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.
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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: 41
Energy Shield: 13Requires Level 17, 21 Dex, 21 Int(15-30)% increased Spell Damage
+20 to Strength
(20-30)% increased Lightning Damage
+10% to Lightning Resistance
Blood MagicIt was a sliver of Malachai's soul
that animated the first Eternal Guardian.
- The CovenantThe Covenant
Spidersilk RobeEnergy Shield: (391 to 432)Requires Level 49, 134 Int3% reduced Movement Speed (Hidden)Socketed Gems are Supported by level 15 Added Chaos Damage
+(20-30) to Intelligence
20% reduced maximum Life
(280-320)% increased Energy Shield
Blood MagicMy Soul is your Strength
My Price is your Blood
Maps with the "...of Hemomancy" suffix treat all characters as if they have the Blood Magic keystone.
Prism GuardianPrism Guardian
Archon Kite ShieldChance to Block: 22%
Energy Shield: 40Requires 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. 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.
Hezmana's BloodlustHezmana's Bloodlust
Vaal AxeTwo Hand Axes
Physical Damage: (215 to 240.3)–(365 to 421.2)
Critical Strike Chance: 5.00%
Attacks per Second: 1.20Requires Level 64, 158 Str, 76 Dex(150-170)% increased Physical Damage
Adds (7-10) to (15-25) Physical Damage
1% of Physical Attack Damage Leeched as Life
Attacks have Blood MagicWhen a craving cannot be sated, any source will do. grants Blood Magic to all Attack skills used by the character.