Dota 2 Wiki

Orb of Corrosion is an item purchasable at the Base Shop, under Accessories.

Components required from the Base Shop
Orb of Corrosion
Orb of Corrosion icon
Seepage from the wounds of a warrior deity, sealed in an arcanist's orb following a campaign of vicious slaughter.
Cost 875 Gold
Sell Value Full price refunded within 10s. 437.5 Gold
Passive ? Corrosion
Bonus ? +3 Armor
+25 Attack Speed
Shareable No
Disassemble No
Usage Alert ? No
Orb of Corrosion (875)
Orb of Venom (250)
Ring of Protection (175)
Gloves of Haste (450)


Cannot be used by illusions. Pierces debuff immunity.
Dealing 5 damage per second, and slowing movement by 13% if the equipped hero is melee, or by 4% if they are ranged and reduces heals, health regeneration, lifesteal and spell lifesteal by 20% . Affects Buildings. Lasts for 3 seconds.
Health Restoration Reduction: 20%
Move Speed Slow (Melee): 13%
Move Speed Slow (Ranged): 4%
Damage per Second: 5
Duration: 3
Modifiers [?]

  • The attacks first apply the debuff, then their own attack damage.
  • If both Melee melee and Ranged ranged hero with Orb of Corrosion attack the same target, the values of the first applied debuff are used and refreshed.
  • Deals damage in 1-second intervals, starting 1 second after the debuff is applied, resulting in 3 instances.
  • Works against buildings and allied units. Does not work against wards.
  • Corrosion does not stack with the slow and damage over time of Orb of Venom icon Poison Attack.
    • If both debuffs are present, Orb of Venom's debuff does not slow or deal damage.

Recommended Heroes[]

Melee Melee heroes that naturally buy Orb of Venom icon Orb of Venom and rely on physical damage:

[[No results|110px|link=Bounty HunterUnknown Hero icon]]
Bounty Hunter
Lifestealer icon
[[No results|110px|link=Lone DruidUnknown Hero icon]]
Lone Druid
Marci icon
Monkey King icon
Monkey King
[[No results|110px|link=Night StalkerUnknown Hero icon]]
Night Stalker
Pangolier icon
Slardar icon
Slark icon
[[No results|110px|link=TuskUnknown Hero icon]]



  • Orb of Corrosion icon Corrosion's debuff does not have its own particle system and uses the particle effects of Thunder Clap icon Thunder Clap's slow debuff instead.

Recent Changes[]

  • Reduced Orb of Venom icon Orb of Venom cost from 275 Gold to 250 Gold (total cost decreases from 900 Gold to 875 Gold).
  • Reworked
    recipe and stats.
Orb of Corrosion icon Orb of Corrosion
Recipe: Orb of Venom icon Orb of Venom (275 Gold), Blight Stone icon Blight Stone (300 Gold), Fluffy Hat icon Fluffy Hat (250 Gold), Default recipe icon Recipe (100 Gold)
Total cost: 925 Gold
Health bonus: 150
Orb of Corrosion icon Orb of Corrosion
Recipe: Orb of Venom icon Orb of Venom (275 Gold), Ring of Protection icon Ring of Protection (175 Gold), Gloves of Haste icon Gloves of Haste (450 Gold)
Total cost: 900 Gold
Armor bonus: 3
Attack speed bonus: 25
  • Orb of Corrosion icon Corrosion
    • No longer reduces armor by 3.
    • Now applies 20% health restoration reduction.
    • Increased damage per second from 3 to 5.
  • Orb of Corrosion icon Orb of Corrosion now requires a Default recipe icon Recipe (+100 Gold) to build (total cost increases from 825 Gold to 925 Gold).