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"Wielding fel magic is like fixing a machine - you have to break a few things to get it to work."[1]
—Bizzik Sparkcog
An undead warlock converting his life force into fel power.

Fel energy is an entropic magical energy which consumes souls,[2] burns life to create magic,[3] and carries the stench of sulfur[4][5] and decay.[6]

Fel energy is used to power a destructive form of magic[7] known as fel magic. Fel magic, the magic of Sargeras (the God of Fel),[7] can be powered by life force[8] and requires a sacrifice (e.g. a living fish or two, a few strands of seaweed) to fuel it.[9] As a result, this magic is also known as sacrificial magic, which is considered to be a violation of life[10] and nature.[11] This magic, according to bloodmage Lynnore, shares some distinct characteristics with blood magic, a form of life magic.

Potent magic,[12][13] fel portals can be made twice as large and last ten times as long as arcane portals.[14]


Fel energy commonly manifests as an eerie glow, colored green-black, greenish yellow, or purple[15][16]; it always has a sickly look.[17]

Effects on beings

A warlock infusing himself with demonic energy, a process that is nowhere near as painful as it looks. It's much, much worse.[18]
Ysera's consort, the Green dragon Eranikus, seething with fel energy.

Fel energy works a bit like radiation; it permeates the area and seeps into anything in the vicinity. Anything near a source of fel energy shows signs of slight "corruption". Such effects would take a very long time to wear off.[19]

Often wielded by members of the Burning Legion,[7] fel magic has a profound effect on the soul - both the victim's and the caster's.[20] Its use frequently results in corruption that manifests in a physical transformation (such as a change to an individual's eyes or skin color);[7] this process makes the individual to slowly take on the appearance of demons,[21] a fate not even dragons are immune to.[22] In addition, soil, trees, and animals grow thick with fel magic,[23] and fire tainted by fel becomes deadly to the touch.[24]

When fel energy saturates an entity's body, the individual is transformed into a demon - willing or not.[25]

Many authorities on fel magic have thoroughly calculated that it will ultimately consume all who attempt to master it.[26]

Anything touched by the fel emanates a strange green glow.[27]

Fel energy and Demons

By the time of the Second War, Azerothian magi shared the common perception that fel energy was unholy and possibly demonic.[28] They were right, as all of the Burning Legion carry the taint of fel[29][30] within their very blood,[7] explaining another of fel's designations: demonic energy.[17]

The fel energies in Shatter Scar Vale are so chaotic that they manifest as violent entities, pure fel magic given form to lash out at all life

Fel poison

An old lady holding a fel dagger.

The entropic essence of pure fel magic given form is poisonous.[31] The Burning Legion would not be adverse to spreading plague, their weapons are often poisoned, even a slight wound might prove treacherous.[32]

The Hederine demons that occupy the foothills of Mount Hyjal secrete powerful fel poisions, which if left to mature, harden into a dense anti-magic crystal. Not even the immense power of a Doomguard could break the walls of a prison constructed from this material.[33]

In Warlords of Draenor, the Shadow Council's warlocks infused spiders with fel energy so that their venom twists their victims into demonic entities.

In the War of the Ancients the bite of a felhound transmitted poisons to the blood of its victim.[34]


A human warlock channeling fel energy.
Real fel energy consumes souls, hence soul shards. They do not reflect the faces of the viewers, but rather the faces of the souls trapped within.

Warlocks are magical practitioners that seek to understand darker, fel-based magics, including destructive spells.[7] While many warlocks willingly follow the Burning Legion, there are those who work against it, using their magic to fight against.[7]

Born of the eredar race, warlocks are absolutely corrupt and unimaginably powerful. Their chaos magics have burnt out whole worlds and annihilated countless species over the aeons. Kil'jaeden taught the orcs the secrets of warlock magics, but the orcs could never master the powers of entropy and destruction as well as the wicked eredar.[35]

