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Arma Mortis (a.k.a. Armis Mortem) is a tome written by an unknown angel in Reaper ranks, describing the research of Malthael on human nature, their souls, and the ways to weaponize them.

It reads as follows:

Within the breast of every human on Sanctuary lies a mote of pure darkness, proof of the breed’s demonic parentage. I suspect there may be a way to draw out that evil and contain it. Of course, the process is fatal, but I propose death is infinitely preferable to the life of doubt, rage, and confusion this darkness engenders.

I discovered I might bind the darkness of the human soul into metal armaments as they are being forged. Evil intent literally roils off the metal, and I've never wielded anything so wickedly sharp.

The malleability of mortal soulstuff is remarkable. I wonder to what other ends I might put it.

I believe that just being in close proximity to the dark power within human souls induces an entropic effect in other materials. To be certain, though, I must test my theory by exposing material to the aura of the soulmetal I’ve forged and then inserting the exposed material into a living subject. A ranged weapon would make the ideal delivery system.

The more subjects from whom I extract souls, the easier the process becomes.

It occurs to me that human souls might be alloyed with more than base metal. Their essence could likely be contained within energy matrices as well... or perhaps even within the light and harmony that makes up angelic forms. If those energies could be controlled, they would prove a source of immense power.

I realize now I’ve made a terrible mistake. The knowledge that the power of human souls might be extracted and used to empower the angelic Host would immediately escalate the Eternal Conflict. And if demons were to learn these methods, too... I daresay the war would end in our mutually assured destruction. All life would be extinguished. No one must ever know what I’ve discovered.


Book mysticformulas

Arma Mortis is available as a Mystic plan given to players who purchased the Diablo III: Reaper of Souls Digital Deluxe Edition or Collector's Edition. It provides seven weapon and off-hand Transmogrification plans when used at the Mystic, all themed after Reapers and their artifacts:

For centuries, this tome of weapon schematics was locked away, the items it depicted deemed by its author as too dangerous to ever see the light of day. During the confusion after the reaper invasion of Westmarch, however, the Armis Mortem somehow made its way into your hands.


This section contains facts and trivia relevant to this article.
  • In Latin, Arma Mortis means Weapon of Death.

See Also[]

Diablo III Aesthetic Items
Anguish's Grasp
Cosmic Wings
Crimson Angelic Wings
Dark Bat (removed)
Echoes of the Mask
Falcon's Wings
Ghost Kerrigan Wings
Hatred's Grasp
Inarius Wings
Lilith's Embrace
Lord Culsu's Wings (removed)
Mercy Wings
Osseous Grasp (removed)
Prime Evil Wings
Sanguine Flight
Terror Unleashed
Trag'Oul's Wings
Wings of Justice
Wings of Kokabiel (removed)
Wings of Lempo
Wings of Mastery
Wings of Terror
Wings of the Betrayer
Wings of the Crypt Guardian
Wings of the Dedicated
Wings of the Swarm
Wings of Valor
Angelic Goblin
Blaine's Bear
Blood Rose
Book of Cain
Corvus Cadaverous
Dominion's Revenge
Dream of Piers
Emerald Dragon
Frost Hound
Half-formed Golem
Inarius Murloc
Lacuni Cub
Lesser Mummy
Liv Moore
Old Growth
Pets dropped by Menagerist Goblins
Royal Calf
Stupendous Contraption
Taennin the Tiny
Tal'darim Probe
The Butcher
The Dark Lordling
The Dark Murglrrr
Toothsome Trooper
Ascendant Pennants
Blood Master Pennant
BlizzCon 2015 Pennant
Grimpola Warsong
Heroes of the Storm Pennant
Mastery Pennants
Seasonal Pennants
Transmogrification Items
Arma Mortis
Arma Haereticorum
Flail of Carnage
Guardian Facade
Hand of Despair
Helm of Cranial Crustacean
Helm of the Hierarch
King Maker
Lachdanan's Stormshield
Man Prodder
Pauldrons of the Hierarch
Quinquennial Sword
Second Quinquennial Sword
Star Helm
Star Pauldrons
Sungjae's Fury
The Que-Hegan's Will
The Reaper's Kiss
Visage of the Betrayer
Mysterious Chest items