Blood Magic

For the support gem, see Blood Magic Support.

Blood Magic (often referred to as BM) is a keystone passive skill that allows the character to spend life instead of mana to use skills. It also sets maximum mana to zero. If taken with Eldritch Battery energy shield will continue to protect mana but will not be spent.

Skills that reserve mana will reserve life when linked with this gem. The cost of skills is calculated normally, so reduced mana cost or reduced mana reservation modifiers will reduce the amount of life used. It is not possible to commit suicide through Blood Magic.

Location

Blood Magic is located in the bottom left corner of the tree. Taking Blood Magic is required to reach the two 10% life nodes and the notable passive skill, Mortal Conviction.

Class	Distance from start
Marauder	12
Duelist	12
Templar	14
Scion	16
Ranger	19
Witch	21
Shadow	26

Item modifiers

These unique items have the Blood Magic modifier, which provides the same effect as this keystone. Taking the keystone in addition to equipping one of these items will impart no additional benefit.

• Malachai's SimulaMalachai's Simula
  Iron MaskEvasion: (48-60)
  Energy Shield: (11-14)Requires Level 17, 21 Dex, 21 Int+20 to Strength
  +(20-30)% to Lightning Resistance
  Spells have a 20% chance to deal Double Damage
  Blood MagicIt was a sliver of Malachai's soul
  that animated the first Eternal Guardian.
• The CovenantThe Covenant
  Spidersilk RobeEnergy Shield: (313-409)
  Movement Speed: -3%Requires Level 49, 134 IntSocketed Gems are Supported by Level 29 Added Chaos Damage
  +(20-30) to Intelligence
  (210-250)% increased Energy Shield
  10% increased maximum Life
  Skills gain a Base Life Cost equal to 100% of Base Mana CostMy Soul is your Strength
  My Price is your Blood (Pre-2.6.0 legacy variant)
• Tukohama's FortressTukohama's Fortress
  Ebony Tower ShieldChance to Block: 25%
  Armour: (357-411)
  Movement Speed: -3%Requires Level 61, 159 Str+(20-30) to maximum Life40% increased Totem Damage
  +(80-100) to maximum Life
  +1 to maximum number of Summoned Totems
  +300 Armour per Summoned Totem
  Blood MagicTukohama knew that he could not lose a fight in his fortress.
  So he carried his fortress to the fight.

Maps with the "...of Hemomancy" suffix treat all characters as if they have the Blood Magic keystone (suffix no longer appears).

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 The CovenantThe Covenant
Spidersilk RobeEnergy Shield: (313-409)
Movement Speed: -3%Requires Level 49, 134 IntSocketed Gems are Supported by Level 29 Added Chaos Damage
+(20-30) to Intelligence
(210-250)% increased Energy Shield
10% increased maximum Life
Skills gain a Base Life Cost equal to 100% of Base Mana CostMy Soul is your Strength
My Price is your Blood grants Blood Magic to skill gems socketed in it, allowing the character to spend life instead of mana on those skills. However, unlike the Blood Magic keystone, it does not reduce maximum mana to zero. It also does not have a mana multiplier like .

Hezmana's BloodlustHezmana's Bloodlust
Vaal AxeTwo Handed Axe
Physical Damage: (222-256.5) to (378-447.75)
Critical Strike Chance: 5.00%
Attacks per Second: 1.15
Weapon Range: 1.3 metresRequires Level 64, 158 Str, 76 Dex25% chance to Maim on Hit(100-125)% increased Physical Damage
Adds (7-10) to (15-25) Physical Damage
1% of Physical Attack Damage Leeched as Life
40% increased Attack Speed if you've taken a Savage Hit Recently
Attacks Cost Life instead of ManaWhen a craving cannot be sated, any source will do. grants Blood Magic to all Attack skills used by the character.