Gul'dan became the first known Orcish student of the demon lord Kil'jaeden and was an avid student of demonic magic. He showed a new brand of magic to his brethren, a terrible new power that reeked of doom. As more and more orcs began to wield warlock magics, the gentle fields and streams of Draenor began to blacken and fade. Over time, the vast prairies the orcs had called home for generations withered away, leaving only red barren soil. The demon energies were slowly killing the world.[36]

The Burning Blade warlocks attune themselves to demonic power by wearing Searing Collars that burn their flesh[37] and amulets of bloodstone can be used to assist in demonic summoning.[38]

Demon Hunters

Demon hunters, disciples of Illidan Stormrage, uphold a dark legacy, one that frightens their allies and enemies alike. The Illidari embrace fel and chaotic magics—energies that have long threatened the world of Azeroth—believing them necessary to challenge the Burning Legion. Wielding the powers of demons they’ve slain, they develop demonic features that incite revulsion and dread in fellow elves.[39]


It is possible for druids who are strong to nurture from seemingly dead fel-tainted branches some measure of life[40] and malignant growth is suspectible to a skilled student of the druidic arts.[41] The druid Marl Wormthorn took up residence in the Tainted Scar and coaxed a forest tainted by demonic energy.[42]

Grammar and usage

Fel is a prefix usually associated with demonology, or more specifically, the Burning Legion. The word itself has no singular meaning (that has been explained at least), but is usually affixed to other words to denote their corruptive nature or connection to demonology.

The game refers at least once to Fel in a singular meaning. An Undercity quest A Sample of Slime... has in its description sentence, "There, slimes are found all around pools of water blessed by the touch of Fel.", so there may in fact be a singular meaning.

A second reference to Fel in singular form is found in the quest Felbound Ancients in which it is said, "The satyrs have been able to corrupt anything they come in contact with, which includes the ancients that made Felwood their home. By the use of the fel, the spirit of the ancient has been bound and tortured, never completely released. The felbind you found is no doubt related." Furthermore, Eridan Bluewind in the Emerald Sanctuary states "... Although the land is named for the very thing that corrupted it..." These references would seem to suggest that fel is indeed some substance, force, or energy. Though, perhaps, it could also refer to a technique or the corrupting influence of the Burning Legion or even demon blood. Fel can also be used as an expletive, similar to "hell" in the real world. Rehgar Earthfury once demanded of Thrall "What the fel is wrong with you?"[43] Goblin Krizz also used it: "What the fel happened..." And Zhahara Darksquall: "Who the fel is..."



In Hebrew, the word "אפל" (Afel) means "dark" or "tainted". The English adjective "fell" means "cruel" or "savage"[1]. The word "fel" can also mean "bile", and according to The American Heritage® Dictionary of the English Language: Fourth Edition (2000), it is related to a number of words of Indo-European origin: yellow, gold, gall, cholera, and felon, to mention a few. The same source indicates that the Indo-European root from which it is derived, ghel, meant "to shine". Fel is also the Swedish word for "Wrong", however, it is pronounced differently (roughly /fiɛl/ as opposed to the English /fɛl/). The Korean word for Fel translates into Hell.


This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
An undead priest "burning" someone's mana by channeling demonic energies into a bolt of negative energy.

Can fel magic be created?

Fel magic might be a magic that isn't created but a magic that has always existed (a "pre-existing" magic, if you will). The druid Broll stated that fel energy burns life to create magic,[3] which means that pre-existing fel energy is required to "burn" life to create magic. A few people conflate fel magic with heat, or fire, but fel magic was stated to be something create-able, which means that fel magic is not the the same as the heat, or fire, that "burns" life in order to create it (the fel magic). Fel magic would be the pre-existing heat, or fire, inside life that is released from life when it is "burned".

Can fel magic be derived from "burning" mana like arcane?

Fel magic might be derivable from "burning" mana like arcane. Although arcane magic is derived from the phase transitions of mana (if mana were water then arcane would be steam pressure,[44] the magic released from mana when it is "burned") fel energy burns life to create magic and mana appears to represent the element of life (mana is the Hawaiian term for life force).

