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Mana reservation

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Reserved mana is shown grey on the mana orb.

Mana reservation is an alternative method of using mana to pay for skills which is usually found on skills with an ongoing effect, such as auras and heralds. Rather than paying the mana cost once as with normal skills, a portion of mana is set aside as unusable for as long as the skill is active. Having mana reserved does not reduce the rate of mana regeneration, so it will reduce the time taken for mana to regenerate to its (temporary) maximum.

Reserved mana values are multiplied by support gem mana cost multipliers as usual. The Blood Magic passive will cause life to be reserved instead of mana.

Skills which reserve mana

Mana can be reserved in two ways:

  • By a fixed amount, which grows as the gem levels
  • By a percentage of maximum mana, which does not change with gem level
Skill gemStr.Dex.Int.Lvl.Mana

Reducing mana reservation

The amount reserved can be reduced by passives or items with the "Reduced Mana Reserved" or "Less Mana Reserved" properties. The amount reserved will NOT be reduced by the property "Reduced Skill Cost" such as from the Reduced Mana SupportReduced Mana SupportSupport
Icon: r
Requires Level 31Supports any skill with a mana cost. Does not support skills that reserve mana.Per 1% Quality:
Supported Skills have 0.25% reduced Mana Cost
Supported Skills have (25-34)% reduced Mana CostThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
support gem. Elreon's items will not reduce reservation costs either.

The total of all "Reduced Mana Reserved" modifiers whether from passives, jewels, or items, is summed before being applied. However "less" modifiers, and mana multipliers such as that granted by Enlighten SupportEnlighten SupportSupport
Icon: +
Supports any skill gem. Once this gem reaches level 2 or above, will apply a mana multiplier to supported gems. Cannot support skills that don't come from gems.Per 1% Quality:
This Gem gains 5% increased Experience
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
each apply as separate multiplications.

Essences

The essence type Essence of LoathingDeafening Essence of LoathingStack Size: 9
Essence Tier: 7
Upgrades a normal item to rare or reforges a rare item, guaranteeing one property

Weapon: (35-38)% increased Critical Strike Chance
Gloves: (24-26)% increased Global Critical Strike Chance
Helmet: 5% reduced Mana Reserved
Other Armour: (9-10)% chance to Dodge Attacks
Shield: (7-8)% Chance to Block
Quiver: (39-42)% increased Global Critical Strike Chance
Amulet: (39-42)% increased Global Critical Strike Chance
Ring: (24-26)% increased Global Critical Strike Chance
Belt: (36-39)% increased Stun Duration on Enemies
Right click this item then left click a normal or rare item to apply it.
Shift click to unstack.
can be used to guarantee a +2-5% reduced mana reserved modifier on helmets.

Passive skills

The passive skills with "reduced" reservation are all part of aura themed clusters.

There is a total of 14% reduction in the cluster in the outer Templar area, 12% in the cluster between Ranger and Shadow, and 4% each in the clusters in the Shadow, outer Duelist, and outer Scion areas. There is a single "Less" passive, Mortal Conviction, which lies behind Blood Magic so will be reducing Life reserved, not Mana.

Passives which reduce mana reserved:

Name Bonuses
Reduced Mana Reservation
  • 4% reduced Mana Reserved
Charisma
  • 8% reduced Mana Reserved
  • 6% increased effect of Non-Curse Auras you Cast
Sovereignty
  • 6% reduced Mana Reserved
  • 10% increased effect of Non-Curse Auras you Cast
Champion of the Cause
  • 4% reduced Mana Reserved
  • 20% increased Area of Effect of Aura Skills
  • 6% increased effect of Non-Curse Auras you Cast
Mortal Conviction
  • 15% increased maximum Life
  • 50% less Mana Reserved

Unique items

These unique items provide reduced or increased reservation:

