The MU Online Summoner is the game's curse mage: a ranged magic class added in Season 3 who does her work by subtraction. Where a Dark Wizard adds damage, the Summoner takes the enemy's numbers away — attack down, defence down, one target asleep — while a contracted beast from another dimension does the hitting. She is a base class with no unlock gate, she wakes up in Elbeland, and twenty seasons later she is still current design.
This guide covers the Summoner end to end: her full skill list with client-verified levels and mana, the class-change lore straight from the game's quest files, the Sahamutt and Neil contracts, the no-stacking curse rule every party needs to know, her sticks, books, sets and three wing tiers, and how she plays on a Season 22 server today.
| The Summoner at a glance | |
|---|---|
| Role | Ranged curse mage and debuffer — weakens everything, lets beasts and party hit softer targets |
| Weapons | Sticks for the right hand, contract books for the left |
| Introduced in | Season 3, together with Elbeland and Master Level |
| Class chain | Summoner → Bloody Summoner → Dimension Master |
| Creation | Base class — no unlock requirement; spawns in Elbeland |
| Starting stats | HP 70, MP 40, Str 21, Agi 21, Vit 18, Energy 23, Command 0 |
| Main stat | Energy — it feeds the spells, the buffs, the summons and the curse power |
| Signature mechanic | Curses do not stack: a new curse replaces the old one on any target |
| Wings | Misery → Despair → Dimension, and every tier costs 1 HP per successful attack |
| Quest marker | The Eye of the Abyss — proof of the Muren-Semeden promise, and her Bloody Summoner promotion |
Who the Summoner is
The game's own quest files tell the story. The Scroll of the Emperor records a secret agreement between Muren — the ancient wizard whose name MU veterans know from the Book of Magic — and Semeden, leader of the Summoners: in return for Elbeland staying out of the empire, Semeden promised that as long as MU existed, the Summoners would guard the Dimensional Gate. The symbol of that promise is the Eye of the Abyss, and bringing it to the Dimensional Watcher is what promotes her to Bloody Summoner.
The client's own description of her people matches the kit: strong mentality and excellent insight create the most powerful curse spells, and her books pull beings out of another world to work detrimental sorcery against her enemies. Her people are an insular, noble-blooded race with a natural talent for sorcery; their trained Third Eye picks an enemy's weak point at a glance.
The full skill list, with client-verified numbers
Levels and mana below are read from the game's own English client data — the same files our server runs. The curse names correct two older fan spellings: what guides called Life Drain is officially Drain Life, and the second area curse is officially Innovation.
| Skill | Level | Mana | What it is |
|---|---|---|---|
| Drain Life | 35 | 35 | Converts the target's health into yours — the early sustain |
| Sleep | 40 | 0 | Takes one enemy out of the fight until something hits it |
| Explosion (Sahamutt) | 50 | 40 | The Sahamutt contract: he throws himself at the target and detonates, leaving it burning and bleeding HP |
| Chain Lightning | 75 | 70 | Three strikes; alone with one target, all three land on it |
| Damage Reflection | 80 | 0 | Buff on yourself or an ally, scaling off your Energy |
| Berserker | 83 | 0 | A later-addition buff the old guides missed — the client lists it right inside her block |
| Weakness | 93 | 0 | Area curse: attack power drops for a fixed duration |
| Innovation | 111 | 0 | Area curse: defence drops for a fixed duration (fan-named "Innervation") |
| Spirit Blast | 160 | 350 | The modern heavy hit — her 3rd-class-era area nuke |
| Spirit Hook | 180 | 255 | The expanded-era skill that carries her deep into the current game |
Before the kit comes online she borrows Fireball, Power Wave, Meteor and Ice from the Dark Wizard list — which is what keeps her functional through the early levels. And the master tree carries Strengthener and mastery rows for Chain Lightning, Weakness, Spirit Blast and Spirit Hook, so the core keeps growing on the Master Level track her own season introduced.
| From the client files | What it says |
|---|---|
| Official curse names | Drain Life (not Life Drain) and Innovation (not Innervation) — the client's own English strings |
| The pet skills | The buff table names them exactly: Explosion is the "Summoner Shamut attack", Requiem is the "Summoner Neil attack" |
| The master tiers | Spirit Blast of Anger and Spirit Hook of Saturation — the enhanced-era versions of her two big skills, where they land on Season 22 files |
| The tutorial's own advice | "Summoners are unique in that they are capable of mastering various magic spells from scrolls and parchments" — buy them from Marce (36, 219) in Elbeland; weapons come from Rhea (29, 239) |
Curses and contracted beasts
Her pets are not inventory pets. You summon one by equipping the Book of the Other Realm that carries its contract — so the choice of beast and the choice of left-hand item are the same decision. Sahamutt, pack leader of the Mute tribe, brings Explosion: a dive that detonates and bleeds the target over time. Neil, the sacred maiden-shaped beast of Tenes, brings Requiem: a blade strike that opens a wide, draining wound.
