Reservation

Reserved mana is shown grey on the mana orb.

Mana reservation is a method of using mana to pay for auras, herald skills, mine skills, or any skill with an ongoing effect. 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 & reservation 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

• Aspect of the Avian
• Aspect of the Cat
• Aspect of the Crab
• Aspect of the Spider
• Envy

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 Mana 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. 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.

Jewels

A Jewel corrupted by a Vaal Orb can get +1% reduced mana reserved as an implicit modifier

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. The Mortal Conviction keystone allows you to reserve one non-Banner aura for free, but prevents you from having more than one aura active.

Passives which reduce mana reserved: No results found for the given query.

Unique items

These unique items provide reduced or increased reservation:

Item	Base 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.	Unset Ring	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	Lacquered Garb	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.	Necromancer Circlet	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.	Unset Ring	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.	Deicide Mask	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.	Archon Kite Shield	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

Life Reservation

By default, all gem reserves mana instead of life. There is no skill gem that naturally reserve life yet. However, player can use the following ways to reserve life instead:

• Blood Magic keystone passive skill
• Arrogance SupportArrogance SupportAura, Support
  Icon: B
  Level: (1-20)
  Cost & Reservation Multiplier: (220-201)%Requires Level 31Supports any non-blessing skill with a reservation.Supported Skills have (10-19)% increased Aura effect
  Supported Skills Reserve Life instead of Mana
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (0.25-5)% increased Aura effectThis 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. (formerly known as Blood Magic Support)
• 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. unique shield

Related unique items

The following unique items are related to reservation:

Item	Base Item		Stats
Dissolution of the FleshDissolution of the Flesh Crimson JewelLimited to: 1Removes all Energy Shield Life that would be lost by taking Damage is instead Reserved until you take no Damage to Life for 2 seconds (20-30)% more Maximum Life"We awoke to a sudden dawn cresting through the mountains. Each peak rose into searing fire, a massive roiling tide. A great eye gazed upon us, and we became known - utterly."Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.	Crimson Jewel	1	Removes all Energy Shield Life that would be lost by taking Damage is instead Reserved until you take no Damage to Life for 2 seconds (20-30)% more Maximum Life
Blood PriceBlood Price Reaver HelmetArmour: (198-233)Requires Level 40, 85 Str24% reduced maximum Life Regenerate (200-250) Life per second 100% increased Stun and Block Recovery Nearby Enemy Monsters have at least 8% of Life ReservedAn eye for an eye makes the whole world dead.	Reaver Helmet	40	24% reduced maximum Life Regenerate (200-250) Life per second 100% increased Stun and Block Recovery Nearby Enemy Monsters have at least 8% of Life Reserved
Midnight BargainMidnight Bargain Engraved WandWand Physical Damage: 21-38 Critical Strike Chance: 7.00% Attacks per Second: 1.50Requires Level 40, 131 Int(22-26)% increased Spell Damage+(10-20) to Intelligence Minions have (20-30)% increased Movement Speed Minions deal (50-70)% increased Damage +1 to maximum number of Raised Zombies +1 to maximum number of Skeletons +1 to maximum number of Spectres Reserves 30% of Life Cannot be used with Chaos InoculationA chilling hush, a scraping sound Of things no more entombed in ground. A shambling horde is on its way To crush the very light of day.	Engraved Wand	40	(22-26)% increased Spell Damage+(10-20) to Intelligence Minions have (20-30)% increased Movement Speed Minions deal (50-70)% increased Damage +1 to maximum number of Raised Zombies +1 to maximum number of Skeletons +1 to maximum number of Spectres Reserves 30% of Life Cannot be used with Chaos Inoculation
Replica Midnight BargainReplica Midnight Bargain Engraved WandWand Physical Damage: 21-38 Critical Strike Chance: 7.00% Attacks per Second: 1.50Requires Level 40, 131 Int(22-26)% increased Spell Damage+(10-20) to Intelligence Minions have (40-50)% increased Movement Speed Minions deal (50-70)% increased Damage +6 to maximum number of Raging Spirits +3 to maximum number of Summoned Phantasms Reserves 30% of Life Cannot be used with Chaos Inoculation"Simply incredible. I caught an escaping test subject myself with swarms of burning skulls. Delightful!" - Researcher Olesya	Engraved Wand	40	(22-26)% increased Spell Damage+(10-20) to Intelligence Minions have (40-50)% increased Movement Speed Minions deal (50-70)% increased Damage +6 to maximum number of Raging Spirits +3 to maximum number of Summoned Phantasms Reserves 30% of Life Cannot be used with Chaos Inoculation
Tanu AhiTanu Ahi Wyrmscale GauntletsArmour: (176-260) Evasion: (176-260)Requires Level 49, 38 Str, 38 Dex(8-12)% increased Attack Speed (100-150)% increased Armour and Evasion (2-3)% of Physical Attack Damage Leeched as Life 10% chance to gain Adrenaline for 2 Seconds when Leech is removed by Filling Unreserved Life 10% chance to gain Onslaught for 4 Seconds when Leech is removed by Filling Unreserved LifeThere is no greater thrill than leaping into combat, slashing and hewing with utmost abandon.	Wyrmscale Gauntlets	49	(8-12)% increased Attack Speed (100-150)% increased Armour and Evasion (2-3)% of Physical Attack Damage Leeched as Life 10% chance to gain Adrenaline for 2 Seconds when Leech is removed by Filling Unreserved Life 10% chance to gain Onslaught for 4 Seconds when Leech is removed by Filling Unreserved Life
The Coming CalamityThe Coming Calamity Destroyer RegaliaEnergy Shield: (196-258) Movement Speed: -3%Requires Level 53, 145 Int+2 to Level of Socketed Herald Gems (80-100)% increased Energy Shield 35% chance to avoid being Stunned for each Herald Buff affecting you Mana Reservation of Herald Skills is always 45%Whiff of cold, tiny spark, faintest flicker in the dark. Embers swirl, ice takes form, sky exposed - Death's perfect storm. Frost and thunder, flames shine bright, ruin walks the land tonight. By your hand they dance and bend, wield them and brook no end.	Destroyer Regalia	53	+2 to Level of Socketed Herald Gems (80-100)% increased Energy Shield 35% chance to avoid being Stunned for each Herald Buff affecting you Mana Reservation of Herald Skills is always 45%
Offering to the SerpentOffering to the Serpent Legion GlovesArmour: (257-363) Energy Shield: (52-75)Requires Level 57, 44 Str, 44 Int<One to three random Synthesis implicit modifiers>+(15-25) to all Attributes (150-200)% increased Armour and Energy Shield 50% reduced Maximum Recovery per Life Leech (6-10)% increased Attack and Cast Speed (15-25)% increased Damage while Leeching Life Leech effects are not removed when Unreserved Life is Filled"You covet the strength of your peers, mortal? Perhaps it can be yours, if you are willing to make an offering of their blood..." - Vaal Myth of the Third Snake	Legion Gloves	57	<One to three random Synthesis implicit modifiers>+(15-25) to all Attributes (150-200)% increased Armour and Energy Shield 50% reduced Maximum Recovery per Life Leech (6-10)% increased Attack and Cast Speed (15-25)% increased Damage while Leeching Life Leech effects are not removed when Unreserved Life is Filled
The Ivory TowerThe Ivory Tower Saint's HauberkArmour: (443-496) Energy Shield: (76-85) Movement Speed: -5%Requires Level 67, 109 Str, 94 Int+(40-70) to Intelligence +30 to maximum Energy Shield per 100 Reserved Life +(80-100) to maximum Mana Regenerate 2% of Energy Shield per second Chaos Damage is taken from Mana before LifeThe mind is a filter through which anarchy becomes order.	Saint's Hauberk	67	+(40-70) to Intelligence +30 to maximum Energy Shield per 100 Reserved Life +(80-100) to maximum Mana Regenerate 2% of Energy Shield per second Chaos Damage is taken from Mana before Life