ItemLvl.Stats
Conqueror's Efficiency
Conqueror's Efficiency
Crimson Jewel
Limited to: 12% reduced Mana Reserved
4% increased Skill Effect Duration
3% reduced Mana Cost of Skills
The stone may yet bleed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
12% reduced Mana Reserved
4% increased Skill Effect Duration
3% reduced Mana Cost of Skills
Essence Worm
Essence Worm
Unset Ring
Requires Level 38Has 1 Socket+2 to Level of Socketed Aura Gems
Socketed Gems Reserve No Mana
40% increased Mana Reserved
"This thing is not a pet. It is a parasite that feeds on the very will of its host.
Like any part of nightmare, it has found a way to make its price... acceptable."
- Malachai the Soulless
38Has 1 Socket+2 to Level of Socketed Aura Gems
Socketed Gems Reserve No Mana
40% increased Mana Reserved
Victario's Influence
Victario's Influence
Lacquered Garb
Quality: +20%
Evasion: (686 to 772)
Energy Shield: (134 to 151)
Requires Level 52, 76 Dex, 76 Int3% reduced Movement Speed (Hidden)+1 to Level of Socketed Aura Gems
Socketed Gems are Supported by Level 30 Generosity
Socketed Gems have 30% reduced Mana Reservation
(120-150)% increased Evasion and Energy Shield
(20-40)% increased Area of Effect of Aura Skills
(10-15)% increased effect of Non-Curse Auras you Cast
"Every life is a story.
If you're not writing your own,
you'd better know who's writing it for you!"
- Victario, the People's Poet
523% reduced Movement Speed (Hidden)+1 to Level of Socketed Aura Gems
Socketed Gems are Supported by Level 30 Generosity
Socketed Gems have 30% reduced Mana Reservation
(120-150)% increased Evasion and Energy Shield
(20-40)% increased Area of Effect of Aura Skills
(10-15)% increased effect of Non-Curse Auras you Cast
Ichimonji
Ichimonji
Corsair Sword
One Hand Swords
Quality: +20%
Physical Damage: (50 to 64.5)(186 to 215)
Critical Strike Chance: 5.00%
Attacks per Second: (1.86 to 1.94)
Weapon Range: 9
Requires Level 58, 81 Str, 117 Dex40% increased Accuracy Rating(80-95)% increased Physical Damage
Adds (5-10) to (13-20) Physical Damage
(20-25)% increased Attack Speed
10% increased Effect of Buffs on You
5% reduced Mana Reserved
Allies' Aura Buffs do not affect you
Your Aura Buffs do not affect allies
Master yourself before you seek to master others.
5840% increased Accuracy Rating(80-95)% increased Physical Damage
Adds (5-10) to (13-20) Physical Damage
(20-25)% increased Attack Speed
10% increased Effect of Buffs on You
5% reduced Mana Reserved
Allies' Aura Buffs do not affect you
Your Aura Buffs do not affect allies
Impresence
Impresence
Onyx Amulet
Requires Level 64+(10-16) to all AttributesAdds (10-13) to (43-47) Lightning Damage
+(50-70) to maximum Life
+(20-25)% to Lightning Resistance
1% of Energy Shield Regenerated per second
100% reduced Conductivity Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Though its body was locked in stone,
its essence wandered the infinite,
learning, and preparing.
64+(10-16) to all AttributesAdds (10-13) to (43-47) Lightning Damage
+(50-70) to maximum Life
+(20-25)% to Lightning Resistance
1% of Energy Shield Regenerated per second
100% reduced Conductivity Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Impresence
Impresence
Onyx Amulet
Requires Level 64+(10-16) to all AttributesAdds (12-16) to (20-25) Physical Damage
+(400-500) to Armour
+(50-70) to maximum Life
(30-40)% increased Stun and Block Recovery
100% reduced Vulnerability Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Though its body was locked in stone,
its essence wandered the infinite,
learning, and preparing.
64+(10-16) to all AttributesAdds (12-16) to (20-25) Physical Damage
+(400-500) to Armour
+(50-70) to maximum Life
(30-40)% increased Stun and Block Recovery
100% reduced Vulnerability Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Impresence
Impresence
Onyx Amulet
Requires Level 64+(10-16) to all Attributes(30-40)% increased Damage over Time
Adds (17-19) to (23-29) Chaos Damage
+(50-70) to maximum Life
+(17-23)% to Chaos Resistance
100% reduced Despair Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Though its body was locked in stone,
its essence wandered the infinite,
