Mana

Mana represents the magic power of a hero. It appears in the UI as a blue bar at the bottom of the screen under the Health bar. The left number shows your current mana, while the right number shows your maximum mana. Mana is the resource used to cast spells, if your current mana is lower than the amount needed to use a skill, you won't be able to use it.

A hero's maximum mana is 13 for each point of Intelligence. There are also items that increase total mana directly, such as Point Booster.

Mana Regeneration
Mana Regeneration is a stat that determines the amount of mana a hero regains each second. It is shown as a small number with a + sign at the right side of the mana bar.

Heroes regain mana every second equal to their base mana regen rate (.01 for most heroes), plus .04 for each point of Intelligence multiplied by any percentage increases from items. You can also get a mana regeneration boost by activating a Regeneration Rune.

Mana Items

 * Bloodstone +400 Mana
 * Soul Booster +400 Mana
 * Aghanim's Scepter +150 Mana
 * Arcane Boots +250 Mana
 * Eye of Skadi +150 Mana
 * Energy Booster +250 Mana
 * Point Booster +150 Mana

Mana Regeneration Items

 * Bloodstone +200% Mana Regeneration
 * Linken's Sphere +150% Mana Regeneration
 * Soul Booster +100% Mana Regeneration
 * Scythe of Vyse +150% Mana Regeneration
 * Orchid Malevolence +225% Mana Regeneration
 * Scepter of Divinity +150% Mana Regeneration
 * Refresher Orb +200% Mana Regeneration
 * Urn of Shadows +50% Mana Regeneration
 * Medallion of Courage +50% Mana Regeneration
 * Battlefury +150% Mana Regeneration
 * Soul Ring +50% Mana Regeneration
 * Oblivion Staff +75% Mana Regeneration
 * Perseverance +125% Mana Regeneration
 * Sobi Mask +50% Mana Regeneration
 * Void Stone +100% Mana Regeneration
 * Ring of Basilius +0.65 Mana Regeneration (aura)
 * Clarity Potion 100 Mana over 30 seconds (1 use)
 * Empty Bottle 70 Mana over 3 seconds (3 uses when full)