Reservation

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

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 Inspiration SupportInspiration SupportCritical, Support
Icon: r
Level: (1-20)
Cost & Reservation Multiplier: 120%Requires Level 31Supports any skill. Minions, Totems, Traps and Mines cannot gain Inspiration Charges.Supported Skills have (25-34)% reduced Mana Cost
Gain an Inspiration Charge when you Spend Mana on Upfront
Costs or Effects of Supported Skills
Supported Skills have (6-8)% increased Critical Strike Chance per Inspiration Charge
Supported Skills deal (3-5)% more Elemental Damage per Inspiration Charge
Lose all Inspiration Charges after Spending a total of (122-800) Mana on Upfront Costs and Effects of Supported Skills

Additional Effects From 1-20% Quality:
Supported Skills have (0.25-5)% 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 Skill Gem you wish to augment. Right click to remove from a socket. support gem. Flat mana cost reduction such as Elreon's mod 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 SupportExceptional, Support
Icon: +
Level: (1-3)
Cost & Reservation Multiplier: (100-92)%Supports any skill gem. Once this gem reaches level 2 or above, will apply a cost & reservation multiplier to supported gems. Cannot support skills that don't come from gems.
Additional Effects From 1-20% Quality:
This Gem gains (5-100)% increased ExperienceThis 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 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: 7Upgrades 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
Boots: (31-35)% chance to Avoid Elemental Ailments
Shield: +(12-13)% Chance to Block
Other Armour: (9-10)% increased Mana Reservation Efficiency of Skills
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 EnemiesRight click this item then left click a normal or rare item to apply it. 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: No results found for the given query.

Unique items

These unique items provide reduced or increased reservation:

Item		Stats
VivinsectVivinsect Unset RingRequires Level 45Has 1 Socket+5 to Level of Socketed Aura Gems Socketed Gems have 20% reduced Reservation Efficiency +(15-25) to all Attributes Regenerate 15 Life per second for each Uncorrupted Item Equipped -2 to Total Mana Cost of Skills for each Corrupted Item Equipped Veiled Suffix"Fusing the parasite with another ring has manifested unpredictable effects. I theorise the sacrificial vessel's level of anguish is a key variable. - Arzaak, Syndicate ResearcherTake this item to Jun Ortoi to have her Unveil it.	45	Has 1 Socket+5 to Level of Socketed Aura Gems Socketed Gems have 20% reduced Reservation Efficiency +(15-25) to all Attributes Regenerate 15 Life per second for each Uncorrupted Item Equipped -2 to Total Mana Cost of Skills for each Corrupted Item Equipped Veiled Suffix +(16-20)% to Cold and Chaos Resistances +(16-20)% to Fire and Chaos Resistances +(16-20)% to Lightning and Chaos Resistances +(31-35) to Dexterity and Intelligence +(31-35) to Strength and Dexterity +(31-35) to Strength and Intelligence +1 to Minimum Endurance Charges (3-4)% chance to gain an Endurance Charge on Kill +1 to Minimum Frenzy Charges (3-4)% chance to gain a Frenzy Charge on Kill +1 to Minimum Power Charges (3-4)% chance to gain a Power Charge on Kill Shock nearby Enemies for 4 Seconds when you Focus Focus has (5-8)% increased Cooldown Recovery Rate
Victario's InfluenceVictario's Influence Lacquered GarbEvasion: (629-822) Energy Shield: (129-170) Movement Speed: -3%Requires Level 52, 76 Dex, 76 Int+1 to Level of Socketed Aura Gems Socketed Gems are Supported by Level 30 Generosity Socketed Gems have 45% increased Reservation Efficiency (120-150)% increased Evasion and Energy Shield (20-40)% increased Area of Effect of Aura Skills (10-15)% increased effect of Non-Curse Auras from your Skills"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	52	+1 to Level of Socketed Aura Gems Socketed Gems are Supported by Level 30 Generosity Socketed Gems have 45% increased Reservation Efficiency (120-150)% increased Evasion and Energy Shield (20-40)% increased Area of Effect of Aura Skills (10-15)% increased effect of Non-Curse Auras from your Skills
The Devouring DiademThe Devouring Diadem Necromancer CircletEnergy Shield: (154-204)Requires Level 54, 112 Int+1 to Level of Socketed Gems Socketed Gems have 25% increased Reservation Efficiency Trigger Level 15 Feast of Flesh every 5 seconds (180-220)% increased Energy Shield 10% chance for Energy Shield Recharge to start when you use a Skill Eldritch Battery Veiled SuffixThe spirit hungers for the flesh.Take this item to Jun Ortoi to have her Unveil it.	54	+1 to Level of Socketed Gems Socketed Gems have 25% increased Reservation Efficiency Trigger Level 15 Feast of Flesh every 5 seconds (180-220)% increased Energy Shield 10% chance for Energy Shield Recharge to start when you use a Skill Eldritch Battery Veiled Suffix (10-12)% chance to Avoid Elemental Damage from Hits during Soul Gain Prevention +(16-20)% to Cold and Chaos Resistances +(31-35) to Dexterity and Intelligence +(16-20)% to Fire and Chaos Resistances +(16-20)% to Lightning and Chaos Resistances (14-16)% increased Mine Throwing Speed (36-40)% increased Duration of Ailments you inflict while Focused +(31-35) to Strength and Dexterity +(31-35) to Strength and Intelligence Trigger Socketed Spells when you Focus, with a 0.25 second Cooldown Focus has (5-8)% increased Cooldown Recovery Rate
Rotblood PromiseRotblood Promise Unset RingRequires Level 56Has 1 SocketSocketed Gems are Supported by Level 20 Blasphemy Curse Auras from Socketed Skills also affect you Socketed Curse Gems have 80% increased Reservation Efficiency +(20-30) to Intelligence 20% reduced Effect of Curses on you (15-25)% increased Damage with Hits and Ailments against Cursed EnemiesAccept the infection, let it take hold. Then carry it far and wide.	56	Has 1 SocketSocketed Gems are Supported by Level 20 Blasphemy Curse Auras from Socketed Skills also affect you Socketed Curse Gems have 80% increased Reservation Efficiency +(20-30) to Intelligence 20% reduced Effect of Curses on you (15-25)% increased Damage with Hits and Ailments against Cursed Enemies
Heretic's VeilHeretic's Veil Deicide MaskEvasion: (361-459) Energy Shield: (165-218)Requires Level 67, 73 Dex, 88 Int+2 to Level of Socketed Curse Gems Socketed Gems are Supported by Level 22 Blasphemy Socketed Curse Gems have 30% increased Reservation Efficiency (90-110)% increased Evasion and Energy Shield +(40-50) to maximum Energy ShieldBranded a heretic for your beliefs, You stand alone against many. May the truth that fuels their anger, Carry your blade into their hearts.	67	+2 to Level of Socketed Curse Gems Socketed Gems are Supported by Level 22 Blasphemy Socketed Curse Gems have 30% increased Reservation Efficiency (90-110)% increased Evasion and Energy Shield +(40-50) to maximum Energy Shield
Prism GuardianPrism Guardian Archon Kite ShieldChance to Block: 22% Armour: (156-179) Energy Shield: (32-37) Movement Speed: -3%Requires Level 68, 85 Str, 85 Int+12% to all Elemental Resistances+2 to Level of Socketed Aura Gems Socketed Gems Cost and Reserve Life instead of Mana Socketed Gems have 30% increased Reservation Efficiency +(20-30) to Dexterity +25% to all Elemental ResistancesWhen blood is paid, the weak think twice.	68	+12% to all Elemental Resistances+2 to Level of Socketed Aura Gems Socketed Gems Cost and Reserve Life instead of Mana Socketed Gems have 30% increased Reservation Efficiency +(20-30) to Dexterity +25% to all Elemental Resistances

Reservation calculations

The calculation to determine the reservation cost of an aura is:

$$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil \lceil \lfloor m\times M\rfloor \times (100\%-l)\rceil \times (100\%-r)\rceil$$

Where $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}m$ = Base Mana Reserved, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}M$ = Mana Multipler, $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}l$ = Less Mana Reserved, and $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}r$ = Reduced Mana Reserved.