learning, and preparing.
64+(10-16) to all Attributes(30-40)% increased Damage over Time
Adds (17-19) to (23-29) Chaos Damage
+(50-70) to maximum Life
+(17-23)% to Chaos Resistance
100% reduced Despair Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Impresence
Impresence
Onyx Amulet
Requires Level 64+(10-16) to all AttributesAdds (20-24) to (33-36) Cold Damage
+(50-70) to maximum Life
(45-50)% increased Mana Regeneration Rate
+(20-25)% to Cold Resistance
100% reduced Frostbite Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Though its body was locked in stone,
its essence wandered the infinite,
learning, and preparing.
64+(10-16) to all AttributesAdds (20-24) to (33-36) Cold Damage
+(50-70) to maximum Life
(45-50)% increased Mana Regeneration Rate
+(20-25)% to Cold Resistance
100% reduced Frostbite Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Impresence
Impresence
Onyx Amulet
Requires Level 64+(10-16) to all AttributesAdds (20-24) to (33-36) Fire Damage
+(50-70) to maximum Life
+(20-25)% to Fire Resistance
1% of Life Regenerated per second
100% reduced Flammability Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Though its body was locked in stone,
its essence wandered the infinite,
learning, and preparing.
64+(10-16) to all AttributesAdds (20-24) to (33-36) Fire Damage
+(50-70) to maximum Life
+(20-25)% to Fire Resistance
1% of Life Regenerated per second
100% reduced Flammability Mana Reservation
Gain Maddening Presence for 10 seconds when you Kill a Rare or Unique Enemy
Heretic's Veil
Heretic's Veil
Deicide Mask
Quality: +20%
Evasion: (399 to 436)
Energy Shield: (178 to 218)
Requires Level 67, 73 Dex, 88 Int+(40-50) to maximum Energy Shield
(90-110)% increased Evasion and Energy Shield
+1 to Level of Socketed Curse Gems
Socketed Curse Gems are Supported by Level 22 Blasphemy
12% reduced Effect of Socketed Jewels
Branded a heretic for your beliefs,
You stand alone against many.
May the truth that fuels their anger,
Carry your blade into their hearts.
67+(40-50) to maximum Energy Shield
(90-110)% increased Evasion and Energy Shield
+1 to Level of Socketed Curse Gems
Socketed Curse Gems are Supported by Level 22 Blasphemy
12% reduced Effect of Socketed Jewels
Skyforth
Skyforth
Sorcerer Boots
Quality: +20%
Energy Shield: 58
Requires Level 67, 123 Int+(60-120) to maximum Mana
30% increased Movement Speed
25% chance to gain a Power Charge on Critical Strike
6% reduced Mana Reserved
You have no Life Regeneration
Stun Threshold is based on 500% of your Mana instead of Life
The quick die young, the brilliant go mad,
and the powerful stand alone in a wasteland of their own creation.
67+(60-120) to maximum Mana
30% increased Movement Speed
25% chance to gain a Power Charge on Critical Strike
6% reduced Mana Reserved
You have no Life Regeneration
Stun Threshold is based on 500% of your Mana instead of Life
Memory Vault
Memory Vault
Praetor Crown
Quality: +20%
Armour: 193
Energy Shield: (213 to 249)
Requires Level 68, 62 Str, 91 Int+(130-160) to maximum Energy Shield
+(150-200) to maximum Mana
(30-40)% increased Mana Regeneration Rate
+(20-30)% to Fire Resistance
10% increased Mana Reserved
Gain Armour equal to your Reserved Mana
Your memories are a bridge to the past. Let no one cross.
68+(130-160) to maximum Energy Shield
+(150-200) to maximum Mana
(30-40)% increased Mana Regeneration Rate
+(20-30)% to Fire Resistance
10% increased Mana Reserved
Gain Armour equal to your Reserved Mana
Prism Guardian
Prism Guardian
Archon Kite Shield
Quality: +20%
Chance to Block: 22%
Armour: 187
Energy Shield: 36
Requires Level 68, 85 Str, 85 Int3% reduced Movement Speed (Hidden)
+12% to all Elemental Resistances
+2 to Level of Socketed Aura Gems
Socketed Gems have Blood Magic
Socketed Gems have 25% reduced Mana Reservation
+(20-30) to Dexterity
+25% to all Elemental Resistances
When blood is paid, the weak think twice.
683% reduced Movement Speed (Hidden)
+12% to all Elemental Resistances+2 to Level of Socketed Aura Gems
Socketed Gems have Blood Magic
Socketed Gems have 25% reduced Mana Reservation
+(20-30) to Dexterity
+25% to all Elemental Resistances