Fel energy, a type of divine energy?

"Look to the sky ... can you see it? Your salvation has arrived."[45]

Fel energy might be a type of divine energy. Divine energy would be the energy of a God/Goddess and Sargeras, who resides in a place that was referred to as hell, is the God of Fel.

[Fire and Brimstone] is an idiomatic expression of the [Hellfire] God uses as a punishment for sinners. θεῖον (Theion, the Greek word for brimstone) means divine and sulfur, a burning material with a green-yellow color that hellfire was believed to consist. Fel energy, which commonly manifests with a sickly greenish yellow color, would be the brimstone (sulfur), the green-yellow material, which hellfire consists and that warlocks use (spells that channel the Fire and Brimstone of hell are there for warlocks to use).[46]

Demons, unholy beings,[47][48] can be harmed by fel energy (demon hunters, who use fel energy against demons, can attest to this). This may be because fel energy might "burn" a demon who has less willpower, a staggering faith, or is more sinful more-so than a demon with more willpower, a stronger faith, or is less sinful.

In the RPG, while many warlocks follow the Burning Legion some draw fel divine power from it.[49]

Fel energy, a type of necromantic/death energy?

Fel energy might be a type of necromantic/death energy. Aaron Rosenberg stated that fel magic is death magic[50] and that it was Blizzard's intention for fel magic to be death magic.[51] Micky, however, stated that fel magic is not the same as death magic even though it involves having life drained,[52] although he did generalize warlocks as necromancers in Blood of the Highborne.

Warlocks have the ability to convert life force into rewards - both material and evanscent - and in Hearthstone the warlock hero power, [Life Tap], takes a small sacrifice of the warlock's life and transforms it into card drawing power. If Life Tap, in World of Warcraft's lore, takes a small sacrifice of the warlock's life and transforms it into fel power then fel energy might be a type of necromantic/death energy. Unholy Armor, a necromantic spell, transforms a portion of the recipient's life force into a phantasmal suit of armor, which suggests that necromancy involves manipulating, or converting, the forces of life (life forces).

Both fel magic and death magic will be addressed in World of Warcraft: Chronicle.[53]

Did the Plague of Undeath carry fel energy?

The land around the grain infused with the Plague of Undeath died, reminding Jaina of what happened with the Dark Portal and the Blasted Lands. When the portal was opened, the demonic energies that sapped the life from Draenor spilled through into Azeroth and the land around the portal died, making Arthas wonder if the plagued grain carried demonic energy.[54] Jaina stated that demonic energy may be involved.[55]

Ner'zhul's Plague of Undeath was a life-draining sickness[56] and victims of this plague became limned with the sickly, strange Green glow[57][58] of something tainted with demonic energies.[59] Fel drains life and anything tainted by fel glows a strange Green glow.

Loreology believes that the Plague isn't fel because fel is entropic (it destroys life to create magic), however, the plague school combines Nature with Shadow (a term used interchangeably with Void), which is speculated to be entropic like fel. Fel "destroys" life and it was as if the unnatural energies that were used to propel the corpses fowards were killing the very earth upon which they shambled.[60] It may be that Loreology was confusing how fel energy is created for how fel magic is powered. Fel energy, which powers fel magic, is "created" by "destroying" life but that energy can be used to manipulate life energy.

Warlocks could leech and taint life energy[61] (which blood was referred to as)[62] with fel energy and felblood, blood corrupted by fel energy, appears to have necromantic properties (the felblood of Brutallus raised Madrigosa as the undead fel dragon called Felmyst when it came into contact with Madrigosa's corpse and the  [Bottled Bileberry Brew], which is created from crushing berries corrupted by the demonic essence of Tyrus Blackhorn, is vile enough to animate the dead).

If life energy tainted/corrupted by demonic energy does possess necromantic properties and seeds contain life energy then the [Seed of Corruption] might represent the Plague of Undeath that was spread across Lordaeron via seed.