With equipment and passives available as of version 2.3, each category includes the following.

• Mana Multiplier: Enlighten SupportEnlighten SupportExceptional, Support
  Icon: +
  Level: (1-3)
  Cost & Reservation Multiplier: (100-92)%Supports any skill gem. Once this gem reaches level 2 or above, will apply a cost & reservation multiplier to supported gems. Cannot support skills that don't come from gems.
  Additional Effects From 1-20% Quality:
  This Gem gains (5-100)% increased ExperienceThis 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 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 JewelLimited to: 13% reduced Mana Cost of Skills
  4% increased Skill Effect Duration
  4% increased Mana Reservation Efficiency of SkillsThe stone may yet bleed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket., Alpha's HowlAlpha's Howl
  Sinner TricorneEvasion: (664-850)Requires Level 64, 138 Dex+2 to Level of Socketed Aura Gems
  (80-100)% increased Evasion Rating
  +(20-30)% to Cold Resistance
  25% chance to Avoid being Chilled
  Cannot be Frozen
  16% increased Mana Reservation Efficiency of SkillsNature respects the strong
  And paints the snow red
  With the blood of the weak, Prism GuardianPrism Guardian
  Archon Kite ShieldChance to Block: 22%
  Armour: (156-179)
  Energy Shield: (32-37)
  Movement Speed: -3%Requires Level 68, 85 Str, 85 Int+12% to all Elemental Resistances+2 to Level of Socketed Aura Gems
  Socketed Gems Cost and Reserve Life instead of Mana
  Socketed Gems have 30% increased Reservation Efficiency
  +(20-30) to Dexterity
  +25% to all Elemental ResistancesWhen blood is paid, the weak think twice., and SkyforthSkyforth
  Sorcerer BootsEnergy Shield: (51-59)Requires Level 67, 123 Int+(60-120) to maximum Mana
  30% increased Movement Speed
  25% chance to gain a Power Charge on Critical Strike
  12% increased Reservation Efficiency of Skills
  You have no Life Regeneration
  Stun Threshold is based on 500% of your Mana instead of LifeThe 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.

1. 4% reduced Mana Reserved, and HatredHatredAura, Spell, AoE, Cold
   Level: (1-20)
   Reservation: 50% Mana
   Cooldown Time: 1.20 sec
   Can Store 1 Use(s)
   Cast Time: Instant
   AoE Radius: 36Requires Level 24Casts an aura that grants extra cold damage based on physical damage to you and your allies.+(0-1.9) metres to radius
   You and nearby allies gain (16-25)% of Physical Damage as Extra Cold Damage
   You and nearby allies deal (14-18)% more Cold Damage
   
   Additional Effects From 1-20% Quality:
   (2-40)% increased Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil \lfloor 50\%\rfloor \times (100\%-4\%)\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil 50\%\times 96\%\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}48\%$$
2. Mortal Conviction, 6% reduced Mana Reserved, Prism GuardianPrism Guardian
   Archon Kite ShieldChance to Block: 22%
   Armour: (156-179)
   Energy Shield: (32-37)
   Movement Speed: -3%Requires Level 68, 85 Str, 85 Int+12% to all Elemental Resistances+2 to Level of Socketed Aura Gems
   Socketed Gems Cost and Reserve Life instead of Mana
   Socketed Gems have 30% increased Reservation Efficiency
   +(20-30) to Dexterity
   +25% to all Elemental ResistancesWhen blood is paid, the weak think twice., and HatredHatredAura, Spell, AoE, Cold
   Level: (1-20)
   Reservation: 50% Mana
   Cooldown Time: 1.20 sec
   Can Store 1 Use(s)
   Cast Time: Instant
   AoE Radius: 36Requires Level 24Casts an aura that grants extra cold damage based on physical damage to you and your allies.+(0-1.9) metres to radius
   You and nearby allies gain (16-25)% of Physical Damage as Extra Cold Damage
   You and nearby allies deal (14-18)% more Cold Damage
   
