Mana
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Mana (also known as MP, which is short for mana points) represents the magic power of a unit. It is used as a cost for the majority of active and even some passive abilities. Every hero has a base mana pool of 75, while most non-hero units only have a set mana pool if they have abilities which require mana, with a few exceptions. These values cannot be altered. This means that a hero's maximum mana cannot drop below 75.
Because each point of intelligence increases a hero's mana by 12, a hero's mana pool scales upwards with their intelligence points. Similarly, because every hero has some measure of intelligence growth per level, all heroes gain more and more mana as they continue to level up. A hero's base intelligence cannot drop below 1; however, it is possible to achieve 0 intelligence with the help of negative bonus intelligence.
Contents
Display[edit]
The mana of a unit is displayed in the HUD. For some units, it also may be displayed in the game world.
HUD mana bar[edit]
Mana of the selected unit is displayed in the HUD as a blue bar at the bottom of the screen. The left number at the center of the bar is the unit's current mana points and the right number is its maximum mana points. Though not displayed in the HUD, a unit's total mana does use decimal numbers. The visible numbers in the HUD are always rounded up.
The mana regeneration value is visible on mana bars in the HUD of every unit. Though the HUD shows only one decimal for mana regeneration, it uses more decimals. The value in the HUD is rounded up.
Over-head mana bar[edit]
The mana bar of heroes and creep-heroes are displayed right above their heads, below their health bar. Even when a creep-hero has no mana pool, a mana bar is still drawn below their health bar above them. Other units do not have an overhead mana bar.
There are no different types of mana bars. They do not have lines like the health bars and do not differ from each other in any way.
Modifying mana[edit]
Some heroes, units (neutral creeps and summoned units) and items have abilities that can affect the current and maximum mana pool of units.
Restoring mana[edit]
Just like healing health, a unit's current mana can be increased by many abilities, mostly referred to as restoring mana. Restoring mana cannot increase the unit's mana beyond its maximum mana pool. Spells may restore mana in a burst on a target, restoring an amount of mana in an instance, or restore mana over time, where the amount is split up in multiple instances. The difference between restoring mana and regenerating mana is that restoring is independent from the regeneration ticks. Unlike regeneration, the restore intervals can vary. Restoring mana is not reflected in the regeneration number on the mana bar.
The following abilities restore mana:
Target max mana as mana restored per second: 5%
Duration: 6 (
6)
Drains mana from the target, restoring the caster's mana. Amount of mana restored is independent from how much mana the target actually loses from the spell.
Mana restored per point of mana burnt: 50%
Restores mana on the caster based on how much mana enemy heroes lost to the EMP.
Mana transfered: 105%/120%/135%/150%
Restores mana on the tethered ally based on how much the caster gets restored or how much the caster regenrates mana.
Mana restored: 80/160/240/320 ( 380/460/540/620)
Affects the target ally.
Mana restored per second: 20/40/60/120
Duration: 5
Drains mana from the target, restoring the caster's mana. Amount of mana restored is independent from how much mana the target actually loses from the spell.
Target max mana as mana restored: 11%/14%/17%/20% ( 41%/44%/47%/50%)
Max targets: 3/4/5/6
Drains mana from each target, restoring the caster's mana upon returning. Amount of mana restored depends on how much mana enemies lost to the snake.
Spell damage as mana restored: 65%/90%/115%/140%
Duration: 7
Restores mana on the caster for each point of spell damage dealt during it.
When Supernova finishes without getting destroyed, it fully refreshes the caster's (
and the targeted ally's) mana.
When hooking a rune, the mana spent on the hook gets refunded.
Mana restore per second: 150/225/300
Duration: 10
If the caster is at full health, restores the caster's mana while channeling, instead of healing. Amount of mana restored depends on how much damage the target actually takes from the spell. Can be cast on allies to drain health into them instead.
When cast while already in Ball Lightning, the mana spent to activate it gets refunded.
Mana restored: 160
Restores mana on all allies within range.
Mana restored: 1500
Restores mana on the user.
Mana restored: 125
Restores mana on the user.
Mana restored: 200
Restores mana on all allies within range.
Mana restored per charge: 15 cooldown = 13
Max charges: 10
Gains a charge whenever a nearby enemy casts a spell. Restores mana on the user.
Mana restored per charge: 15 cooldown = 13
Max charges: 20
Gains a charge whenever a nearby enemy casts a spell. Restores mana on the user.
Mana restored: 150
Duration: 10
Restores mana on the user. If the added mana would exceed the user's current mana pool, their maximum mana pool gets temporarily increased by the exceeding amount. At the end of the duration, any of the unspent mana gets lost.