Fel energy within the bodies of demons

Demons, who have fel energy within their bodies, might not actually have blood (life force) in their bodies. Fel energy is created by the "destruction" of life force through sacrifice and would "destroy" any life force (similar to a fire destroying any grass, wood, etc.) in order to sustain itself.

To watcher Grimeo demon blood does not seem like blood but more like liquid rot[63] and when the deceased pit lord Aggonar's felbood mixed with water from the pools that were once sacred to the draenei animate blistering rots were spawned.


The RPG Icon 16x36.png This section concerns content exclusive to the Warcraft RPG and is considered non-canon.

The ultimate manifestation of the demonic arcane on Azeroth is fel energy. This energy, which most commonly manifests itself as ghastly, green-yellow flame, is arcane magic at its most corrupt, for it employs the blood of demons. Spells with the fel descriptor are very difficult to resist. Casting a fel spell is described by many spellcasters as a euphoric experience. If arcane magic is an addiction, fel magic is the embodiment of the drug in its purest form.[64]

When the demons brought death and damnation to Azeroth, they also carried their own brand of magic to the world. Fel magic is pure, evil and arcane; it resides in the blood of demons. This blood has magical properties; it is addictive to arcane magic users and can be used to create evil weapons. When a weapon is forged in demon blood, it becomes a fel weapon. It glows with a foul, yellow-green fire and deals extra damage to good-aligned opponents. Some arcanists can cast fel spells, perhaps after drinking demon blood.[65]

Since the Burning Legion returned to Azeroth, the world's heroes have encountered fel weapons and fel magic at an increasing frequency. As demon cults continue to fester and grow in Desolace, Ashenvale Forest, and other remote corners, gruesome sacrifices are held to entice demons into giving their blood in trade. The cultists use their blood to enchant the weapons that they hope will bring about their masters' ultimate victory.[64]

Unlike arcane magic the use of fel magic corrupts the user’s body and soul. By contrast the chief danger of arcane magic is that using it inevitably leads to the desire to wield greater power: power that only fel magic can provide.[66]

Fel offerings

A group of blood elves in Sunwell Plateau, draining fel energy from a crystal.

Demons sometimes tempt spellcasters by offering small amounts of their blood in exchange for services. If the recipient drinks the demon's blood within 24 hours of the offering, the next arcane spell he casts will be empowered by the fel. Fel blood is highly addictive as well as corruptive. Anyone who drinks it risks becoming dependent on fel blood, and unless the person continues to drink it daily, he will suffer withdrawal symptoms. He has a chance of breaking the addiction seven days after first drinking the fel blood.[64]

Fel poison

Fel-poisoned creatures are another threat from the Twisting Nether. They are starting to appear in places where the Burning Legion is strongest. When a creature with a natural poison attack is imbued with fel energy, its venom becomes more difficult to resist.[64]


  • Demons smell of sulfur, which is a greenish-yellow material which hellfire was believed to be comprised of.