Two rules decide how useful the curses actually are. Both land on a curse roll, so the success rate rides on the additional curse power stat of the equipped book — the book is a stat item, not just a summon slot. And curses do not stack: dropping one on a target that already carries a curse removes the first one. This is the thing players get wrong most often with her. In a party, agree who applies what, or you will spend the fight cancelling your own debuffs.
How to build a Summoner
One stat: Energy. It feeds her spells, her Damage Reflection and Berserker buffs, the summons, and the curse power on the books. She drinks more mana than a Dark Wizard does, so mana is the resource you plan around — Drain Life pays the health bill, mana potions pay the rest. With every stat capping at 32,700 on our server, the long-run question is only how fast to pour, never where.
| Situation | How it goes |
|---|---|
| Solo | Shorter reach than a wizard's area spells, but curses make up the difference in clear speed; plan around mana |
| In a party | Debuffs cut the enemy's stats for everyone at once; pairing her with an Energy Elf is the classic maximum-firepower core |
| Event maps | Curse the pack, then Spirit Blast and Chain Lightning clear the room |
| PvP | Curses first, attack skills second; as a caster she folds to anything that closes the distance — Sleep buys the gap back |
| Castle Siege | One Weakness cast softens a whole push; the siege debuff is the job |
Gear: sticks, books, sets
Her weapon list arrived complete in Season 3: four sticks and two books, with the books doubling as her summon source. The stick ladder — Mystery, Violent Wind, Red Wing, Ancient — is Kalutan-mythology in item form, and she backs onto the shared low pool (Kris, Short Sword, Rapier, the small axes, Skull Staff) for exactly the hour it takes to outgrow it.
The armour lines mirror the sticks: Violent Wind (light, windbreak-flavoured), Red Wing (phoenix feathers, magic and spirit power at once) and Ancient (spell-inscribed patterns that amplify magic). On a high-exp server all three are a weekend; treat them as the scenery on the way to current tiers.
Wings, and the HP they cost
Three tiers, every number scaling with the wing's upgrade level — and every tier carries the class's signature drawback: 1 HP per successful attack, forever.
| Wings | Level to equip | Defence | Damage increase | Damage absorb |
|---|---|---|---|---|
| Wing of Misery | 180 + (level × 4) | 10 + (level × 3) | 12 + (level × 2) | 12 + (level × 2) |
| Wing of Despair | 215 + (level × 5) | 30 + (level × 2) | 32 + (level × 1) | 25 + (level × 2) |
| Wings of Dimension | 400 + (level × 4) | 45 + (level × 4), +5 to +8 more at levels 10-13 | 39 + (level × 2) | 39 + (level × 2) |
The Wings of Dimension were the top of the ladder when Season 3 shipped; later seasons stacked tiers above them. And the Eye of the Abyss is not optional flavour: it is the quest proof of the Muren-Semeden promise, and bringing it to the Dimensional Watcher is what makes her a Bloody Summoner. Grab it when it appears — do not hunt for it later.
The full modern ladder, read straight from our server's item table:
| Wings | Level | Defence | Notes |
|---|---|---|---|
| Wings of Curse | 150 | 10 | Shared with Dark Lord, Grow Lancer — the pre-class-change starter wing |
| Wing of Misery | 180 | 10 + 3/lvl | The first true Summoner wing, from the Season 3 notes |
| Wing of Despair | 215 | 30 | Exclusive |
| Wings of Magic | 290 | 37 | Shared with the caster classes |
| Wings of Dimension | 400 | 45 | Exclusive — the third-class wing |
| Eternal Wings | 800 | 170 | Exclusive — the fourth-class wing |
| Wings of Barrier | 1200 | 175 | Exclusive — the fifth-class wing, the top of the ladder on current files |
Play the Summoner on a live server
The Summoner is live and directly selectable on our Season 22 server — high exp, max stats 32,700, events and mini-bosses all day, Elbeland a warp away at 2,000 Zen from level 10.
