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For the Fel from the Warcraft film universe, see Fel (film universe).
A warlock who has used (or is using) [Life Tap], which takes a small sacrifice of the warlock's life and turns it into power.
"Wielding fel magic is like fixing a machine - you have to break a few things to get it to work."[1]
Bizzik Sparkcog

Fel magic (also known as the language of chaos),[2][3] is a destructive form of magic often used by the members of the Burning Legion. It is demonic, entropic, chaotic and extremely volatile. Its use frequently results in the alteration of the individual, or corruption, which manifests as a physical transformation such as a change to an individual's eyes or skin color, or heavy genetic mutations. All of the Burning Legion carry the taint of fel magic within their very blood, allowing them to spread greater evil.[4]

Origins and characteristics

"Sacrificial magic was considered the greatest violation of life and we were attuned to instantly punish those who delved into such... delicious sorcery."[5]

Order is most commonly perceived in reality as arcane magic. Arcane energy is innately volatile, and wielding it requires intense precision and concentration. Disorder, on the other hand, manifests as highly destructive fel magic, a destructive and extremely addictive energy originating as a result of the mutual destruction of Light and Void as they collide on a cosmic scale in the Twisting Nether.[6] Fel is fueled by drawing life from living beings and consuming their souls , utterly destroying them in the process.[6] It requires but an insignificant sacrifice—a living fish or two, a few strands of seaweed—to fuel the magic.[7]

When a soul is devoured by fel energies, it produces more fel and is utterly destroyed in the process.[8] An echo of the soul known as a soul shard (or soul fragment) can be produced by the spell caster. Soul shards can be used to power spells, or to create a connection to the Twisting Nether, pulling a demon through against its will.[9]

Fel energy is countered by arcane energy, its polar opposite.[10] Fel works like radiation, permeating an area and seeping into anything in the vicinity. Anything near a source of fel energy will eventually show signs of slight corruption.[11] Fel can also pool into a green goop when it's in physical form.[12] Pit lord blood is literal fel goo. When drank, their blood causes mutations such as growth of spikes, horns, scales and wings. Felfire is flame born of fel magic.[13] It is deadly to the touch,[14] burns much hotter than normal fire,[15] and cannot be put out by regular means,[16] though the water of enchanted water elementals seems to be able to do the trick.[17]

Fel, like all other types of magic, can be animated[18] ; an example of this are the Flames of Azzinoth. Fel is mainly used to cause massive destruction by its wielders.[19] But it can also be used to turn oneself invisible,[20] to scry,[21] and to create portals much more efficient, long-lasting and easier to create than with arcane magic.[19] It can be used to give momentum and propel a boat[20] for example, and is used to power the monstrous machines of the Burning Legion.[22] Fel can also be used to heal, though it leaves a mark on creatures who are not fel-based.[23] It can also be used to breathe life into constructs such as infernals, or in a necromantic way by resurrecting demons as undead.[24][25]

Effects on beings

A warlock holding a Soul Shard.
Soul Trap TCG.jpg

Entropic Horrors

Fel energy can manifest as entropic horrors, pure fel magic given form to lash out at all life. The essence they drop is poisonous[26] and would poison living beings with a sickness that drains life.


A warlock transforming because of fel energy.
...fel energies: the dark magic of demons, all corrupting and all-consuming if the craving for it was not held in check.[27]

All creatures who use the power of fel magic, willingly or otherwise, slowly take on the appearance of demons.[28] Demons are immortal beings linked to the Nether who feed upon magic and life. They delight in inflicting suffering, spreading corruption and destroying all that is good. Mortal beings can be turned into demons themselves by being infused with fel energy,[29] the dark and corrupting essence wielded by the Burning Legion. Demon souls are tethered to the Twisting Nether and as such, even if a demon dies in the physical universe, their spirit will return to the Nether where they will reform once again. To truly destroy a demon, the creature must be killed in the Nether itself, in places where it bleeds into mortal worlds, or in areas saturated with fel energies.[30]