Related passive skills

Base passive skills

The following passive skills are related to reservation:

Name	Stats
Curse Mana Reservation Efficiency	10% increased Mana Reservation Efficiency of Curse Aura Skills [1] [2] [3] [4]
Mine Damage and Reservation Efficiency	8% increased Mine Damage 10% increased Mana Reservation Efficiency of Skills that throw Mines [1] [2]
Reservation Efficiency	8% increased Reservation Efficiency of Skills [1] 8% increased Mana Reservation Efficiency of Skills [6] [7] [8] [9] [10]
Reservation Efficiency of Heralds	10% increased Mana Reservation Efficiency of Herald Skills [1] [2]
Stance Reservation Efficiency	10% increased Mana Reservation Efficiency of Stance Skills [1]
Champion of the Cause	6% increased effect of Non-Curse Auras from your Skills 8% increased Reservation Efficiency of Skills 12% increased Area of Effect of Aura Skills [1]
Charisma	16% increased Mana Reservation Efficiency of Skills 6% increased effect of Non-Curse Auras from your Skills [1]
Efficient Explosives	30% increased Mana Reservation Efficiency of Skills that throw Mines Mines have a 15% chance to be Detonated an Additional Time [1]
Presage	Herald Skills have 25% increased Area of Effect 20% increased Mana Reservation Efficiency of Herald Skills [1]
Sanguimancy	50% increased Life Reservation Efficiency of Skills Removes all Mana Skills Cost Life instead of Mana Skills Reserve Life instead of Mana [1]
Seasoned Swordplay	50% increased Mana Reservation Efficiency of Stance Skills [1]
Skittering Runes	50% increased Area of Effect of Hex Skills 20% increased Mana Reservation Efficiency of Curse Aura Skills 20% reduced Mana Cost of Curse Skills [1]
Sovereignty	12% increased Mana Reservation Efficiency of Skills 10% increased effect of Non-Curse Auras from your Skills [1]

