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Berserker’s Blood is a passive ability on Huskar in Dota 2. The more health Huskar loses, the stronger he gets: his attack speed, magic resistance, and health regeneration all rise as his missing health grows. The title doesn’t name a game, so this article assumes you mean Dota 2. If you were thinking of a different game, the effect described here may not apply.
What the ability does
Berserker’s Blood is not a consumable or an item. It is one of Huskar’s innate abilities, and it scales in reverse with his health: the lower his health, the bigger its bonuses. Valve’s official Huskar hero page describes it this way: “The more injured Huskar is, the stronger he becomes, increasing his attack speed, magic resistance, and health regeneration based on his missing health. Health regeneration is a percentage of your Strength.”
That description names three effects, and each one is worth understanding on its own.
Attack speed
Attack speed increases as Huskar’s missing health grows. This is the bonus most players notice in fights, because it makes Huskar’s basic attacks come faster at the moment he is most fragile. The exact maximum depends on the current game data, so check the ability tooltip in your client for the numbers that apply to your level of the ability.
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Magic resistance
Magic resistance also rises with missing health. Higher magic resistance reduces the magic damage Huskar takes, which helps him survive spell damage during the same stretch of the fight where his attack speed is climbing. Like attack speed, the bonus is tied to how much health he has lost, not to a fixed value.
Health regeneration
Health regeneration is the component that makes the ability self-sustaining. It rises with missing health, and the official description specifies that it is a percentage of Huskar’s Strength. That means the regeneration you get from Berserker’s Blood improves when you build Strength, and it does not depend on a flat number that stays the same across games. Because the value is a percentage, the absolute amount will vary with the Strength you have at the time.
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How the numbers have changed
Valve’s official Huskar page gives the scaling in words, not as a full level-by-level table, so for exact figures the in-game tooltip is the reliable source. Older balance numbers do exist, and they are useful only as history.
In Valve’s Mistwoods update (2020), the maximum attack speed from Berserker’s Blood was changed as shown below. The patch note lists the values as four figures in sequence, and the table keeps that order.
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| Version | Value 1 | Value 2 | Value 3 | Value 4 |
|---|---|---|---|---|
| Before the Mistwoods update | 130 | 190 | 250 | 310 |
| After the Mistwoods update | 160 | 210 | 260 | 310 |
These are the maximum attack speed values from a 2020 patch note. They are not the current bonus. If a guide or forum post quotes these numbers as today’s values, it is probably out of date.
The Aghanim’s Shard interaction
Liquipedia’s Huskar page, a community-maintained wiki, describes an Aghanim’s Shard interaction involving a dispel and delayed healing tied to Berserker’s Blood. This is secondary information rather than an official Valve statement, and the details of upgrades can change with patches. Before relying on it for a build, check the Aghanim’s Shard description in your own client and the current Huskar page on Valve’s site.
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Why the numbers you find online may not match
- Old patch figures. The 2020 Mistwoods values are historical. Any guide that quotes them without a date is likely to be out of date.
- Wiki pages that lag behind patches. Community wikis are useful for context, but the in-game tooltip reflects the version you are actually playing.
- Percentage-based regeneration. Because health regeneration is a percentage of Strength, two Huskars with the same missing health can heal at different rates if their Strength differs.
In short, Berserker’s Blood rewards Huskar for taking damage: as he loses health, he gains attack speed, magic resistance, and regeneration, with the regeneration scaling with Strength. For the exact numbers in your version of the game, the tooltip is the reference.
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