Eredar and draenei

Sargeras infused the eredar with fel energy, turning them into demons, and found quick use for his new fel-corrupted converts. The eredar settled in as commanders within the Burning Legion. Under the eredar's leadership, the ranks of the Burning Legion swelled with new demonic races, gathered from the Twisting Nether and the worlds of the Great Dark Beyond.[31]

After the genocide of the draenei, some of them who had fought the Old Horde and survived found that they had been affected by the fel energies wielded so freely by the corrupted orcs. These draenei have since mutated and devolved into the Broken and then further into Lost Ones. Their warped bodies bear only a rough resemblance to the proud draenei they once were, and quite a few have lost their grip on sanity.[32]


Gul'dan before Illidan's crystal-prison.

Gul'dan was the first orc warlock and is considered one of the most powerful mortal warlocks to have ever existed. He taught other young orcs the arcane arts and strove to eradicate the orcs' shamanistic traditions. Kil'jaeden, seeking to tighten his hold over the orcs, helped Gul'dan found the Shadow Council, a secretive sect that manipulated the clans and spread the use of fel magic throughout Draenor. As more and more orcs began to wield warlock magics, the gentle fields and streams of Draenor began to blacken and fade.[33] From every account, the demonic energies, used so freely and with no heed given as to their cost, leeched all that was wholesome and life-giving from the world of Draenor.[34]


All satyrs have been transformed into their current shapes by inheriting the demonic curse that originated with Xavius.[35]


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

Blood elves are high elves who had temporarily turned to absorbing demonic magic after the loss of the Sunwell, and had subsequently become addicted to the fel energies.[36] From the most pious of priests or most outdoorsy of Farstriders, chances are any high elf in Quel'Thalas or Outland following the Third War was around fel energies, which made their eyes turn green.[37]


Composed of arcane magic and of the primordial matter from which the universe was born, the titans are godlike cosmic beings, but they are susceptible to fel magic. Though the titans of the Pantheon wielded powers incomprehensible to mortal minds, they could not overcome Sargeras's fel-fueled might. The fallen titan decimated the Pantheon members by summoning a massive fel storm that would consume their bodies and souls alike,[38] though Norgannon managed to save their souls and made them flee towards Azeroth, where they would vanish.

Void revenants

Void revenants are a race of parasitic void-beings that tear holes through the planes of reality, consuming and absorbing the energies and beings within. Xhul'orac was twisted and fed overwhelming fel energy by alternate Gul'dan and wanted to use his powers to tear open the portals through which he planned to rally the forces of the Burning Legion.[39]

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.[40] Demon hunters mark their bodies with arcane runes to keep their fel forces in check.[41]


Some druids have manipulated fel energy to enhance their attunement with the wild.[42]


"It is days like this I miss using fel magic. Sure, it was evil, but it got the job done."
Sunreaver Magus

Some mages gave up the arcane to begin a personal quest to understand demons and their fel energies, like Daio the Decrepit, effectively becoming warlocks. Some warlocks are also named fel magus such as Fel Magus Verondis and Fel Magus Kel'rothek.

Dalaran attempts to stifle the studies of fel magics and necromancy. Despite the superior power of fel magic which threatened to overshadow established practices, students were taught about practicality over what is achievable. Fel's efficiency is commonly balked for being unstable and "evil".[19] The official teachings of the Kirin Tor are that demonology is to be eschewed, avoided, and abjured. Any attempt to summon demons are to be found out and stopped at once, and those involved are to be expelled, or worse.[43]


A warlock sacrificing living beings
"The warlock's way was quicker, more effective, or so it seemed. But there comes a time when a price must be paid, and sometimes, it is dear indeed."
Grommash Hellscream

Warlocks are magical practitioners that seek to understand darker, fel-based magic, and its destructive spells. While many warlocks willingly follow the Burning Legion, there are those who work against it, using their magic to fight against evil. Warlocks have proven themselves to be powerful allies-as well as powerful foes.[44] Warlocks convert life into fel, draining the victim as a source of power.