Reservation calculations

The calculation to determine the reservation cost of an aura is ceiling(ceiling(floor(base Mana Reserved * Mana Multiplier) * (100% - less Mana Reserved)) * (100% - reduced Mana Reserved)).
With equipment and passives available as of version 2.3, each category includes the following.

  • Mana Multiplier: Enlighten SupportEnlighten SupportSupport
    Icon: +
    Supports any skill gem. Once this gem reaches level 2 or above, will apply a mana multiplier to supported gems. Cannot support skills that don't come from gems.Per 1% Quality:
    This Gem gains 5% increased Experience
    This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
    and corrupting a Body Armour with a Vaal Orb can give the item "Skill Gems in this item get a 95% Mana Multiplier" as an implicit.
  • Less Mana Reserved: Mortal Conviction.
  • Reduced Mana Reserved: All passive nodes which provide "reduced Mana Reserved", Conqueror's EfficiencyConqueror's Efficiency
    Crimson Jewel
    Limited to: 12% reduced Mana Reserved
    4% increased Skill Effect Duration
    3% reduced Mana Cost of Skills
    The stone may yet bleed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
    , Module Error: Item link: No results found for search parameter "alpha's howl"., Prism GuardianPrism Guardian
    Archon Kite Shield
    Quality: +20%
    Chance to Block: 22%
    Armour: 187
    Energy Shield: 36
    Requires Level 68, 85 Str, 85 Int3% reduced Movement Speed (Hidden)
    +12% to all Elemental Resistances
    +2 to Level of Socketed Aura Gems
    Socketed Gems have Blood Magic
    Socketed Gems have 25% reduced Mana Reservation
    +(20-30) to Dexterity
    +25% to all Elemental Resistances
    When blood is paid, the weak think twice.
    , and SkyforthSkyforth
    Sorcerer Boots
    Quality: +20%
    Energy Shield: 58
    Requires Level 67, 123 Int+(60-120) to maximum Mana
    30% increased Movement Speed
    25% chance to gain a Power Charge on Critical Strike
    6% reduced Mana Reserved
    You have no Life Regeneration
    Stun Threshold is based on 500% of your Mana instead of Life
    The quick die young, the brilliant go mad,
    and the powerful stand alone in a wasteland of their own creation.
    .

Examples of this calculation are as follows.