Removing mana[edit]
Most active and some passive abilities need mana in order to be used. This includes item abilities. The mana cost of such are displayed at the bottom left corner of the ability icon in the HUD, and once more inside the ability description in the bottom left corner. Most abilities have a fixed amount of mana cost, but some are dynamic (e.g. based on mana pool, or costing mana over time).
Besides using mana, there are also ways to offensively make units lose mana unvoluntarily. This act may be referred to as burning if it causes damage based on mana removed, draining if the mana is stolen and transfered to another unit, or removed if the mana is simply removed without other effects.
The following abilities remove mana:
Mana removed: 28/40/52/64
Removes mana on the target with each attack. Deals bonus damage based on the removed mana.- Max mana removed per second: 5%
Duration: 6 ( 13)
Removes mana on the target every second. 
Mana removed: 50/80/110/140
Removes mana on shocked enemies.
Mana removed (hero): 50
Mana removed (melee illusion): 16
Mana removed (ranged illusion): 8
Removes mana on the target with each attack. Deals bonus damage based on the removed mana.- Mana removed: 100/175/250/325/400/475/550 ( /625)
Removes mana on each hit enemy. Deals damage based on the removed mana. 
Mana removed per second: 20/40/60
Removes mana on the caster each second until toggled off.- Mana removed per second: 20/40/60/120
Duration: 5
Removes mana on the target every second. 
Mana removed per damage taken: 1.6/1.9/2.2/2.5
Reduces incoming damage by 60%, removing mana for each blocked damage point.- Max mana removed: 11%/14%/17%/20% ( 41%/44%/47%/50%)
Max targets: 3/4/5/6
Removes mana from each hit enemy. 
Mana removed (hero): 25
Mana removed (illusion): 10
Removes mana on the target with each attack. Deals bonus damage based on the removed mana.
Mana removed: 30/40/50
Removes mana on the target with each attack. Deals bonus damage based on the removed mana.
Target intelligence as mana removed: 350%/400%/450%/500%
Removes mana on the target on cast. Deals damage based on the removed mana.
Mana removed: 100
Removes mana on the target on cast. Deals damage based on the removed mana.- Base mana removed per 100 range traveled: 12
Max mana removed per 100 range traveled: 0.7%
Removes mana on the caster for every 100 range traveled. 
Mana removed per second: 0 ( 40)
Requires Aghanim's Scepter Removes mana on the caster each second until toggled off.
Mana removed per second: 8/12/16/20
Removes mana on the caster each second until toggled off.
Mana removed (hero): 20
Mana removed (illusion): 10
Removes mana on the target with each attack. Deals bonus damage based on the removed mana.
Setting mana[edit]
Besides restoring and removing mana, a unit's mana may also be directly altered by setting it to certain values. Mana altered this way is neither registered as a mana restorement, nor as mana removal, and therefore is ignored by anything that reacts on restored or removed mana. It can never set the mana beyond the unit's maximum mana.
Current mana lost: 30%
Duration: 2
Removes mana from the user over the duration, based on their current mana upon cast.
Fully refills the targeted creep's mana pool upon persuading.
Fully refills the creep's mana pool upon taking control over it.
Sets Morphling's mana to what it was before morphing into the target, and back when morphing back into the target again, effectively creating the illusion of two separate mana pools.
Mana gain/loss per gained/lost intelligence: 12
Takes away mana for each lost intelligence point upon losing it, and grants mana back regaining the lost intelligence. Vice versa for the caster.
Max mana lost: 40%
Removes mana from each hit enemy.- Mana lost: 150
At the end of the duration, any of the unspent mana gets lost. 
Mana loss per second: 16/23/30
Removes mana from the caster each second, until returning the Chakram.
Sets the caster's ( the target ally's) mana back to what it was 5 seconds ago.
Maximum mana affecting abilities[edit]
Besides intelligence and raw bonuses from items, there are only very few abilities which can alter a unit's maximum mana.
This list does not include intelligence affecting sources.
Mana granting items[edit]
Many items grant their owners a mana bonus, increasing their maximum mana when equipped, either by increasing their intelligence, or by just giving them a flat bonus. In either case, the current mana percentage stays the same.
