Mana 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

Skill gem					Mana
AngerAngerAura, Spell, AoE, Fire Radius: 36 Mana Reserved: 50% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that adds fire damage to the attacks and spells of you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies deal (12-83) to (21-138) additional Fire Damage with Attacks You and nearby allies deal (10-69) to (16-110) additional Fire Damage with Spells +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.		N/A		24	50% R
DeterminationDeterminationAura, Spell, AoE Radius: 36 Mana Reserved: 50% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants armour to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (32-51)% more Armour +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.		N/A	N/A	24	50% R
VitalityVitalityAura, Spell, AoE Radius: 36 Mana Reserved: 35% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants life regeneration to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies regenerate (0.7-1.65)% Life per second +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.		N/A	N/A	24	35% R
DisciplineDisciplineAura, Spell, AoE Radius: 36 Mana Reserved: 35% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants additional energy shield and increased energy shield recharge rate to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (60-217) additional Energy Shield You and nearby Allies gain 30% increased Energy Shield Recharge rate +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A	N/A		24	35% R
Purity of ElementsPurity of ElementsAura, Spell, AoE Radius: 36 Mana Reserved: 35% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants elemental resistances to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain +(12-27)% to all Elemental Resistances +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.		N/A		24	35% R
WrathWrathAura, Spell, AoE, Lightning Radius: 36 Mana Reserved: 50% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that adds lightning damage to the attacks of you and your allies, and makes your spells deal more lightning damage.Per 1% Quality: 1% increased Area of EffectYou and nearby allies deal (2-16) to (37-248) additional Lightning Damage with Attacks You and nearby allies deal (15-21)% more Spell Lightning Damage +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A	N/A		24	50% R
GraceGraceAura, Spell, AoE Radius: 36 Mana Reserved: 50% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants evasion to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (227-2575) additional Evasion Rating +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A		N/A	24	50% R
HasteHasteAura, Spell, AoE Radius: 36 Mana Reserved: 50% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that increases the movement speed, attack speed and cast speed of you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (9-16)% increased Attack Speed You and nearby allies gain (9-16)% increased Cast Speed You and nearby allies gain (4-9)% increased Movement Speed +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A		N/A	24	50% R
HatredHatredAura, Spell, AoE, Cold Radius: 36 Mana Reserved: 50% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A			24	50% R
ClarityClarityAura, Spell, AoE Radius: 36 Mana Reserved: (34 to 279) Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 10Casts an aura that grants mana regeneration to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies regenerate (2.9-17.2) Mana per second +(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A	N/A		10	(34 R to 279 R)
Arctic ArmourArctic ArmourSpell, Duration, Cold Mana Reserved: 25% Can store 1 use(s) Cooldown Time: 0.50 sec Cast Time: 0.50 secRequires Level 16Conjures an icy barrier that chills enemies when they hit you. You drop chilled ground while moving, and take less Fire and Physical damage while stationary.Per 1% Quality: 1% increased Skill Effect DurationChill Enemy for 0.5 seconds when Hit, slowing them by 30% (8-13)% less Physical Damage taken when Hit (8-12)% less Fire Damage taken when Hit Base duration is (2.5-4.4) secondsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A			16	25% R