4% reduced Mana Reserved, and HatredHatredAura, Spell, AoE, Cold
Radius: 36
Mana Reserved: 50%
Can store 1 use(s)
Cooldown Time: 1.20 sec
Cast Time: 1.20 sec
Requires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality:
1% increased Area of Effect
You and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage
+(0-19) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Hatred skill icon.png
:
ceiling(floor(50%)*(100%-4%)) = ceiling(floor(50%)*96%) = ceiling(49%*96%) = ceiling(48%) = 48%

Mortal Conviction, 6% reduced Mana Reserved, Prism GuardianPrism Guardian
Archon Kite Shield
Quality: +20%
Chance to Block: 22%
Armour: 187
Energy Shield: 36
Requires Level 68, 85 Str, 85 Int3% reduced Movement Speed (Hidden)
+12% to all Elemental Resistances
+2 to Level of Socketed Aura Gems
Socketed Gems have Blood Magic
Socketed Gems have 25% reduced Mana Reservation
+(20-30) to Dexterity
+25% to all Elemental Resistances
When blood is paid, the weak think twice.
, and HatredHatredAura, Spell, AoE, Cold
Radius: 36
Mana Reserved: 50%
Can store 1 use(s)
Cooldown Time: 1.20 sec
Cast Time: 1.20 sec
Requires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality:
1% increased Area of Effect
You and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage
+(0-19) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Hatred skill icon.png
:
ceiling(ceiling(floor(50%)*(100%-50%))*(100%-(6%+25%))) = ceiling(ceiling(floor(50%)*50%)*69%) = ceiling(ceiling(50%*50%)*69%) = ceiling(ceiling(25%)*69%) = ceiling(25%*69%) = ceiling(17.25%) = 18%

Or, in the most extreme case, Mortal Conviction, 38% reduced Mana Reserved, Conqueror's EfficiencyConqueror's Efficiency
Crimson Jewel
Limited to: 12% reduced Mana Reserved
4% increased Skill Effect Duration
3% reduced Mana Cost of Skills
The stone may yet bleed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
, Module Error: Item link: No results found for search parameter "alpha's howl"., SkyforthSkyforth
Sorcerer Boots
Quality: +20%
Energy Shield: 58
Requires Level 67, 123 Int+(60-120) to maximum Mana
30% increased Movement Speed
25% chance to gain a Power Charge on Critical Strike
6% reduced Mana Reserved
You have no Life Regeneration
Stun Threshold is based on 500% of your Mana instead of Life
The quick die young, the brilliant go mad,
and the powerful stand alone in a wasteland of their own creation.
, Prism GuardianPrism Guardian
Archon Kite Shield
Quality: +20%
Chance to Block: 22%
Armour: 187
Energy Shield: 36
Requires Level 68, 85 Str, 85 Int3% reduced Movement Speed (Hidden)
+12% to all Elemental Resistances
+2 to Level of Socketed Aura Gems
Socketed Gems have Blood Magic
Socketed Gems have 25% reduced Mana Reservation
+(20-30) to Dexterity
+25% to all Elemental Resistances
When blood is paid, the weak think twice.
with +1 to Level of Gems in this item corrupted implicit, level 4 Enlighten SupportEnlighten SupportSupport
Icon: +
Supports any skill gem. Once this gem reaches level 2 or above, will apply a mana multiplier to supported gems. Cannot support skills that don't come from gems.Per 1% Quality:
This Gem gains 5% increased Experience
This is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.
, and HatredHatredAura, Spell, AoE, Cold
Radius: 36
Mana Reserved: 50%
Can store 1 use(s)
Cooldown Time: 1.20 sec
Cast Time: 1.20 sec
Requires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality:
1% increased Area of Effect
You and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage
+(0-19) to radius
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Hatred skill icon.png
:
ceiling(ceiling(floor(50%*84%)*(100%-50%))*(100%-(38%+8%+8%+25%))) = ceiling(ceiling(floor(42%)*50%)*21%) = ceiling(ceiling(42%*50%)*21%) = ceiling(ceiling(21%)*21%) = ceiling(21%*21%) = ceiling(4.41%) = 5%

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