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Class: Necromancer (Diablo III)
Required Level: 61
Skill Category: Blood and Bone
Cost: 25% Life
Cooldown: 120 seconds

Creates a Simulacrum made of blood that will duplicate Secondary Essence Spenders cast for 15 seconds.

Damage Type: Physical
Other Stats: Summon

Simulacrum is a Blood and Bone Necromancer skill in Diablo III.


When cast, creates a bloody entity (visually, a skinless human body) that will, without any additional cost, duplicate any Essence-spending skills (Secondary skills: Death Nova, Bone Spear, Skeletal Mage) at any nearby target of its choice. They only duplicate the actual casts by the character, do not make casts of their own, and thus cannot use a skill that the Necromancer does not have equipped.

For all purposes, these spells apply as if the Necromancer cast them, benefiting from enhancements, except for they spend no resources. However, the spell also comes at a considerable cost of quarter of the character's maximum Life.

Any effect that would increase minion damage will only apply to the Simulacrum's own attacks: its spells are only enhanced if the Necromancer's own are.

The Simulacrum will follow the Necromancer around, and will attack on its own (with a one-handed scythe), but can be attacked by enemies too (though it also blocks pathing).

Skill Runes[]

Blood and Bone
  • Cursed Form: While active, makes all Curse skills apply all three curses to each target, even if the Necromancer does not have the other two Curses on their skill set. This does not cause the skills to be cast; instead, any enemy affected by one Curse automatically receives the effect of the other two.
  • Reservoir: While active, also increases maximum Essence by 100%. When this effect is applied, the current Essence also increases so that its percentage remains the same.
  • Self Sacrifice: While Simulacrum is active, if the Necromancer suffers fatal damage, the Simulacrum is immediately destroyed and the Necromancer is healed to full Life without dying. This effect activates after all other life-saving effects are expended.
  • Blood Debt: Life costs for skills are reduced by 75% of their original cost while Simulacrum is active. This does not apply to the Simulacrum itself.
  • Blood and Bone: Also creates the second Simulacrum of Bone, which will likewise duplicate spells (so each skill will be used 3 times at once), but the duration is reduced to 10 seconds. Life cost does not change.

Non-rune enhancements[]

  • Haunted Visions (Legendary Amulet): Simulacrum drains 1% of the Necromancer's maximum Life every second, but lasts forever. Will no longer duplicate Skeletal Mage, instead duplicating Grim Scythe.
  • Tasker and Theo (Legendary Gloves): Simulacrum attacks 40-50% faster.
  • Enforcer (Legendary Gem): increases damage by 15% (+0.3% per rank) and reduces damage taken by 90% (rank 25 bonus).
  • Gelmindor's Marrow Guards (Legendary Bracers): Bone Spear cast from Simulacrums deals 300-400% increased damage.
  • Bones of Rathma Set (Set Bonus for 2 items): Necromancer's minions reduce the remaining cooldown of Army of the Dead by 0.5 seconds each time they deal damage.
  • Bones of Rathma Set (Set Bonus for 4 items): Simulacrum become immune to damage. the Necromancer gains 1% damage reduction for 15 seconds each time their minions deal damage, stacking up tp 75 times.
  • Bones of Rathma Set (Set Bonus for 6 items): each permanent minion increases the damage of Bone Spirit and Army of the Dead by 500%, up to 9000%.
  • Trag'Oul's Avatar Set (Set Bonus for 6 items): Simulacrum and its Blood skills (which would cost Life to Necromancer) deal 3800% increased damage. Healing from skills is increased by 100%.
  • Masquerade of Burning Carnival Set (Set Bonus for 2 items): Simulacrums no longer take damage, gain all runes, and its cooldown is refreshed on death.
  • Masquerade of Burning Carnival Set (Set Bonus for 4 items): while active, damage taken is reduced by 50%, and damage taken is split between the Necromancer and their Simulacrums.
  • Masquerade of Burning Carnival Set (Set Bonus for 6 items): Bone Spear cast by Simulacrums deals 6,000% increased damage (and same for normal casts).



This section contains facts and trivia relevant to this article.
  • This skill (with Self Sacrifice rune) is one of the two ways to be saved from dying by an active skill, the other being Prophet.