills removed |
Later additions
- The Fist Master tree was extended from rank 6 to rank 9.
- Season 13 added Element DEF for all classes and Max HP Intensification for the Rage Fighter.
- Several skill books sold for Ruud by Priest James ask for master points, for example the High Elf's Holy Bolt needs 10 points in Attack Enhancement Mastery.
Older master quest notes
Sources
- MU Online official guide: Master Skill Tree
- MU Online official guide: Fist Master Skill Tree
- MU Online official guide: Season 13
- MU Online official guide: Elf Renewal
- MU Online official guide: Ability Upgrade Cores
- Webzen: MU Online gets Season 16 Part 1 Update and a big summer event
- MU Online Wiki (Fandom): Mirage Lancer
- MU Online Wiki (Fandom): Maps
Game pictures: © Webzen Inc. · muonline.webzen.com


