Blood Magic is a keystone passive skill which removes all mana, and causes you to spend life instead of mana for skills. Skills that reserve mana will now reserve life instead. The cost of skills is calculated normally, so reduced mana cost or reduced mana reservation modifiers will reduce the amount of life used.
Casting a spell that would reserve 100% of your mana with this keystone will kill the player instantly. For example Spell Totem + Purity of Elements (250% cost multiplier of a 40% reserve aura for a 100% reserve cost, which will reserve all your health).
When combined with Chaos Inoculation, using a skill with a mana cost above 1 is impossible due to insufficient life. If a skill costs exactly 1 mana, activating it will kill the player instantly. Reserving any percentage of your life under Chaos Inoculation will also kill the player (unless the reserve would be more than 100% in which case the skill cannot be activated).
|Class||Distance from start|
Malachai's SimulaMalachai's Simula
Iron MaskEvasion Rating: 41
Energy Shield: 13Requires Level 17, 21 Dex, 21 Int(15 to 30)% increased Spell Damage
+20 to Strength
(20 to 30)% increased Lightning Damage
10% to Lightning Resistance
20% increased Mana Cost of Skills
Blood MagicIt was a sliver of Malachai's soul
that animated the first Eternal Guardian. and The CovenantThe Covenant
Spidersilk RobeEnergy Shield: (288 to 330)Requires Level 49, 134 IntGems in this item are Supported by level 15 Added Chaos Damage
+(20 to 30) to Intelligence
20% reduced maximum Life
(180 to 220)% increased Energy Shield
Blood Magic"My Soul is your Strength
My Price is your Blood" have Blood Magic. Prism GuardianPrism Guardian
Archon Kite ShieldChance to Block: 24%
Energy Shield: 48Requires Level 68, 85 Str, 85 Int+24% to all Elemental Resistances+1 to Level of Aura Gems in this item
Gems in this item have Blood Magic
Gems in this item have 25% reduced Mana Reservation
+(20 to 30) to Dexterity
+25% to all Elemental ResistancesWhen blood is paid, the weak think twice. has Blood Magic for skill gems in this item. These items allow the use of Blood Magic without the keystone, and without the extra cost from the mana multiplier in the support gem.