Cluster Jewel passive skills

The following Cluster Jewel passive skills are related to reservation:

Name	Stats
Reservation Efficiency	6% increased Mana Reservation Efficiency of Skills [1]
Destructive Aspect	Pride has 50% increased Mana Reservation Efficiency 12% increased Area of Effect of Aura Skills [1]
Electric Presence	Wrath has 50% increased Mana Reservation Efficiency 20% increased Effect of Lightning Ailments [1]
Forbidden Words	25% increased Area of Effect of Curse Aura Skills 15% increased Mana Reservation Efficiency of Curse Aura Skills [1]
Frantic Aspect	Haste has 50% increased Mana Reservation Efficiency Debuffs on you expire 10% faster [1]
Master of Command	100% increased Mana Reservation Efficiency of Banner Skills 15% increased Effect of Non-Curse Auras from your Skills on Enemies [1]
Mortifying Aspect	Malevolence has 50% increased Mana Reservation Efficiency +11% to Chaos Resistance [1]
Pure Aptitude	+20 to Intelligence Purity of Lightning has 80% increased Mana Reservation Efficiency 15% increased Energy Shield Recharge Rate [1]
Pure Guile	+20 to Dexterity Purity of Ice has 80% increased Mana Reservation Efficiency 5% chance to Blind Enemies on Hit [1]
Pure Might	+20 to Strength Purity of Fire has 80% increased Mana Reservation Efficiency 40% increased Stun and Block Recovery [1]
Righteous Path	Zealotry has 50% increased Mana Reservation Efficiency 10% increased Effect of Consecrated Ground you create [1]
Self-Control	Discipline has 80% increased Mana Reservation Efficiency 25% increased Mana Regeneration Rate [1]
Spiteful Presence	Hatred has 50% increased Mana Reservation Efficiency 20% increased Effect of Cold Ailments [1]
Sublime Form	Grace has 50% increased Mana Reservation Efficiency +10% to all Elemental Resistances [1]
Uncompromising	Determination has 50% increased Mana Reservation Efficiency 20% increased Stun Threshold [1]
Volatile Presence	Anger has 50% increased Mana Reservation Efficiency 20% increased Duration of Fire Ailments [1]
Stubborn Student	15% increased maximum Mana 20% increased Armour +1 Armour per 10 Unreserved Maximum Mana [1]

Keystone passive skills

The following keystone passive skills are related to reservation:

Name	Stats
Blood Magic	Removes all mana 10% more maximum Life Skills Cost Life instead of Mana Skills Reserve Life instead of Mana [1]
Immortal Ambition	Energy Shield starts at zero Cannot Recharge or Regenerate Energy Shield Lose 5% of Energy Shield per second Life Leech effects are not removed when Unreserved Life is Filled Life Leech effects Recover Energy Shield instead while on Full Life [1]
Supreme Ego	Auras from your Skills can only affect you Aura Skills have 1% more Aura Effect per 2% of maximum Mana they Reserve 40% more Mana Reservation of Aura Skills [1]

Ascendancy passive skills

The following Ascendancy passive skills are related to reservation:

Ascendancy Class	Name	Stats
Ascendant	Slayer	Life Leech effects are not removed when Unreserved Life is Filled Culling Strike 30% increased Area of Effect if you've Killed Recently Cannot take Reflected Physical Damage [1]
Champion	Inspirational	Banner Skills have no Reservation 30% increased effect of Non-Curse Auras from your Skills When you create a Banner, it gains 40% of the Stages of your placed Banner You and Allies affected by your placed Banners Regenerate 0.1% of Life per second for each Stage [1]
Guardian	Radiant Faith	Grants maximum Energy Shield equal to 10% of your Reserved Mana to you and nearby Allies Grants Armour equal to 25% of your Reserved Mana to you and nearby Allies [1]
Hierophant	Sanctuary of Thought	Gain 20% of Maximum Mana as Extra Maximum Energy Shield 25% increased Mana Reservation Efficiency of Skills 50% less Mana Cost of Skills 1% increased Area of Effect per 50 Unreserved Maximum Mana, up to 100% [1]
Pathfinder	Master Surgeon	Life Flask Effects are not removed when Unreserved Life is Filled Life Flask Effects do not Queue 50% less Life Recovery from Flasks [1]
Slayer	Brutal Fervour	Life Leech effects are not removed when Unreserved Life is Filled 10% reduced Damage taken while Leeching 100% increased Maximum Recovery per Life Leech [1]

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 OrbVaal OrbStack Size: 20Corrupts an item, modifying it unpredictablyRight click this item then left click an item to corrupt it. Corrupted items cannot be modified again. 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

Version history

Version	Changes
3.14.0	Development manifesto quote: "...reservation skills no longer have an associated cost by default, so you don't need the current mana available to reserve a skill. Even when your mana is completely depleted, you can still enable an aura, making it much easier to swap out auras or turn one on again if you accidentally disabled it."