The following items increase a unit's maximum mana pool. The effects are limited to the item's owner, which must have the item equipped.
| Item | Value | Item cost | Cost per value point |
|---|---|---|---|
| Aeon Disk | 300 | 3250 | 10.83 |
| Aether Lens | 450 | 2350 | 5.22 |
| Aghanim's Scepter | 295 | 4200 | 14.24 |
| Arcane Boots | 250 | 1400 | 5.6 |
| Blade Mail | 120 | 2200 | 18.33 |
| Bloodstone | 425 | 4900 | 11.53 |
| Bloodthorn | 300 | 7205 | 24.02 |
| Bracer | 36 | 515 | 14.31 |
| Buckler | 24 | 800 | 33.33 |
| Circlet | 24 | 165 | 6.88 |
| Crimson Guard | 24 | 3700 | 154.17 |
| Crown | 48 | 450 | 9.38 |
| Dagon 1 | 216 | 2700 | 12.5 |
| Dagon 2 | 252 | 3950 | 15.67 |
| Dagon 3 | 288 | 5200 | 18.06 |
| Dagon 4 | 324 | 6450 | 19.91 |
| Dagon 5 | 360 | 7700 | 21.39 |
| Diffusal Blade | 120 | 3150 | 26.25 |
| Drum of Endurance | 72 | 1525 | 21.18 |
| Echo Sabre | 120 | 2650 | 22.08 |
| Energy Booster | 250 | 900 | 3.6 |
| Ethereal Blade | 120 | 4700 | 39.17 |
| Eul's Scepter of Divinity | 120 | 2750 | 22.92 |
| Eye of Skadi | 550 | 5500 | 10 |
| Force Staff | 120 | 2250 | 18.75 |
| Ghost Scepter | 60 | 1500 | 25 |
| Guardian Greaves | 310 | 5375 | 17.34 |
| Headdress | 24 | 525 | 21.88 |
| Helm of the Dominator | 24 | 1875 | 78.13 |
| Holy Locket | 325 | 2700 | 8.31 |
| Hurricane Pike | 156 | 4600 | 29.49 |
| Iron Branch | 12 | 50 | 4.17 |
| Kaya | 192 | 2050 | 10.68 |
| Kaya and Sange | 192 | 4100 | 21.35 |
| Linken's Sphere | 156 | 5050 | 32.37 |
| Lotus Orb | 250 | 4000 | 16 |
| Magic Wand | 36 | 450 | 12.5 |
| Manta Style | 120 | 4700 | 39.17 |
| Mantle of Intelligence | 36 | 135 | 3.75 |
| Mekansm | 60 | 2275 | 37.92 |
| Meteor Hammer | 144 | 2625 | 18.23 |
| Mystic Staff | 300 | 2700 | 9 |
| Null Talisman | 72 | 515 | 7.15 |
| Oblivion Staff | 120 | 1650 | 13.75 |
| Octarine Core | 725 | 5900 | 8.14 |
| Orchid Malevolence | 300 | 4075 | 13.58 |
| Pipe of Insight | 24 | 3025 | 126.04 |
| Point Booster | 175 | 1200 | 6.86 |
| Power Treads (Intelligence) | 120 | 1380 | 11.5 |
| Robe of the Magi | 72 | 450 | 6.25 |
| Rod of Atos | 240 | 2750 | 11.46 |
| Scythe of Vyse | 420 | 5700 | 13.57 |
| Shiva's Guard | 360 | 4750 | 13.19 |
| Silver Edge | 180 | 5550 | 30.83 |
| Solar Crest | 120 | 3875 | 32.29 |
| Soul Booster | 425 | 3200 | 7.53 |
| Spirit Vessel | 24 | 2975 | 123.96 |
| Staff of Wizardry | 120 | 1000 | 8.33 |
| Ultimate Orb | 120 | 2150 | 17.92 |
| Urn of Shadows | 24 | 875 | 36.46 |
| Veil of Discord | 180 | 2050 | 11.39 |
| Wraith Band | 36 | 515 | 14.31 |
| Yasha and Kaya | 192 | 4100 | 21.35 |
| Values may include portions from actives or auras. | |||
Mana granting talents[edit]
The following heroes have a talent that grants them a flat mana bonus.
| Bonus | Level 10 | Level 15 | Level 20 | Level 25 | ||||
|---|---|---|---|---|---|---|---|---|
| Left | Right | Left | Right | Left | Right | Left | Right | |
| Mana |
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Mana restore manipulation[edit]
Similar to how incoming damage can be manipulated (reduced, amplified or negated), mana restoring effects can also be manipulated. Mana restore manipulation affects mana regeneration as well, with the mana regen value in the HUD reflecting the amplified/reduced values.
All sources of mana restore amplification and reductions stack additively. Mana negation is absolute and cannot be countered by amplifications.
