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Thornmail is a legendary item in League of Legends.[1] 


Thornmail item
2300 Gold (1250 Gold)
Chain Vest item
750 Gold (450 Gold)

Cost Analysis*

Gold Value
  • 100 armor = 2000 Gold
    • Total Gold Value = 2000 Gold

Gold Efficiency*

  • Thornmail item.png Thornmail is 86.96% gold efficient.
  • For the item to be gold efficient, its passive must have a value of at least 300 Gold.


  • On being hit, Thornmail will reflect 15% of the physical damage dealt by the attacker, including most on-hit effects.
  • Damage is reflected when hit by an attack, regardless of whether the attack deals damage. If the attacker is blinded, or the wearer is protected by a shield or invulnerability, damage will still be reflected.
    • Abilities that apply on-hit effects will trigger Thormail.


  • Thornmail is a particularly effective defensive option when facing down opponents whose damage is dealt primarily through autoattacks, or against opponents that utilize on-hit healing to survive fights (such as life steal).
  • Unlike Molten Shield.png Molten Shield and Defensive Ball Curl.png Defensive Ball Curl, Thornmail's magic damage does not trigger spell effects.


  • It is the only purchasable item in the tutorial.
  • Currently, this item offers the largest amount of armor.

Patch History

  • Total cost increased to 2300 Gold from 2100 Gold.
  • Reflected damage reduced to 15% from 30%.
  • New Effect: Reflected damage now deals (+25% bonus armor) bonus damage.
    • The armor ratio will be affected by flat armor reductions down to 0 armor - while percent armor reductions will be ignored for the purpose of calculating bonus damage.i.e. The Black Cleaver item.png The Black Cleaver will not reduce the reflected damage by reducing your bonus armor but a level 5 Puncturing Taunt.png Puncturing Taunt will reduce the reflected damage by 6.25(25% of 25).Negative armor values will be treated as 0. Armor penetration will not affect the ratio.


  • Item cost decreased to 2100 Gold from 2200 Gold.
  • Combine cost decreased to 1050 Gold from 1180 Gold.


  • New icon.


  • Item cost increased to 2200 Gold from 2000 Gold.
  • Combine cost increased to 1180 Gold from 1000 Gold.


  • Removed from the purchasable item list on Twisted Treeline.


  • Damage return increased to 30% from 25%.


  • Recipe cost increased to 1000 Gold from 600 Gold.
  • Armor increased to 100 from 70.
  • Damage return increased to 25% from 20%.


  • Now reflects damage calculated before armor.

June 26, 2009 Patch:

  • Added back into the game.

May 15, 2009 Patch:

  • Removed from the game temporarily.

May 9, 2009 Patch: Reworked

  • Recipe changed: Now requires Cloth Armor item.png Cloth Armor.
  • Armor increased armor to 70 from 50.
  • Combine cost increased to 500 Gold from 320 Gold.
  • Unique ability: On being hit, returns 20% of damage taken (20 damage minimum).

Alpha Week 6:

  • Increased damage returned to 20 damage from 18.

Alpha Week 2:

  • Increased return damage.


  1. Itemlist on leagueoflegends.com

List of Items

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