MU Online skills by class: complete ability guide for all 6 classes

MU Online's 6 Season 6 classes each have a distinct skill identity. Understanding which skills define each class — and which to prioritize — determines how effectively a character farms, supports, and fights.

Dark Knight — skill guide

Complete DK skill list (Season 6):

ATTACK SKILLS:

1. Slash (basic):
→ Standard sword/axe strike
→ Single target, minimal mana cost
→ Used at very low levels before better skills are available

2. Twisting Slash (CORE SKILL — learn first):
→ Spins in a circle hitting all enemies around the DK
→ AoE range: medium radius
→ Damage: moderate-high per hit
→ Usage: every farming session, maintain constantly
→ Why it's essential: DK's primary AoE = primary farming tool
→ Animation: DK spins with weapon extended

3. Death Stab (CORE SKILL — single target):
→ A powerful forward lunge attack
→ Single target, very high damage
→ Usage: boss fights, PvP, targets where AoE is not needed
→ Why it's valuable: highest DPS on single targets

4. Rageful Blow (PvP SKILL):
→ A massive power strike
→ High single-hit damage with knockback effect
→ Usage: primarily PvP, opening burst combo
→ Why it's valuable: the knockback repositions opponents

5. Greater Fortitude (passive/active):
→ Increases the DK's max HP
→ Important at high levels where HP pool determines survival
→ Learn this as you invest in VIT

6. Death Poison (advanced, Blade Knight+):
→ Applies a poison DoT on hit
→ Small additional damage over time
→ Useful against single strong targets

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Skill priority for DK:

PvM farming priority:
1. Twisting Slash (immediate — primary farming tool)
2. Death Stab (for bosses and tanking priority targets)
3. Greater Fortitude (survive better at level 100+)
4. Secondary skills as character grows

PvP priority:
1. Death Stab (primary burst)
2. Rageful Blow (opener for knockback)
3. Twisting Slash (group fights, Castle Siege)
4. Greater Fortitude (survive longer)

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Where DK Skill Books drop:

Twisting Slash Book: drops from mid-level monsters (Dungeon area and above)
Death Stab Book: drops from higher monsters (Lost Tower, Atlans)
Rageful Blow Book: often from specific bosses or higher areas
→ Check your server's specific drop tables for exact sources

Dark Wizard — skill guide

Complete DW skill list (Season 6):

ATTACK SKILLS:

1. Energy Ball:
→ Basic magic projectile
→ Single target
→ Early-game skill — replaced by better options

2. Meteorite / Meteor:
→ A large rock dropped from above on the target
→ Single target, moderate-high damage
→ Good for: single-target situations where mana is a concern
→ More mana-efficient than Nova for single targets

3. Thunder:
→ Lightning strike on a single target
→ Electric element, high damage
→ More useful in PvP (applies a brief electrical effect on some servers)

4. Chain Lightning:
→ Lightning that chains between multiple nearby targets
→ AoE capability
→ Useful in packs of 2-5 clustered enemies

5. Nova (CORE SKILL — ESSENTIAL):
→ THE defining DW skill
→ Creates a massive magical explosion at the target location
→ Hits ALL enemies within a large radius
→ Damage: extremely high for the level range
→ Mana cost: HIGH (requires Mana potions or high ENE)
→ When obtained: transforms DW's farming from mediocre to exceptional
→ Where to learn: Skill Book from specific monster drops (late game)

6. Ice Storm (Grand Master):
→ AoE ice spell covering an area
→ Applies slow/freeze effect to enemies
→ Good farming alternative to Nova in specific situations
→ Lower mana cost than Nova, slightly less damage

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Skill priority for DW:

Step 1 (level 1-100):
→ Meteorite: primary skill (highest single-target damage available early)
→ Chain Lightning: secondary (some AoE before Nova)

Step 2 (level 100+):
→ Nova: obtain as soon as the Skill Book drops/is available
→ This is the moment DW farming transforms

Step 3 (Grand Master):
→ Ice Storm: additional AoE option
→ Enhanced Nova variants if available on your server