- Create your account — it takes about a minute
- Download the client, pick the Summoner, and buy your first scrolls from Marce in Elbeland
- New to MU Online? Start with how to start — the Rage Fighter guide covers her melee mirror image if you want the other philosophy
Every skill on the bar, read from our server's own files
The complete list, pulled straight from the skill table our server runs — level to learn, base damage, mana and AG cost, range, the stat gate, the +1-damage-per-X scaling and the imprint value. If another site disagrees with a number here, ours is the one the server actually uses.
| Skill | Level | Damage | Mana | AG | Range | Gate | +1 dmg per | Imprint |
|---|---|---|---|---|---|---|---|---|
| Archangel's will | — | — | 100 | 150 | 0 | — | — | — |
| Blind | — | — | 115 | 25 | 3 | ENE 20 | — | — |
| Stun | — | — | 70 | 50 | 2 | — | — | — |
| Swell Mana | — | — | 35 | 30 | 0 | — | — | — |
| Fire Ball | 5 | 8 | 3 | 0 | 6 | ENE 40 | 30 Energy | +197% |
| Power Wave | 9 | 14 | 5 | 0 | 6 | ENE 56 | 30 Energy | +195% |
| Meteorite | 21 | 21 | 12 | 0 | 6 | ENE 104 | 45 Energy | +190% |
| Ice | 25 | 10 | 38 | 0 | 6 | ENE 120 | 45 Energy | +150% |
| Drain Life | 35 | 35 | 50 | 0 | 6 | ENE 150 | — | +100% |
| Sleep | 40 | — | 20 | 3 | 6 | ENE 180 | — | — |
| Explosion | 50 | 40 | 35 | 0 | 4 | ENE 300 | 150 Energy | +120% |
| Chain Lightning | 75 | 70 | 85 | 0 | 6 | ENE 245 | 200 Energy | +105% |
| Requiem | 75 | 65 | 60 | 4 | 4 | ENE 416 | 150 Energy | +125% |
| Damage Reflection | 80 | — | 40 | 10 | 5 | ENE 375 | — | — |
| Berserker | 83 | — | 100 | 50 | 5 | ENE 300 | — | — |
| Darkness | 83 | — | 100 | 50 | 5 | ENE 300 | — | — |
| Death Scythe | 85 | 75 | 120 | 20 | 6 | ENE 930 | 150 Energy | +125% |
| Pollution | 85 | 80 | 70 | 8 | 4 | ENE 542 | 150 Energy | +125% |
| Lightning Shock | 93 | 95 | 115 | 7 | 6 | ENE 823 | 200 Energy | +105% |
| Weakness | 93 | — | 50 | 15 | 8 | ENE 663 | — | — |
| Nova | 100 | — | 180 | 45 | 6 | ENE 1052 | — | — |
| Innovation | 111 | — | 50 | 15 | 8 | ENE 663 | — | — |
| Aqua Beast | 160 | 100 | 95 | 10 | 7 | ENE 1220 | 170 Energy | +105% |
| Fire Beast | 160 | 100 | 95 | 10 | 7 | ENE 1220 | 170 Energy | +105% |
The master skill tree (3rd class), node by node
Unlocked at the third class change (level 400); every level from 400 to 800 grants one point. Three branches, with the node names read from our server's own tree file:
Defense branch: Durability Reduction (1), PvP Defense Rate Increase, Maximum SD increase, Auto Mana Recovery Increase, Durability Reduction (2), SD Recovery Speed Increase, Automatic HP Recovery Increase, Defense Increase, Elemental DEF Increase, Automatic AG Recovery Increase, Durability Reduction (3), Defense Success Rate Increase, Armor Set Bonus Increase, Vengeance, Energy Increase, Stamina Increase, Agility Increase, Strength Increase, Dimension Wings Defense PowUp, Dimension Wings Attack PowUp, Steel Armor
Attack branch: Attack Success Rate Increase, Explosion Strengthener, Requiem Strengthener, Pollution Strengthener, Chain Lightning Strengthener, Pollution Strengthener, Sleep Strengthener, Lightning Shock Strengthener, Pollution Mastery, Maximum Life Increase, Magic Mastery, Drain Life Strengthener, Maximum Mana Increase, Weakness Strengthener, Innovation Strengthener, Maximum AG Increase, Greatness Mastery, Innovation Mastery, Max HP Boost, Blind
Weapon branch: Attack Rate, Stick Strengthener, Other World Tome Strengthener, Stick Mastery, Other World Tome Mastery, Monster Attack SD Increment, Berserker Strengthener, Darkness Strengthener, Mana Reduction, Monster Attack Life Increment, Berserker Proficiency, Darkness Mastery, Minimum Wizardry/Curse Increase, Monster Attack Mana Increment, Maximum Wizardry/Curse Increase, Increases critical damage rate, Restores all Mana, Restores all HP, Absorb Life, Increases excellent damage rate, Pain of Curse, Restores all SD, Increases double damage rate, SD Absorption, Increases chance of ignore Def
What each stat point does
The classic MU formulas, with this class's damage stat in the first row. Per-point HP and mana are in the table at the top of the page.