Any creature can be corrupted with fel magic, this includes dragons, harpies, tauren, murlocs, arakkoa, animals such as boars, and so on.

In the RPG

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. Fel 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.[45] 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.[46] 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.[47] 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.[45]

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.[45]

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.[citation needed]

Entropic fire

Entropic fire is fel energy given substance: it is entropic fire that burns on infernals, and it is entropic fire that ran down the body of the pit lord Mannoroth the Destructor. Entropic fire burns, as does normal fire, but it is more sinister still: it feeds on life, including the life of its wielder.[48]

Fel stone

A gray ore known as fel stone litters the physical spaces of the Nether. It functions as a conduit for the Nether's entropic energies.[49]



  1. ^ TCG Heroes of Azeroth/17
  2. ^ Dave Kosak on Twitter (2015-11-10)
  3. ^ Dave Kosak on Twitter (2015-12-03)
  4. ^ Ultimate Visual Guide, pg. 21
  5. ^ Quest:Seeking the Soulstones: Blade's Edge Memory
  6. ^ a b World of Warcraft: Chronicle Volume 1
  7. ^ 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."
  8. ^ Soul engine
  9. ^ A [94] Soul Shards of Summoning
  10. ^ N [102] Opposites Repel
  11. ^ Ask CDev Answers: Round 3
  12. ^ Dave Kosak on Twitter
  13. ^ Fel Flame (elemental)
  14. ^ Mount Journal entry for  [Felfire Hawk]
  15. ^ B [70G] Hotter than Hell
  16. ^ The Tomb of Sargeras
  17. ^ N [110] Fire!
  18. ^ Animated Fel
  19. ^ a b c Journal of Archmage Antonidas
  20. ^ a b The Tomb of Sargeras
  21. ^ File:Meryl using fel energy for scrying.jpg
  22. ^ Legion ship
  23. ^ Alex Afrasiabi on Twitter (2016-12-12).
  24. ^ Mannoroth (tactics)#Adventure Guide
  25. ^ Jeremy Feasel on Twitter (2015-06-18). "Well, yes, Mannoroth is an undead demon. Demons know how to raise undead, and he was a demon previously."
  26. ^ N [48] Collecting Corruption
  27. ^ Paragons pg. 894
  28. ^ The Maker
  29. ^ The Warcraft Encyclopedia/Demons
  30. ^ World of Warcraft: Chronicle Volume 1 pg. ??
  31. ^ World of Warcraft: Chronicle Volume 1 pg. 102-103 on e-book
  32. ^ The Burning Crusade Townhall/Draenei
  33. ^ Kil'jaeden and the Shadow Pact
  34. ^ Rise of the Horde, pg. 498
  35. ^ The Warcraft Encyclopedia/Satyrs
  36. ^ Stormrage, pg.292
  37. ^ Ask CDev Answers: Round 3
  38. ^ World of Warcraft: Chronicle Volume 1 pg. 97-99 on e-book
  39. ^ Xhul'horac#Adventure Guide
  40. ^ "Official Demon Hunter"
  41. ^ N [102] Opposites Repel
  42. ^  [Impeccable Fel Essence]
  43. ^ The Last Guardian, pg. 230
  44. ^ Ultimate Visual Guide pg. 21
  45. ^ a b c Johnstone, Mike. Magic & Mayhem, 24. ISBN 9781588469540. 
  46. ^ Johnson, Luke. Dark Factions, 37. ISBN 9781588464460. 
  47. ^ Arthaus. World of Warcraft: The Roleplaying Game, 252. ISBN 9781588467812. 
  48. ^ Dark Factions, 37
  49. ^ Shadows & Light, pg. ??
  50. ^ Matt Burns on Twitter. Twitter (2015-10-26). Archived from the original on 2017-01-06. Retrieved on 2017-01-06.