Band of Elvenskin
Orb of Frost
Orb of Blight
Orb of Corrosion in Dota 2: who buys it, when it wins and what it costs
Kevin · Dota2Arena · updated Oct 28, 2026 · numbers live from our scannerOrb of Corrosion costs 1,050 gold and shows up in 5% of ranked matches. Players holding it at the end win 46.6% of their games across 114,578 inventories, most often on Riki and Slark. It wins most in the early game (48.4%) and least in the late game (43.5%).
What Orb of Corrosion does
Passive: Corrosion
Your attacks reduce the target's armor by -2, slows their movement by -16% (-8% against melee targets), and reduces Health Restoration by 18%. Lasts for 3 seconds.
In numbers: +7 agility.
- Armor reduction does not stack with its components, Desolator, or Stygian Desolator.
Who buys Orb of Corrosion
The share says how many games of a hero end with Orb of Corrosion in the inventory, the win rate is that hero's win rate in exactly those games. A high share with an average win rate means the item is standard on the hero; a low share with a high win rate means it is a situational pick that works when it is needed.
| Hero | Share of games | Win rate with it | Games |
|---|---|---|---|
| Riki | 19% | 54.5% | 22,306 |
| Slark | 4% | 45.1% | 11,589 |
| Monkey King | 9% | 42.0% | 8,502 |
| Dazzle | 5% | 50.5% | 5,342 |
| Phantom Assassin | 2% | 33.2% | 4,627 |
| Venomancer | 3% | 43.9% | 3,966 |
| Sniper | 1% | 48.4% | 3,792 |
| Anti-Mage | 1% | 41.8% | 3,685 |
When to buy it
Win rate by match length tells you in which kind of game the item pays off. Items that win short games are usually bought early and snowball; items that win long games are late-game purchases or things you buy when the game is already going well, so read the number as "games with this item at this length" rather than as advice to rush it.
| Phase | Match length | Win rate | Games |
|---|---|---|---|
| Early game | under 25 min | 48.4% | 4,920 |
| Mid game | 25–40 min | 48.3% | 68,386 |
| Late game | over 40 min | 43.5% | 41,347 |
What to combine it with
These items sit in the same final inventory as Orb of Corrosion most often (based on every 4th match). Boots and other staples appear on almost every list; the interesting entries are the ones specific to this item.
| Item | In the same inventory | Cost |
|---|---|---|
 Power Treads | 55% | 1,400 |
 Diffusal Blade | 22% | 2,500 |
 Manta Style | 17% | 4,650 |
 Aghanim's Scepter | 16% | 4,200 |
 Phase Boots | 16% | 1,450 |
 Black King Bar | 15% | 4,050 |
 Wraith Band | 10% | 505 |
 Disperser | 9% | 6,100 |
Frequently asked questions
Is Orb of Corrosion good right now?
In our window Orb of Corrosion ends up in winning inventories 46.6% of the time across 114,578 ranked games, below the 50 % mark. It does best in the early game (48.4%) and worst in the late game (43.5%).
Which heroes buy Orb of Corrosion?
Riki (19% of games), Slark (4% of games), Monkey King (9% of games), Dazzle (5% of games), Phantom Assassin (2% of games). The highest win rate with it belongs to Riki at 54.5%.
How much does Orb of Corrosion cost and what do you need?
Orb of Corrosion costs 1,050 gold in total: Band of Elvenskin (450), Orb of Frost (300), Orb of Blight (300) and a recipe for 0.