Purity of LightningPurity of LightningAura, Spell, AoE, Lightning Radius: 36 Mana Reserved: 35% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants lightning resistance to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (22-41)% additional Lightning Resistance +(0-19) to radius You and nearby allies gain (0-4)% additional maximum Lightning ResistancePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A	N/A		24	35% R
Purity of FirePurity of FireAura, Spell, AoE, Fire Radius: 36 Mana Reserved: 35% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants fire resistance to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (22-41)% additional Fire Resistance +(0-19) to radius You and nearby allies gain (0-4)% additional maximum Fire ResistancePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.		N/A		24	35% R
Purity of IcePurity of IceAura, Spell, AoE, Cold Radius: 36 Mana Reserved: 35% Can store 1 use(s) Cooldown Time: 1.20 sec Cast Time: 1.20 secRequires Level 24Casts an aura that grants cold resistance to you and your allies.Per 1% Quality: 1% increased Area of EffectYou and nearby allies gain (22-41)% additional Cold Resistance +(0-19) to radius You and nearby allies gain (0-4)% additional maximum Cold ResistancePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A			24	35% R
Herald of AshHerald of AshSpell, AoE, Fire, Herald, Duration Radius: 10 Mana Reserved: 25% Can store 1 use(s) Cooldown Time: 1.00 sec Cast Time: 1.00 secRequires Level 16Grants a buff providing fire damage based on your physical damage. While you have this buff, if you kill an enemy, other enemies near them will be burned based on the overkill damage. The burn inflicted by this skill can only be affected by modifiers to damage over time (burning damage is damage over time).Per 1% Quality: 0.75% increased Fire DamageGain 15% of your Physical Damage as Extra Fire Damage Base duration is 4 seconds Base Burning Damage is 25% of Overkill Damage (9-12)% more Spell Fire Damage (0-38)% more Burning DamagePlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.		N/A		16	25% R
Herald of IceHerald of IceSpell, AoE, Cold, Herald Mana Reserved: 25% Can store 1 use(s) Cooldown Time: 1.00 sec Cast Time: 1.00 sec Damage Effectiveness: 80%Requires Level 16Channel ice through your hands, adding cold damage to spells and attacks. If you shatter an enemy, they explode and deal AoE cold damage to enemies near them. The AoE cold damage inflicted by this skill is not affected by modifiers to spell damage.Per 1% Quality: 0.75% increased Cold DamageAdds (4-38) to (5-56) Cold Damage to Spells Adds (4-38) to (5-56) Cold Damage to Attacks Deals (18-308) to (26-462) Cold Damage Damage cannot be ReflectedPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A			16	25% R
Herald of ThunderHerald of ThunderSpell, AoE, Duration, Lightning, Herald Radius: 32 Mana Reserved: 25% Can store 1 use(s) Cooldown Time: 1.00 sec Cast Time: 1.00 sec Damage Effectiveness: 120%Requires Level 16Channel lightning through your hands, adding lightning damage to spells and attacks. If you kill a shocked enemy, lightning bolts will strike enemies around you for a short duration. The lightning bolt damage inflicted by this skill is not affected by modifiers to spell damage.Per 1% Quality: 0.75% increased Lightning DamageAdds (2-19) to (7-76) Lightning Damage to Spells Adds (2-19) to (7-76) Lightning Damage to Attacks Deals (1-27) to (34-1303) Lightning Damage Base duration is 6 seconds Cannot apply ShockPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.	N/A	N/A		16	25% R
Blasphemy SupportBlasphemy SupportSupport, Curse, Aura Icon: A Can store 1 use(s) Cooldown Time: 0.50 secRequires Level 31Supports curse skills, turning them into auras that will apply their effect to all enemies in an area around you.Per 1% Quality: 0.5% increased Effect of Supported CursesSupported Curse Spells are Cast as Auras (0-76)% increased Area of Effect of Curse SkillsThis 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.	N/A	N/A		31	N/A

