Every Hero in Warcraft III has three attributes that usually define his or her role in the game. These are Intelligence (INT), Agility (AGI) and Strength(STR)

Every Hero has a "main" attribute on which their damage is based. Each point in their main attribute adds 1 point of damage. Typically, when a Hero levels up, their main attribute receives the largest increase.

Each point in Intelligence will:

• Increase the hero's max Mana by 13
• Increase the hero's Mana regeneration by 0.04 points per second

Each point in Agility will:

• Increase the hero's armor by 0.14 points.
• Increase the hero's attack speed by 1 point

Each point in Strength will:

• Increase the Max HP of the hero by 19 points
• Increase the HP regeneration of the hero by 0.03 HP per second

How to Increase Attributes?

Every time you level up, your hero earns a certain amount of attribute points (you can check the exact amount while hovering your mouse over a hero you are about to pick).

Some Items (Gauntlets of Ogre Strength, Blade of Alacrity, etc.) increase attributes directly.

Some skills increase attributes as well:

• Morph (2/4/6/8 AGI and STR)
• Flesh Heap (0.9/1.2/1.5/1.8) for any nearby (400 AOE) dying enemy hero or hero killed by Pudge outside the AoE STR
• Decay (Temporarily saps 4 STR from Target)
• Great Fortitude (12/24/36 STR)
• Marksmanship (15/30/45 AGI)
• Last Word (Steals 1 INT from a dying enemy hero)
• Astral Imprisonment (2/4/6/8 INT stolen temporarily)
• Every hero except Invoker has a fifth skill (Attribute Bonus) that increases all attributes by 2 points.