Mana restore amplification: 75%
Duration: 0.5
Amplifies all incoming mana restoring and mana regeneration effects the caster receives.
Mana loss manipulation[edit]
Several abilities are able to reduce the amount of mana a unit loses. This includes the mana cost of abilities, and mana removed, burned or drained by abilities.
Some abilities reduce mana regeneration, like Nether Ward. In this case, mana loss manipulation works only when the total mana regeneration is negative.
It does not affect mana changes caused by losing or gaining intelligence. Current mana percentages are kept equal upon gaining or losing intelligence, regardless of mana loss reductions. It also has no effect on mana setting effects.
When a spell has extra effects based on the mana loss, these extra effects are not affected by mana loss reduction. For example, Mana Break abilities deal full damage, despite burning less mana and mana draining effects still restore the same amount, despite their targets losing less mana. However, mana loss reduction is applied before the spell is actually cast, causing for example Pugna's Nether Ward do deal reduced damage.
All sources of mana loss manipulation stack additively with each other.
Mana loss reduction: 30%
Duration: 50
Mana loss reduction: 12%
Passive item bonus.
Mana loss reduction: 16%
Passive item bonus.
Mana loss reduction: 16%
Passive item bonus.
On-restore effects[edit]
Similar to how some abilities react on a unit getting damaged, some abilities react on a unit getting mana restored, or on a unit regenerating mana. Only mana gain that is classified as a mana restoring, and mana regeneration trigger on-restore effects. Mana gained in other means (e.g. getting mana set) does not trigger it.
Besides mana restore amplifications, the following abilities react on restoring and regeneration.
Abilities modified by mana[edit]
These abilities have effects that are based on maximum mana.
Expire max mana restored per second: 20%
When expiring, restores health and mana based on the maximum health and mana pools.- Max mana drained per second: 5%
Duration: 6 ( 13)
Drains mana based on the target's maximum mana pool. - Max mana converted to health regen: 30%
Duration: 2
Removes a percentage of the the user's maximum mana pool. Grants the user health regeneration based on the removed mana. 
Max mana as regen bonus: 6%
Restores health and mana based on the maximum health and mana pools.- Max mana drained: 11%/14%/17%/20% ( 41%/44%/47%/50%)
Max targets: 3/4/5/6
Drains mana based on the targets' maximum mana pool. 
Max mana as regen bonus: 1.5%
Restores health and mana based on the maximum health and mana pools.
Max mana restored per second: 6%
Duration: 30
Restores health and mana based on the maximum health and mana pools.
Max mana restored per second: 2%
Restores health and mana based on the maximum health and mana pools, on top of flat values.
Besides illusions, whose current health and mana depend on the current health and mana of the unit they are based on, no remaining abilities have effects that are based on current mana.
These abilities have mana-based effects as well
Damage per missing mana: 0.8/0.95/1.1
Deals damage to the target and in an area around it based on how much mana the target is missing.
Damage per spent mana: 1.25/1.5/1.75/2 ( 3/3.25/3.5/3.75)
Deals damage to any nearby enemy that dares to spend mana in any way.
Mana regeneration[edit]
Mana Regeneration determines the amount of mana a unit regains each second. It is shown as a small number with a + sign at the right side of the unit's mana bar.
Version history[edit]
- Reworked Mana regen from attributes. It is no longer a multiplier of your regeneration value.
- Mana Regen: Intelligence now provides 0.05 mana regeneration.
- Mana Regen: Removed the 0.9 base mana regen value. (Now covered by Base Intelligence.)
- Rebalanced attribute bonuses. Primary attributes now provide +25% more benefit to the bonuses it provides.
- Mana per intelligence rescaled from 12 [?] to 12 [?].
- Mana regen amp per intelligence rescaled from 2% [?] to 1.8% [?].
- Increased mana per intelligence from 11 to 12.
- Reworked mana regeneration formula to change percentage bonuses to raw bonuses.
- Old: (0.01 + 0.04 * Int) * (1 + Percentages Bonuses) + Flat Bonuses
- New: (Base + Flat Bonuses) and increases by 2% Per Intelligence
- Each point of Intelligence amplifies mana regeneration by 2%.
- All heroes currently have 0.9 base, but may be adjusted on case by case basis in the future (like base HP regen is now).
- Talents, abilities and items have been adjusted to account for the new formula.
- Increased hero base mana pool from 50 to 75
- Reduced mana per intelligence from 12 to 11.
- Increased hero base mana pool from 0 to 50.
- Reduced mana per intelligence from 13 to 12.
- Heroes now respawn with full mana.
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