Thornmail

11.1

• Grievous Wounds duration increased to 3 seconds from 2.

10.23

• Bug Fix: No longer loses the ability to apply Grievous Wounds if its owner dies.
• Updated icon.
• New:
• Recipe: Bramble Vest + Giant's Belt + 1000 g = 2700 g.
• Stats: 60 armor, 350 health.
• Unique Passive - Thorns: When struck by an attack, deal 10 (+ 10% bonus armor) magic damage to the attacker and inflict them with 40% Grievous Wounds for 2 seconds if they are a champion. Immobilizing enemy champions also applies 60% Grievous Wounds for 2 seconds.
• Limited to 1 Thornmail.
• Old:
• Recipe: Bramble Vest + Ruby Crystal + Warden's Mail + 500 g = 2900 g.
• Stats: 80 armor, 250 health.
• Unique Passive - Thorns: Upon being hit by a basic attack on-hit, reflects 25 (+ 10% bonus armor) magic damage, while also inflicting Grievous Wounds on the attacker for 3 seconds.
• Unique Passive - Cold Steel: When hit by basic attacks, cripples source's attack speed by 15% for 1 second.

9.8

• Grievous Wounds duration increased to 3 seconds from 1.

8.4

• Bug Fix: Now correctly applies the cripple debuff to minions and monsters attacking its owner.

7.19

• Combine cost reduced to 500 g from 600 g.
• Total cost unchanged.
• Armor increased to 80 from 75.

7.14

• New Recipe: Bramble Vest + Ruby Crystal + Warden's Mail + 400 g = 2900 g
• Old Recipe: Cloth Armor + Chain Vest + 1250 g = 2350 g
• Armor reduced to 75 from 100.
• New Effect: Grants 250 health.
• Removed Passive: Reflects 15% of the physical damage taken (+ 25% bonus armor) from basic attacks and on-hit effects back to its source as magic damage.
• New Passive – Thorns: Upon being hit by a basic attack, reflects magic damage equal to 25 (+ 10% bonus armor), inflicting Grievous Wounds on the attacker for 1 second.
• New Passive – Cold Steel: When hit by basic attacks, reduced source's attack speed by 15% for 1 second.

6.14

• Added to the Twisted Treeline.

5.16

• Total cost increased to 2350 g from 2100 g.
• 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 will not reduce the reflected damage by reducing your bonus armor but a level 5 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.

4.20

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

3.10

• New icon.

V13.1b

• Undocumented: Armor increased to 70 from 60.
• Thorns armor ratio increased to 25% bonus armor from 20%.
• Grievous Wounds strength increased to 40% from 25%.
• Removed: Immobilizing effects on enemy champions no longer inflict them with Grievous Wounds for 3 seconds.

V1.0.0.82

• Damage return increased to 30% from 25%.

V1.0.0.63

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

V1.0.0.152

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

V1.0.0.151

• Removed from the purchasable item list on Twisted Treeline.

V0.9.25.24

• Now reflects damage calculated before armor.

May 9, 2009 Patch

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

May 15, 2009 Patch

• Removed from the game temporarily.

June 26, 2009 Patch

• Added back into the game.

Alpha Week 6

• Increased damage returned to 20 damage from 18.

Alpha Week 2

• Increased return damage.