Attributes are the main statistics of all heroes that independently determine most scaling statistics. These attributes are strength, agility, and intelligence. Attributes are gained when a hero levels up, obtains a talent, buys certain items, or uses certain abilities. Illusions benefit from attributes.
Contents
Primary Attribute[]
Every hero has a primary attribute, which controls their attack damage. Every point in their primary attribute adds 1 point of damage to their attacks. A hero's primary attribute heavily impacts and commonly even defines the hero's role and how they are played. For example, 
intelligence heroes are typically more dependent on abilities. A hero's primary attribute typically grows faster than the other two attributes.
The following abilities can change a hero's primary attribute
Strength[]
Strength is a measure of a hero's toughness and endurance. Strength determines a hero's maximum health and health regeneration. Heroes with strength as their primary attribute can be hard to kill, so they often take initiator and tank roles, initiating fights and taking most of the damage from enemy attacks.
Every point in strength increases:
- Maximum health by 20.
- Health regeneration by 0.1.
For strength heroes, every point in strength also increases attack damage by 1.
Agility[]
Agility is a measure of a hero's swiftness and dexterity. Agility determines a hero's armor and attack speed. Heroes with agility as their primary attribute tend to be more dependent on their physical attacks and items, and are usually capable of falling back on their abilities in a pinch. Agility heroes often take carry and gank roles.
Every point in agility increases:
- Armor by 0.167 (1/6).
- Attack speed by 1.
For agility heroes, every point in agility also increases attack damage by 1.
Intelligence[]
Intelligence is a measure of a hero's wit and wisdom. Intelligence determines a hero's maximum mana and mana regeneration. Heroes with intelligence as their primary attribute tend to rely on their abilities to deal damage or help others. Intelligence heroes often take support, gank, and pusher roles.
Every point in intelligence increases:
- Maximum mana by 12.
- Mana regeneration by 0.05.
For intelligence heroes, every point in intelligence also increases attack damage by 1.
Attribute Bonus[]
The Attribute Bonus UI within Talent leveling menu.
Attribute Bonus is a passive ability available to every hero, except for Invoker, located within the Talent leveling menu, below the talent tree. It has no level requirement and can be leveled up at any hero level. It automatically levels up if nothing else can be leveled up at that level.
Passive
Self
Strength Bonus: 2/4/6/8/10/12/14 Agility Bonus: 2/4/6/8/10/12/14 Intelligence Bonus: 2/4/6/8/10/12/14
Notes:
- The attributes effectively grant the following stats on each level
- 2/4/6/8/10/12/14 attack damage.
40/80/120/160/200/240/280 health.- 0.2/0.4/0.6/0.8/1/1.2/1.4 health regeneration.
- 2/4/6/8/10/12/14 attack speed.
- 0.33/0.67/1/1.33/1.67/2/2.33 armor.
- 24/48/72/96/120/144/168 mana.
- 0.1/0.2/0.3/0.4/0.5/0.6/0.7 mana regeneration.
- If all ability points are spend on their respective levels, Attribute Bonus levels up automatically on the levels 17/19/21/22/23/24/26.
Items Granting Attributes[]
Each attribute has its own set of items that focus on boosting it. These items are different for each attribute. In order to categorize them, they're split into 5 different sections:
- Small Items boost their associated attribute by 3, or all attributes by 1. These items are usually taken as starting items to make up for gaps in a hero's statistics.
- Medium Items boost their associated attribute by 6, or all attributes by 2. Though generally not taken to increase attributes, these items are usually components of many midrange items.
- Large Items boost their associated attribute by 10, or all attributes by 4. These items are usually components in more powerful items, and almost never bought just for the stats.
- Ultimate Items boost their associated attribute by 25, or all attributes by 10. These are mostly used to make late game items because of how expensive they are and how cost-ineffective they are per point of stats.
- Besides the items in the table, Ghost Scepter is another basic item that boosts all attributes by 5. All other items that grant attributes are upgrades, and are all derived from one or multiple of the 16 items listed below.
| Small | Medium | Large | Ultimate | |
|---|---|---|---|---|
| All Attributes |  +1 All Attributes |
 +2 All Attributes |
 +4 All Attributes |
 +10 All Attributes |
| Strength |  +3 Strength |
 +6 Strength |
 +10 Strength |
 +25 Strength |
| Agility |  +3 Agility |
 +6 Agility |
 +10 Agility |
 +25 Agility |
| Intelligence |  +3 Intelligence |
 +6 Intelligence |
 +10 Intelligence |
 +25 Intelligence |
Talents Granting Attributes[]
Several heroes have talents which directly grant them a boost on one or more attributes. There are talents for each of the 3 attributes, and talents for / / all attributes together. There are no talents for 2 out of 3 attributes, but a hero may have two separate talents for different attributes, which are usually provided as a choice on the same level, so the player may decide between one of them.