| Stat | What each point gives |
|---|---|
| Energy (damage stat) | +1 max wizardry/curse damage per 4 points, +1 min per 9 |
| Agility (everyone) | +1 defense per 3 points, +1 defense rate per 4, +1 attack speed per 20 |
| AG (skill stamina) | +1 per 3 Agility, per 4 Vitality, per 5 Strength; +0.15 per Energy |
| SD (shield) | +1.2 per stat point and per level; +1 per 2 defense |
Class specialization and the EXP party
Two systems the stat screen never explains. First, specialization: as the class damage stat climbs past 1,500 and then 2,000, the character earns bonus damage on the same skill set — up to +45% at the top tier. Second, the classic EXP party: parties built as Dark Lord + Summoner + Magic Gladiator or Rage Fighter earn bonus EXP while hunting together — on top of the combat trios listed above.
Ability cards (5th class): Fire Beast of Saturation, Death Scythe of Fury.
MU Online Summoner FAQ
What is the Summoner in MU Online?
The Summoner is MU Online's curse mage, added in Season 3: a ranged magic class built around subtraction — she weakens enemies with curses, summons contracted beasts (Sahamutt, Neil) through books, and lets the party hit targets that attack and defence have already left. Her chain runs Summoner, Bloody Summoner, Dimension Master.
Which season added the Summoner?
Season 3, together with her home town Elbeland and the Master Level system. She spawns in Elbeland, and the same season's 3.0+ update gave her the two area curses, Weakness and Innovation.
How do you unlock the Summoner?
There is no unlock: the Summoner is a base class, selected directly on the creation screen like the three founding classes, and she spawns in Elbeland. Her promotion to Bloody Summoner is quest-gated — you bring the Eye of the Abyss to the Dimensional Watcher.
What is the best Summoner build?
Energy, full stop. It feeds her spells, her buffs, the summons and the curse power on her books. She is mana-hungry — more than a Dark Wizard — so mana is the resource you plan around, and Drain Life covers the health side from level 35.
What weapon does the Summoner use?
A stick in the right hand (Mystery, Violent Wind, Red Wing, Ancient) and a Book of the Other Realm in the left. The book is both her summon source and a stat item: its additional curse power decides whether her curses land.
Why don't Summoner curses stack?
By design: applying a curse to a target that already carries one removes the first curse. Weakness and Innovation never coexist on the same target — in parties, agree who applies which curse, or you will spend the fight cancelling your own debuffs.
Do Summoner wings cost HP?
Yes — every tier, from Wing of Misery to Wings of Dimension, costs 1 HP per successful attack. It never stops; factor it into your potion routine, and let Drain Life pay part of the bill.
Is the Summoner good for PvP?
As a debuffer, very: Sleep removes one enemy from the fight, Weakness softens a whole group, and the curse power race is real. As a caster she is fragile — anything that closes the distance is her counter, so curse first and keep the gap.
- Season 3's curse mage: weakens targets while beasts and party hit what's left; base class, spawns in Elbeland.
- Skills with client numbers: Drain Life 35, Sleep 40, Explosion 50, Chain Lightning 75, Damage Reflection 80, Berserker 83, Weakness 93, Innovation 111, Spirit Blast 160, Spirit Hook 180.
- Official name corrections: Drain Life (not Life Drain), Innovation (not Innervation); master tiers Spirit Blast of Anger and Spirit Hook of Saturation.
- Curses do not stack — a new one replaces the old; curse power on the book decides if they land.
- Quest canon from the files: Muren and Semeden's promise, the Dimensional Gate, and the Eye of the Abyss that promotes her to Bloody Summoner.
- Build: Energy only; mana is the constraint. Wings: Misery → Despair → Dimension, all at 1 HP per hit.