Last updated: September 7, 2026

MU Online Monster Soul Converter – Weekly Souls for Ruud & Pentagrams

The Monster Soul Converter is the Season 19+ weekly grind loop: buy a converter for your level band, hunt the monster it names until it has absorbed 500 souls, and turn it in for Ruud plus a pentagram or errtel roll. Every number here is read from a Season 21 server’s soul-conversion file and the client reward texts.

On this page: How It Works · The Five Converters · Rewards · Tips · FAQ

How It Works

Rule	Details
Buying	Converters are sold by the NPC for Ruud/Zen; you may buy 3 per week, the counter resets every Thursday 10:30 server time.
Filling	Carry the converter and kill the listed monster on the listed map. Each kill has a 45% chance to add a soul; the converter completes at 500 souls (about 1111 kills on average).
One monster type	Each converter accepts souls from one monster type at a time (ReqSoulNumber = 1) — pick the map, not the mob.
Turning in	A full converter is exchanged for a guaranteed reward plus a random reward from two pools (Ruud pool and elemental pool).

The Five Converters – Where to Farm Souls

Each converter level lists the maps and the exact monster whose kills count. Higher converters point at higher maps; the soul chance and the 500-soul requirement are the same on every level.

Level 1 – [Lvl1] Monster Soul Converter

Map	Monster that gives souls	Souls needed	Chance per kill
Aida	Death Tree	500	45%
Kanturu Ruins	Berserker Warrior	500	45%
Uruk Mountain	Uruk Devil Fairy	500	45%
Nars	Nars Devil Fairy	500	45%
Raklion	Dark Mammoth	500	45%
Swamp of Calmness	Sapi Queen	500	45%

Level 2 – [Lvl2] Monster Soul Converter

Map	Monster that gives souls	Souls needed	Chance per kill
Ferea	Ferea Knight	500	45%
Nixies Lake	Paraca	500	45%
Deep Dungeon 2	Deep Dungeon Cyclops	500	45%
Deep Dungeon 4	Deep Dungeon Chief Skeleton	500	45%
Deep Dungeon 5	Deep Dungeon Thunder Lich	500	45%
Swamp of Darkness	Swamp Ent	500	45%

Level 3 – [Lvl3] Monster Soul Converter

Map	Monster that gives souls	Souls needed	Chance per kill
Kubera Mine	Mine Digger	500	45%
Abyss of Atlans 1	Bahamut of Abyss	500	45%
Scorched Canyon	Scotched Warrior	500	45%
Red Smoke Icarus	Red Alquamos	500	45%
Arenil Temple	Temple Ogre	500	45%
Ashy Aida	Ashy Destry	500	45%

Level 4 – [Lvl4] Monster Soul Converter

Map	Monster that gives souls	Souls needed	Chance per kill
Blaze Kethotum	Crimson Lycan	500	45%
Kanturu Underground	Underground Persona	500	45%
Ignis Volcano	Magma Gladiator	500	45%
Bloody Tarkan	Bloody Mutant	500	45%
Bloody Tarkan (Elite)	Storm Guard	500	45%
Twisted Karutan	Twisted Crypta	500	45%

Level 5 – [Lvl5] Monster Soul Converter

Map	Monster that gives souls	Souls needed	Chance per kill
Kardamahal Underground Temple	Devil Sword	500	45%
Swamp of Destruction	Shadow Master of Destruction	500	45%
Aquila's Temple	Aquila Warrior	500	45%
Raklion of Oblivion	Giant Mammoth of Oblivion	500	45%

Rewards by Converter Level

Converter	Ruud pool	Elemental pool
Level 1	Guaranteed - 400 Ruud Random - 200 ~ 4000 Ruud, [Bound] Bless of Light (Lesser)	Guaranteed - Elemental Rune Random - Common Pentagram, Rare Pentagram, Unique Pentagram, 1 Rank 1 Enhanced Erthel, 1 Rank 7 Enhanced Erthel, Elemental Rune, [Bound] Bless of Light (Lesser)
Level 2	Guaranteed - 400 Ruud Random - 200 ~ 4000 Ruud, [Bound] Bless of Light (Lesser)	Guaranteed - Elemental Rune Random - Common Pentagram, Rare Pentagram, Unique Pentagram, 1 Rank 1 Enhanced Erthel, 1 Rank 7 Enhanced Erthel, Elemental Rune, [Bound] Bless of Light (Lesser)
Level 3	Guaranteed - 400 Ruud Random - 200 ~ 4000 Ruud, [Bound] Bless of Light (Intermediate)	Guaranteed - Elemental Rune Random - Normal Pentagram, Rare Pentagram, Unique Pentagram, 1 Rank 1 Enhanced Erthel, 1 Rank 7 Enhanced Erthel, Elemental Rune, [Bound] Bless of Light (Intermediate)
Level 4	Guaranteed - 400 Ruud Random - 200 ~ 4000 Ruud, [Bound] Bless of Light (Intermediate)	Guaranteed - Elemental Rune Random - Normal Pentagram, Rare Pentagram, Unique Pentagram, 1 Rank 1 Enhanced Erthel, 1 Rank 7 Enhanced Erthel, Elemental Rune, [Bound] Bless of Light (Intermediate)
Level 5	Guaranteed - 400 Ruud Random - 200 ~ 4000 Ruud, [Bound] Bless of Light (Intermediate)	Guaranteed - Elemental Rune Random - Normal Pentagram, Rare Pentagram, Unique Pentagram, 1 Rank 1 Enhanced Erthel, 1 Rank 7 Enhanced Erthel, Elemental Rune, [Bound] Bless of Light (Intermediate)

Tips

Tip	Why
Use all three converters every week	Three converters = 1,200 guaranteed Ruud plus three shots at 4,000 Ruud and a Unique pentagram, for hunting you would do anyway.
Match the converter to your hunting map	Only the listed monster counts. A level-3 converter filled in Kubera Mine needs the mine’s named monster, not everything there.
Expect ~1,100 kills	45% soul chance on 500 souls; with MU Helper on a farm spot that is one session.
Rank-7 errtels are the jackpot	The elemental pool can hand out a Rank 7 enhanced errtel — weeks of Spirit Powder saved in one turn-in.

Continue Reading

Guide	Why it helps
Ruud	What to spend the Ruud on.
Pentagrams & Errtels	The pentagrams and errtels the elemental pool pays out.
Maps	Spawn maps for every farming map listed above.

FAQ

What is the Monster Soul Converter?
A weekly item (levels 1 to 5) that absorbs souls from a specific monster on a specific map. At 500 souls it is exchanged for guaranteed Ruud or an Elemental Rune plus a random reward that can include Unique pentagrams and Rank 7 errtels.

How many converters can I buy per week?
Three on this server; the limit resets every Thursday at 10:30.

How many kills does a converter take?
500 souls at a 45 percent chance per kill of the listed monster - roughly 1,100 kills.

Which monster gives souls?
Exactly one monster type per map, listed in the converter tables above (for example the Level 1 converter takes souls in Aida, Kanturu Ruins, Uruk Mountain, Nars, Raklion or Swamp of Calmness).