The following heroes have a 
talent that grants them / / all attributes.
| Bonus | Level 10 | Level 15 | Level 20 | Level 25 | ||||
|---|---|---|---|---|---|---|---|---|
| Left | Right | Left | Right | Left | Right | Left | Right | |
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Abilities and Items Modifying Attributes[]
- Primary Attribute Bonus: 70
Passively increases the wielder's primary attribute. - Strength Bonus: 25
While toggled on, grants strength to the owning hero. The strength is granted gradually over a short duration upon toggling on, and is instantly removed upon toggling off. - Agility as Ranged Agility Bonus: 25%/35%/45%
The agility bonus is entirely based on the agility of the hero with this ability. - Strength Bonus: 8/18/28/38
Duration: 10
Temporarily grants the target strength while active. - Agility Bonus: 10/20/30/40
Agility Duration: 2
Temporarily grants the triggering unit agility upon successfully attacking the rush target. - Intelligence Bonus: 16%
Passively increases the wielder's intelligence by a percentage. - Primary Attribute Bonus: 7
Passively increases the wielder's primary attribute. - Selected Attribute Bonus: 10
Passively grants the owner of the item a bonus to the current selected attribute. Can be cast to switch the bonus from Strength ➜ Intelligence, Intelligence ➜ Agility and Agility ➜ Strength. - Strength Bonus per Death: 1.5/2/2.5/3 ( 3/3.5/4/4.5)
Permanently grants strength whenever an enemy hero dies close to the hero with this ability, or when the hero with this ability makes a kill. - Secondary Attributes Bonus: 14
Passively increases the wielder's secondary attributes. - Temporary Intelligence Steal: 1/1/2/3
Temporary Intelligence Steal Duration: 15/20/25/30
Permanent Intelligence Steal Radius: 925
Permanent Intelligence Steal: 2 ( )
Temporarily steals intelligence, removing it from the attacked enemy hero and granting it to the caster. The debuff of multiple casts stacks.
Permanently steals intelligence from enemy heroes whenever they die close to the hero with this ability, or when the hero with this ability kills them. - All Attributes Loss per Attack: 1
Agility Gain per Attack: 1
Duration: 3 ( 4)
Permanent Agility Steal Radius: 300
Permanent Agility Steal: 1
Temporarily steals strength, agility, and intelligence, removing them from the attacked enemy hero, converting them into agility and granting them to the attacking hero with this ability. The debuff of multiple attacks stacks. When a debuffed enemy hero dies within 300 range, or is killed by the hero with this ability, they permanently steal 1 agility from the enemy hero. - Bonus Intelligence: 5
Duration: 35
Requires Aghanim's Shard, grants Skywrath Mage 5 intelligence every time he casts an ability. Stacks independently. - Primary Attribute Reduction: 13%/14%/15%/16% ( 23%/24%/25%/26%)
Attribute Reduction Duration: 13/14/15/16
Temporarily reduces the primary attribute of all hit enemy heroes by a percentage. The debuff of multiple casts stacks. - Strength Steal: 4 ( 10)
Duration: 45
Temporarily steals strength, removing it from hit enemy heroes and granting it to the caster. The debuff of multiple casts stacks. - Strength Bonus: 40%/50%/60%
Duration: 40
Temporarily grants the caster strength while active.
Abilities Modified by Attributes[]
- Strength as Damage: 60%/80%/100%/120% ( 100%/120%/140%/160%)
Max Stacks: 5
Strength Bonus per Stack: 15%
Buff Duration: 15
Double Edge's damage consists of a flat amount, plus a percentage of the caster's strength. - Strength as Damage: 175%/250%/325%
The damage of Stampede is entirely based on the caster's strength. - Agility as Ranged Agility Bonus: 25%/35%/45%
The agility bonus is entirely based on the agility of the hero with this ability. - Primary Attribute as Damage: 150%
Ether Blast's damage consists of a flat amount, plus a percentage of the caster's primary attribute. - Strength as Damage per Second: 100%
Deals 100% of item bearer's strength per second to units they are standing on top of. - Strength as Max Health Regen Bonus: 20%/40%/60%/80%
The health regeneration is based on the strength of the hero with this ability. - Min Bonus Damage Agility Multiplier: 1/1.5/2/2.5
Max Bonus Damage Agility Multiplier: 3
The damage is based on the caster's agility to strength ratio, plus a fixed amount. The minimum multiplier is used when the caster's strength is 50% higher than their agility, and the maximum when agility is 50% higher than strength. - Min Knockback Distance: 500
Max Knockback Distance: 0.5
Min Stun Duration: 1.5/2/2.5/3
Max Stun Duration: 3
The stun duration and knockback distance are based on the caster's strength to agility ratio. The minimum duration and distance are used when the caster's agility is 50% higher than their strength, and the maximum when strength is 50% higher than agility. - Mana Burned per Intelligence: 350%/400%/450%/500%
The amount of burned mana is entirely based on the target's intelligence. - Strength as Damage/Heal per Second: 9 ( 11)
Dismember's damage and self-heal consist of a flat amount, plus a percentage of the caster's strength. - Backstab Damage per Agility: 1.4/1.8/2.2 ( 1.9/2.3/2.7)
The bonus damage of Cloak and Dagger is entirely based on the agility of the hero with this ability. - Intelligence as Damage: 15%/35%/55%/75% ( 30%/50%/70%/90%)
The damage of Glaives of Wisdom is entirely based on the caster's intelligence. - Intelligence Difference Damage Multiplier: 1.5/2/2.5/3
Last Word's damage consists of a flat part, plus a based on the difference between the intelligence of the caster and the target. - Intelligence as Bonus Damage: 1.4
Arcane Bolt's damage consists of a flat amount, plus a percentage of the caster's intelligence.
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