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Effects:+100 Armor
Passive:UNIQUE: Upon being hit by a basic attack, reflects magic damage back to the attacker equal to (25% of bonus Armor) plus 15% of the incoming damage.
Cost:2,350g (1,08250g)
Sell Value:1,540g

Cloth Armor.png
Chain Vest.png
Thornmail is an advanced item available in Classic and Dominion mode


  • Mostly utilized on tanks when the enemy team has a high physical damage output.


  1. Defense > Armor

Similar Items


  • The damage reflection only works with auto attacks and skills which apply on-hit effect, but not with any damage resulting from on-hit effects. (e.g. damage from Madred's Bloodrazor or Wit's End
  • Damage received from Thornmail will break passives such as  Miss Fortune's Strut and Boots of Mobility. It will also trigger tower aggro.

Patch History


TOTAL cost : 2300 gold 2350 gold
BUILD path : Cloth Armor + Chain Vest + 1250 gold

Costs more. Reflects less damage back to attackers, but scales with armor.

Another major outlier in terms of effectiveness, Thornmail is at its strongest when you can comfortably stack health. While we aren’t rocking that particular boat today (armor + health is kind of always good), we’re tossing in a hook to make the item also scale with armor-stacking, but in a different way. This also creates neat synergies for champions with on-demand armor buffs (like Leona or Rammus) which is pretty OK by us.

Important to note - if for any reason you experience a decrease in armor % (say, a stray black cleaver to the face), Thornmail will ignore that when calculating its damage. Way to be, Thornmail.

TOTAL COST : 2100 gold 2300 gold
REFLECT DAMAGE : 30% of the attack 15% of the attack
NEW REFLECT RATIO : Now scales with 0.25 bonus armor


  • TOTAL COST : 2200 gold 2100 gold (combine cost decreased by 130 gold, inherits Chain Vest's 30 gold cost increase)


  • Cost changed from 2,000 (1,000) to 2,200 (1,180)


  • Damage return increased to 30% from 25%


  • Combine cost increased to 1,000 from 600
  • 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

  • Temporarily removed from the game

May 9, 2009 Patch REMAKE

  • On being hit, returns 20% of damage taken (20 minimum)
  • Added a new component, Cloth Armor, which increases armor from 50 to 70
  • Increased recipe cost from 320 to 500
  • Made this item unique

Alpha Week 6

  • Now returns 20 damage, increased from 18

Alpha Week 2

  • Increased return damage

External Links