PvP skills for DW:
→ Nova (burst AoE)
→ Thunder (single-target burst)
→ Ice Storm (apply slow/control)
→ Combination: Thunder → Ice Storm (slowed) → Nova (AoE finish)

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Nova mastery tips:

Nova positioning:
→ Click slightly AHEAD of the target group, not directly on a monster
→ The explosion radius is large — click in the CENTER of a monster group
→ Experiment with click distance for maximum monster coverage

Nova mana management:
→ Nova uses large amounts of mana per cast
→ High ENE stat: larger mana pool + more magic damage
→ Large Mana Potions: essential for sustained Nova farming
→ Mana After Kill (Excellent option): reduces potion dependency

Fairy Elf — skill guide

Complete Elf skill list (Season 6):

SUPPORT SKILLS (Energy Elf specialty):

1. Greater Defense (buff):
→ Applies a defense increase to ONE ally or self
→ Duration: 30-60 seconds
→ Usage: apply to party DK before boss fights or dangerous pulls

2. Greater Damage (buff):
→ Applies a damage increase to ONE ally or self
→ Duration: 30-60 seconds
→ Usage: apply to party DW or DK for farming efficiency

3. Recover (heal):
→ Restores HP to a targeted ally
→ Healing amount: scales with Elf's ENE stat
→ Core skill for Energy Elf builds

4. Soul Barrier (THE support skill):
→ Creates an absorb shield on a target ally
→ Reduces damage taken by a percentage
→ Most important support skill in the game
→ Apply to DK tanks before and during every boss fight
→ Duration: limited, must be reapplied

ATTACK SKILLS (Attack Elf specialty):

5. Triple Shot:
→ Fires 3 arrows simultaneously in a spread
→ Can hit multiple targets
→ AGI build: primary attack skill

6. Penetration Arrow:
→ Fires an arrow that penetrates through multiple targets in a line
→ Good in corridors or clustered enemies

7. Ice Arrow:
→ Arrow that applies a freeze effect
→ Frozen enemies: can't move temporarily
→ PvP utility: freeze a melee class, maintain safe distance

8. Summon Creature:
→ Summons a creature that fights alongside the Elf
→ Additional damage source
→ Higher skill level: stronger creature

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Skill priority for Elf:

Energy Elf (support) priority:
1. Soul Barrier (FIRST — the most important skill for any Elf)
2. Recover (healing for group)
3. Greater Defense (party buff)
4. Greater Damage (party buff)

Attack Elf (AGI/damage) priority:
1. Triple Shot (AoE/spread damage)
2. Penetration Arrow (line damage)
3. Ice Arrow (PvP control)
4. Soul Barrier (even attack Elfs should have this for party utility)

Critical Elf skill fact:
→ Soul Barrier is the reason groups bring Elf to boss fights
→ Without Soul Barrier: DK takes 100% damage
→ With Soul Barrier: DK takes 70-80% damage (approximate)
→ This 20-30% damage reduction keeps party members alive through boss AoE

Magic Gladiator — skill guide

MG's unique position:

MG is the hybrid class — has skills from BOTH DK and DW trees plus exclusive skills:

PHYSICAL SKILLS (from DK tree):
→ Twisting Slash (same AoE as DK version)
→ Death Stab (same single-target as DK version)

MAGICAL SKILLS (from DW tree):
→ Meteor, Thunder variants
→ Some servers: access to Ice Storm

MG EXCLUSIVE SKILLS:

1. Frost Nova (SIGNATURE MG SKILL):
→ Creates a nova of ice energy around MG
→ AoE damage + FREEZE effect on all hit enemies
→ Frozen enemies: cannot move for 2-4 seconds
→ This is MG's defining advantage: AoE with crowd control built in
→ The freeze is particularly effective in: PvP (locks opponents) and tight farming spots

2. Gigantic Storm (advanced):
→ Magical skill dealing very high damage
→ More powerful than standard Nova equivalent
→ Acquired at higher levels/after evolution

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MG skill strategy:

Hybrid farming approach:
→ Close to a group: Frost Nova (freeze + AoE damage simultaneously)
→ While frozen: follow up with Twisting Slash (melee AoE on frozen targets)
→ Result: combination higher DPS than either skill alone

PvP approach:
→ Frost Nova: freeze the opponent
→ While frozen: Death Stab (highest single-target damage)
→ Follow-up: if target survives, resume Frost Nova cycle

MG's advantage over pure DK:
→ Frost Nova's freeze gives MG more control than DK in the same situation
→ A DK fights a moving target; an MG's target is periodically frozen
→ This makes MG's farming slightly more efficient in monster-dense areas

Dark Lord — skill guide

DL skill list (Season 6):

ATTACK SKILLS:

1. Fireburst (basic):
→ A fire projectile at a single target
→ Early-game DL attack

2. Force Wave:
→ A wave of force pushing outward from the DL
→ Moderate AoE, knockback effect
→ Useful for pushing monster clusters

3. Fire Scream (CORE SKILL):
→ An AoE fire explosion around the DL
→ Damages all enemies in radius
→ Damage scales with STR + CMD
→ Primary farming skill for DL
→ Important: the AoE requires DL to be close to monsters (close range)

SUPPORT SKILLS:

4. Summon (UNIQUE UTILITY):
→ Teleports a party member to the DL's location
→ Requires: the target player must be in a party with the DL
→ Uses: repositioning allies during Castle Siege, pulling players to a boss location
→ No combat damage — pure utility
→ One of the most underrated support skills in MU Online

PET SKILLS:

5. Dark Spirit (Dark Raven command):
→ Commands the Dark Raven to attack a target
→ Dark Raven: a combat bird companion exclusive to DL
→ Scales with the Raven's level and DL's stats
→ Additional damage source during combat

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Dark Lord skill priority:

PvM priority:
1. Fire Scream (core AoE farming)
2. Force Wave (supplementary pushback/AoE)
3. Dark Spirit (Raven attacks = extra DPS)
4. Summon (utility — learn for party benefit)

PvP/Castle Siege priority:
1. Fire Scream (burst AoE in fights)
2. Summon (reposition allies during siege)
3. Force Wave (pushback in defense)
4. Dark Spirit (additional DPS targeting key enemies)

Summoner — skill guide

Summoner skill list (Season 6):

DOT SKILLS (over time damage):

1. Drain Life (CORE SKILL):
→ Continuously drains HP from a target
→ Works over time (DoT — damage over time)
→ Damage per tick: scales with ENE
→ Also has a self-healing component on some versions (heals Summoner as it drains)
→ Usage: the primary single-target DPS skill for Summoner

2. Decay:
→ Applies a curse that reduces target's defense
→ Combined with damage: target takes more from all sources
→ Useful as a debuff before applying Drain Life

3. Pollution:
→ Applies a poison-type curse
→ DoT damage over several seconds
→ Stacks with Drain Life for more sustained damage output

SUMMON SKILLS:

4. Summon Sahamutt / Requiem / Dark Raven (class-specific creatures):
→ Summons a creature that fights alongside the Summoner
→ Different summons available at different levels/class evolutions
→ The summoned creature: independently attacks nearby enemies
→ Higher skill level: stronger creature

AREA SKILLS:

5. Explosion:
→ AoE explosion at the target location
→ Damages all enemies in radius
→ Not as powerful as Nova but the Summoner's AoE option
→ Good for clearing groups when close

6. Reflection:
→ Returns a portion of received damage back to the attacker
→ Useful against: physical attackers in PvP
→ More of a PvP survival tool than PvM

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Summoner skill priority:

PvM farming:
1. Drain Life (primary — always active)
2. Explosion (AoE when groups cluster)
3. Pollution (amplify total damage)
4. Summon creature (passive extra damage)

PvP:
1. Drain Life (sustained damage)
2. Reflection (make opponents hurt themselves)
3. Pollution/Decay (debuff then burst)
4. Explosion (AoE in group fights)

See also the per-class build guides (which stats to pair with each skill), the Master Level mastery guide (how ML points enhance skills), and the S6 class overview (which classes fit which playstyles).

Frequently asked questions