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: rRequires 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 CostSupported 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 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 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 Level: 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
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 EnemiesRight 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:

Item		Stats
Conqueror's Efficiency Conqueror's Efficiency Crimson JewelLimited to: 12% reduced Mana Reserved 4% increased Skill Effect Duration 3% reduced Mana Cost of SkillsThe stone may yet bleed.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.	1	2% reduced Mana Reserved 4% increased Skill Effect Duration 3% reduced Mana Cost of Skills
Essence Worm Essence Worm Unset RingRequires 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	38	Has 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 GarbQuality: +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	52	3% 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 SwordOne 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: 9Requires 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 alliesMaster yourself before you seek to master others.	58	40% 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
Alpha's Howl Alpha's Howl Sinner TricorneQuality: +20% Evasion: (738 to 811)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 8% reduced Mana ReservedNature respects the strong And paints the snow red With the blood of the weak	64	+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 8% reduced Mana Reserved
Impresence Impresence Onyx AmuletRequires 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 EnemyThough 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 AmuletRequires 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 EnemyThough 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 AmuletRequires 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 EnemyThough 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
Impresence Impresence Onyx AmuletRequires 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 EnemyThough 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 AmuletRequires 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 EnemyThough 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
Saqawal's Nest Saqawal's Nest Blood RaimentQuality: +20% Evasion: 523 Energy Shield: 84Requires Level 65, 107 Dex, 90 Int3% reduced Movement Speed (Hidden)+(25-75) to all Attributes +(30-40)% to Lightning Resistance (10-6)% reduced Mana Reserved 100% increased Aspect of the Avian Buff Effect Aspect of the Avian also grants Avian's Might and Avian's Flight to nearby Allies +(120-150) to Evasion Rating and Energy ShieldThe First of the Sky was the Last of the First. It was he who showed us that our limits are self-imposed, that what we take for law may just be an illusion.	65	3% reduced Movement Speed (Hidden)+(25-75) to all Attributes +(30-40)% to Lightning Resistance (10-6)% reduced Mana Reserved 100% increased Aspect of the Avian Buff Effect Aspect of the Avian also grants Avian's Might and Avian's Flight to nearby Allies +(120-150) to Evasion Rating and Energy Shield
The Perfect Form The Perfect Form Zodiac LeatherQuality: +20% Evasion: (1281 to 1451)Requires Level 65, 197 Dex3% reduced Movement Speed (Hidden)(30-50)% increased Evasion Rating +(50-80) to maximum Life -30% to Cold Resistance (5-10)% increased Dexterity 100% reduced Arctic Armour Mana Reservation Evasion Rating is increased by Uncapped Cold Resistance Phase AcrobaticsWe share one space, speak one voice, act through one body. A flawless crystal. Brittle.	65	3% reduced Movement Speed (Hidden)(30-50)% increased Evasion Rating +(50-80) to maximum Life -30% to Cold Resistance (5-10)% increased Dexterity 100% reduced Arctic Armour Mana Reservation Evasion Rating is increased by Uncapped Cold Resistance Phase Acrobatics
Heretic's Veil Heretic's Veil Deicide MaskQuality: +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 Socketed Curse Gems have 12% reduced Mana ReservationBranded 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 Socketed Curse Gems have 12% reduced Mana Reservation
Skyforth Skyforth Sorcerer BootsQuality: +20% Energy Shield: 58Requires 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 LifeThe 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 CrownQuality: +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 ManaYour 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 ShieldQuality: +20% Chance to Block: 22% Armour: 187 Energy Shield: 36Requires 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 ResistancesWhen blood is paid, the weak think twice.	68	3% 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 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 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 JewelLimited to: 12% reduced Mana Reserved
  4% increased Skill Effect Duration
  3% reduced Mana Cost 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 TricorneQuality: +20%
  Evasion: (738 to 811)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
  8% reduced Mana ReservedNature respects the strong
  And paints the snow red
  With the blood of the weak, Prism GuardianPrism Guardian
  Archon Kite ShieldQuality: +20%
  Chance to Block: 22%
  Armour: 187
  Energy Shield: 36Requires 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 ResistancesWhen blood is paid, the weak think twice., and SkyforthSkyforth
  Sorcerer BootsQuality: +20%
  Energy Shield: 58Requires 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 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.

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 secRequires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality:
1% increased Area of EffectYou and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage
+(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:
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 ShieldQuality: +20%
Chance to Block: 22%
Armour: 187
Energy Shield: 36Requires 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 ResistancesWhen 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 secRequires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality:
1% increased Area of EffectYou and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage
+(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:
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 JewelLimited to: 12% reduced Mana Reserved
4% increased Skill Effect Duration
3% reduced Mana Cost 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 TricorneQuality: +20%
Evasion: (738 to 811)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
8% reduced Mana ReservedNature respects the strong
And paints the snow red
With the blood of the weak, SkyforthSkyforth
Sorcerer BootsQuality: +20%
Energy Shield: 58Requires 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 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 ShieldQuality: +20%
Chance to Block: 22%
Armour: 187
Energy Shield: 36Requires 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 ResistancesWhen 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 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 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 secRequires Level 24Casts an aura that increases the cold damage of you and your allies.Per 1% Quality:
1% increased Area of EffectYou and nearby allies gain (26-36)% of Physical Damage as Extra Cold Damage
+(0-19) to radiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.:
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%

External links

• Mikelat's Path of Exile Aura Calculator