See also


  1. ^ WoW TCG - Bizzik Sparkcog
  2. ^ Jeremy Feasel on Twitter (2015-07-10). Retrieved on 2015-08-02. “This is one of the few things I think I know. Real Fel energy consumes souls, yes. Hence, soul shards.”
  3. ^ a b The Comic Volume 2 - Through the Mirror Darkly.
  4. ^ Cycle of Hatred pgs. 183-185
  5. ^ Courtyard of Lights
  6. ^ N [55] Deadwood Ritual Totem
  7. ^ a b c d e f g Ultimate Visual Guide
  8. ^ The Comic Volume 4 - Hard Choices. "We will use the injured gryphon's life force to power our fel magic."
  9. ^ The Comic Volume 4 - Whispers. "Let me help you fight that monster...for fel magic is powerful...and we are near the sea. It requires but an insignificant sacrifice--a living fish or two, a few strands of seaweed--to fuel the magic."
  10. ^ N Warlock [90] Seeking the Soulstones - Blade's Edge Memory
  11. ^ Beyond the Dark Portal pg. 596
  12. ^ Tides of Darkness pg. 438
  13. ^ Tides of Darkness pg. 78
  14. ^ Journal of Archmage Antonidas
  15. ^ Rise of the Horde pg. 326 - Other shaman followed suit, summoning the same eerie purple circles and cubes, manifesting creatures seemingly out of thin air. Some were large, shapeless things in hues of blue and purple, hovering ominously. Other beings were fair to look upon, save for their hooved feet and bat-like wings.
  16. ^ TCG Card: Fel Summon
  17. ^ a b Rise of the Horde
  18. ^ WoW TCG - Demonic Infusion
  19. ^ Ask CDev - Round 3
  20. ^ WoW TCG - Soul Trap
  21. ^ The Maker - Dungeon Journal
  22. ^ WoW TCG - Feldrake
  23. ^ N [45] Culling the Corrupted
  24. ^ Mount Journal entry for  [Felfire Hawk]
  25. ^ The Warcraft Encyclopedia: Burning Legion
  26. ^ WoW TCG - Mazar
  27. ^ H [52] The Strength of Corruption
  28. ^ Tides of Darkness
  29. ^ H [62] In Need of Felblood
  30. ^ The Demon Soul - "This foul magic that is an inherent part of demons kills everything." - pg. 170
  31. ^ N [48] Collecting Corruption
  32. ^ The Sundering pg. 100
  33. ^ N Warlock [60] The Prison's Casing
  34. ^ The Demon Soul pg. 242-247
  35. ^ Warcraft III: Reign of Chaos manual, pg. 136
  36. ^ Kil'jaeden and the Shadow Pact
  37. ^ H [12] Skull Rock
  38. ^ H [33] Foul Magics
  39. ^
  40. ^ Stormrage pg. 854 - It was possible for those who were strong to nurture from seemingly dead plants, even trees, some measure of life. For any true plant, Broll would have had no qualms trying, though he also understood the limits. But now he sought to revive something monstrous. His shan’do had revealed all concerning the truth about the branch and the tree from which it had originally come. Broll could sense the wrongness, the demonic essence, even in this tiny piece.
  41. ^ Stormrage pg. 857
  42. ^ H [58] The Demons and the Druid
  43. ^ Thrall: Twilight of the Aspects
  44. ^ Dave Kosak on Twitter (2014-04-27)
  45. ^ http://www.wowcards.info/card/crown/en/47/Fire-and-Brimstone
  46. ^ Warlock (Warcraft I)
  47. ^ Rise of the Horde pg. 218
  48. ^ Rise of the Horde pg. 415
  49. ^ Demonology (RPG)
  50. ^ https://twitter.com/gryphonrose/status/605082444518330368
  51. ^ https://twitter.com/gryphonrose/status/570703784629932033
  52. ^ Micky Neilson on Twitter (2014-09-15)
  53. ^ https://twitter.com/MickyNeilson/status/518841317208510464
  54. ^ Arthas: Rise of the Lich King pg. 252-253
  55. ^ Arthas: Rise of the Lich King pg. 265
  56. ^ http://classic.battle.net/war3/Undead/
  57. ^ Arthas: Rise of the Lich King pg. 286
  58. ^ Arthas: Rise of the Lich King, 324
  59. ^ Arthas: Rise of the Lich King, 542
  60. ^ Arthas: Rise of the Lich King pg. 471
  61. ^ Aaron Rosenberg on Twitter (2015-05-31)
  62. ^ Thrall: Twilight of the Aspects pg. 366 - She'd felt her brother die, felt his life energy, the blood of a scion of Malygos, being harnessed and channeled in a way that was disturbingly familiar to her.
  63. ^ A [56] The Vile Blood of Demons
  64. ^ a b c d Johnstone, Mike. Magic & Mayhem, 24. ISBN 9781588469540. 
  65. ^ Arthaus. World of Warcraft: The Roleplaying Game, 252. ISBN 9781588467812. 
  66. ^ Johnson, Luke. Dark Factions, 37. ISBN 9781588464460.