   Additional Effects From 1-20% Quality:
   (2-40)% increased Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil \lceil \lfloor 50\%\rfloor \times (100\%-50\%)\rceil \times (100\%-(6\%+25\%))\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil \lceil 50\%\times 50\%\rceil \times (100\%-31\%)\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil 25\%\times 69\%\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}18\%$$
3. Or, in the most extreme case, Mortal Conviction, 38% reduced Mana Reserved, Conqueror's EfficiencyConqueror's Efficiency
   Crimson JewelLimited to: 13% reduced Mana Cost of Skills
   4% increased Skill Effect Duration
   4% increased Mana Reservation Efficiency of SkillsThe stone may yet bleed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket., Alpha's HowlAlpha's Howl
   Sinner TricorneEvasion: (664-850)Requires Level 64, 138 Dex+2 to Level of Socketed Aura Gems
   (80-100)% increased Evasion Rating
   +(20-30)% to Cold Resistance
   25% chance to Avoid being Chilled
   Cannot be Frozen
   16% increased Mana Reservation Efficiency of SkillsNature respects the strong
   And paints the snow red
   With the blood of the weak, SkyforthSkyforth
   Sorcerer BootsEnergy Shield: (51-59)Requires Level 67, 123 Int+(60-120) to maximum Mana
   30% increased Movement Speed
   25% chance to gain a Power Charge on Critical Strike
   12% increased Reservation Efficiency of Skills
   You have no Life Regeneration
   Stun Threshold is based on 500% of your Mana instead of LifeThe quick die young, the brilliant go mad,
   and the powerful stand alone in a wasteland of their own creation., Prism GuardianPrism Guardian
   Archon Kite ShieldChance to Block: 22%
   Armour: (156-179)
   Energy Shield: (32-37)
   Movement Speed: -3%Requires Level 68, 85 Str, 85 Int+12% to all Elemental Resistances+2 to Level of Socketed Aura Gems
   Socketed Gems Cost and Reserve Life instead of Mana
   Socketed Gems have 30% increased Reservation Efficiency
   +(20-30) to Dexterity
   +25% to all Elemental ResistancesWhen blood is paid, the weak think twice. with +1 to Level of Gems in this item corrupted implicit, level 4 Enlighten SupportEnlighten SupportExceptional, Support
   Icon: +
   Level: (1-3)
   Cost & Reservation Multiplier: (100-92)%Supports any skill gem. Once this gem reaches level 2 or above, will apply a cost & reservation multiplier to supported gems. Cannot support skills that don't come from gems.
   Additional Effects From 1-20% Quality:
   This Gem gains (5-100)% increased ExperienceThis 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 Skill Gem you wish to augment. Right click to remove from a socket., and HatredHatredAura, Spell, AoE, Cold
   Level: (1-20)
   Reservation: 50% Mana
   Cooldown Time: 1.20 sec
   Can Store 1 Use(s)
   Cast Time: Instant
   AoE Radius: 36Requires Level 24Casts an aura that grants extra cold damage based on physical damage to you and your allies.+(0-1.9) metres to radius
   You and nearby allies gain (16-25)% of Physical Damage as Extra Cold Damage
   You and nearby allies deal (14-18)% more Cold Damage
   
   Additional Effects From 1-20% Quality:
   (2-40)% increased Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil \lceil \lfloor 50\%\times 84\%\rfloor \times (100\%-50\%)\rceil \times (100\%-(38\%+8\%+8\%+25\%))\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil \lceil 42\%\times 50\%\rceil \times 21\%\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}\lceil 21\%\times 21\%\rceil$$
   $$\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}5\%$$

External links

• Mikelat's Path of Exile Aura Calculator