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Iron (Feruchemy).svg
Power Pull metals
Type External, Pulling, Physical
Misting Lurcher
Power Store weight/mass
Type Physical
Ferring Skimmer
Power Steal strength
Type Physical
World Scadrial, Roshar
Universe Cosmere
Featured in Mistborn, The Stormlight Archive

Iron is the External Physical Pulling Metal. An Allomancer burning iron can Pull bits of metal toward their "center of self,"[1] and can also use iron to sense the presence of metal nearby. Ironpulling is not dependent on magnetic forces or Allomantic power--most metals (with the exception of aluminum and some of its alloys) can be Pulled. Feruchemists can use iron to store physical weight, and when used as a Hemalurgic spike, iron steals physical strength.

Allomantic Use[edit]

An iron Misting is known as a Lurcher. Ironpulling is the art of burning iron to pull metals toward (in a straight line) the user's "center of self,"[1][2] which is likely tied to the Allomancer's Cognitive and Spiritual aspects. There are two general rules for ironpulling, which also apply to steelpushing, its paired opposite. The first rule is that the strength of your pull is roughly proportional to your physical mass. This means that larger Allomancers can generally ironpull and steelpush more powerfully than a smaller counterpart. While proportional, the force exerted by an ironpull is much greater than the Lurcher's weight, allowing them to pull themselves through the air by pulling on a piece of metal that weighs more than they do (or is anchored to something that does).[3] The second rule is that metal that is at least partially inside a person's body cannot be affected by iron. Both of these rules can be overcome by a sufficiently strong Lurcher, however.

When burning iron, blue lines emerge from the Lurcher and connect themselves to pieces of nearby metals, with the size of the iron line indicating how big the metal is. The iron lines can typically only be seen by the Lurcher.[3] The iron lines manifest themselves on the Spiritual Realm and can be cut or interfered with.[4] It is also possible to use the iron lines to see via the trace metals in everyone's bodies and in the objects around them.[5] A Lurcher could identify specific metals with the iron lines.[6]

Of the two external physical metals, iron is by far the less flashy. Utilized by a Misting, iron is generally used as a purely defensive mechanism, cancelling out the efforts of enemy Coinshots by ironpulling enemy projectiles into a wooden shield. Iron is also less useful by itself in jumping, since using iron requires a large, well anchored piece of metal at your destination. Both metals' performance are greatly enhanced when used in tandem, allowing feats like those performed by Kelsier in his battle with the Inquisitor Bendal.

An especially skilled Allomancer can Pull on individual parts of a metal object.[7] Through unknown means, a Lurcher could pull on non-metal objects.[8] Ironpulling liquid metals works similarly to a ferrofluid.[9]

Feruchemical Use[edit]

An iron Ferring is known as a Skimmer. Iron is used to store physical mass.[2] This is accomplished by changing the Skimmer's mass, not by changing the effect of gravity on the Skimmer. This change does not affect things that the Skimmer wears, but is great enough that a Skimmer storing weight can safely fall any distance, as the Skimmer's surface area is sufficient to slow the fall to safe speeds.[10]

A Skimmer tapping iron can grow proportionally heavier than normal, and although this is not as useful as storing mass in many cases, it has significant martial applications. Specifically, by tapping iron during key moments, Skimmers can add force to their blows, and can use added weight to withstand attacks. It can be used to counter Coinshots or Lurchers, for example, by increasing weight when pushed, one can instead push the Coinshot back. Furthermore, the added mass from tapping an ironmind can wreak havoc with steelpushes/ironpulls if the Skimmer is being used as the anchor.[11]

Tapping iron grants the Skimmer the strength requisite to remain standing,[12] including a partial increase in the density of their body,[13] but this increase in density is limited and does not, for example, affect the Skimmer's vulnerability to penetration.[12]

The law of conservation of momentum still exists when using iron Feruchemy, so while tapping weight doesn't significantly increase the speed of falling (not considering air resistance), decreasing one's weight to half will double one's speed.[14][15]

Feruchemical iron interferes with an individual's interaction with the Higgs field.[16]

Hemalurgic Use[edit]

When used as a Hemalurgic spike, iron steals physical strength.[17] Increasing the number of spikes increases the strength of the recipient, but at the cost of twisting the body and mind of the person who receives the spikes.

Hemalurgic Constructs[edit]

Koloss are created when a living human is implanted with four iron spikes.[18] This gives the koloss incredible strength, but the process effectively destroys their minds, leaving them incapable of complex logic and extremely vulnerable to Ruin's control.

Kandra Blessing[edit]

The kandra can use a pair of these spikes as a Blessing and call them the Blessing of Potency.[19] Like all kandra Blessings, the Blessing gives the mistwraiths sentience, with the added benefit of physical strength and endurance.

Fabrial Use[edit]

A fabrial with an iron cage will physically attract the element corresponding with the trapped spren, creating an attractor fabrial. For example, a fabrial that draws nearby smoke and causes it to accumulate near the device.[20]


  1. a b Starsight Release Party
    Arcanum - 2019-11-26#
  2. a b The Alloy of Law Ars Arcanum#
  3. a b The Final Empire chapter 7#
  4. Shadows of Self Denver signing
    Arcanum - 2015-10-06#
  5. The Well of Ascension Annotations
    Arcanum - 2007-11-11#
  6. General Signed Books 2016
    Arcanum - 2016-12-23#
  7. Legion Release Party
    Arcanum - 2018-09-19#
  8. Mini-Con 2021
    Arcanum - 2021-11-22#
  9. Orem Signing
    Arcanum - 2019-03-16#
  10. The Well of Ascension chapter 12#
  11. The Well of Ascension chapter 58#
  12. a b The Alloy of Law Annotations
    Arcanum - 2014-03-14#
  13. The Hero of Ages chapter 78#
  14. The Bands of Mourning chapter 12#
  15. Shadows of Self Lansing signing
    Arcanum - 2015-10-13#
  16. Bands of Mourning release party
    Arcanum - 2016-01-25#
  17. The Hero of Ages Ars Arcanum#
  18. The Hero of Ages chapter 40 epigraph#
  19. The Hero of Ages chapter 39#
  20. Rhythm of War chapter 11 epigraph#
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