Suin Daellae

The Gift

Suin Daellae — the Doom that Wails — was forged by Vaul, the smith-god of the Aeldari pantheon, as part of the long bargain between him and Khaine. Vaul made the Hundred and One Swords; Suin Daellae was the first and greatest, made for Khaine's own hand.

The blade is wraithbone — psychoreactive Aeldari material — but of a grade no modern Bonesinger can reproduce. The sword learns from each cut. It remembers every soul ever taken by it.

The Bloody-Handed God walks. Open your throats.

— Avatar of Khaine summoning chant

The Wail

The sword screams as it cuts. The sound is said, by Aeldari poetic record, to be Khaine's own voice — the god's grief at every death, made audible to the dying. Beings who have heard the wail and survived have, without exception, lost the ability to sleep without dreaming of it.

The Avatar

Only the Avatar of Khaine has been permitted to wield Suin Daellae. No Aeldari mortal — not Eldrad, not Asurmen, not Jain Zar — has lifted it from the Avatar's grip without immediately falling. The sword does not permit it.

When the Avatar falls in battle, the sword is recovered by Bonesingers and laid beside the shrine that will eventually summon the next Avatar. The blade waits, by Aeldari tradition, with a patience the sword itself shares.

The Mythological Origin

Suin Daellae — "The Doom that Wails" in the surviving Aeldari pre-Fall dialect — is, by Aeldari mythological consensus, the personal sword of Khaine the Bloody-Handed God. The sword's mythological origin is recorded in the Hundred and One Swords saga as the one weapon Vaul the smith-god did not include in the hundred swords he forged for Khaine in payment of his original debt. Suin Daellae was instead made by Khaine himself, in collaboration with Vaul, as a weapon Khaine would carry personally rather than distribute among the Aeldari pantheon.

The sword's mythological function was to absorb and channel the blood-cries of every Aeldari killed in battle, transforming the cries into power that Khaine could use in subsequent engagements. The function was, by Aeldari pre-Fall theology, the basis of Khaine's reputation as the god of war — not merely a war-god but specifically the war-god who was empowered by his own species' deaths. The theological implication was that every Aeldari who died in any conflict contributed to Khaine's strength. The implication was uncomfortable but accepted.

The Avatar's Hand

In the post-Fall era, after Khaine was shattered by Slaanesh and his fragments distributed across Aeldari Craftworlds, Suin Daellae's function passed to the Avatar of Khaine — the bronze-and-fire physical manifestation that each Craftworld can summon by sacrificing blood at the chamber of its Khaine-shard. The Avatar, when summoned, carries Suin Daellae as its primary weapon. The sword retains its original mythological function: every Aeldari death in the Avatar's vicinity strengthens the Avatar.

The practical consequence is that an Avatar in active battle becomes progressively stronger as Aeldari casualties mount around it. The pattern has been documented by Imperial observation in seven separate Aeldari engagements; the observation has produced specific Imperial Guard doctrine for engagements where an Avatar may appear, which involves avoiding Aeldari-casualty events near the Avatar's expected approach vector. The doctrine has been implemented with mixed success.

The Material Composition

Suin Daellae's physical composition has been the subject of three confirmed Mechanicus studies, conducted on recovered Avatar-fragments after engagements in which an Avatar had been defeated and its physical form had collapsed. The studies have produced inconsistent results. The first, conducted in M37, classified the sword's composition as "psycho-active wraithbone of unusual purity." The second, conducted in M40, classified it as "molten metal with unidentified psychic-resonance properties." The third, conducted in 025.M42 on a fragment recovered from Iyanden's defeated Avatar, classified it as "neither wraithbone nor molten metal; composition not currently classifiable."

The inconsistency is, by Mechanicus theological assessment, evidence that the sword's physical form may be Avatar-dependent — that different Craftworlds' Avatars may manifest Suin Daellae in materially different forms while retaining its mythological function. The hypothesis is not contradicted by any surviving Aeldari mythological source, but it is also not confirmed by any surviving Aeldari mythological source. The Aeldari Farseer council, when asked, has declined to comment.

The Ynnari Question

The Ynnari movement's M42 emergence under Yvraine's leadership has raised a specific question about Suin Daellae: if Ynnead, the Aeldari god of the dead, fully awakens and consumes Slaanesh — restoring the scattered Aeldari pantheon — what becomes of Khaine's sword? The orthodox Craftworld position is that the sword has been functioning across the Avatars and would, if Khaine were restored, simply return to his hand. The Ynnari position, less doctrinally settled, suggests that the sword has been changed by ten thousand years of Avatar service and may have developed an identity of its own that would not necessarily reunite with the restored Khaine.

The Aeldari Farseer council has, in classified communications with senior Sororitas observers, indicated that the question is "theologically interesting but operationally premature." The council's working position is that the question's eventual answer will become clear only when Ynnead's awakening progresses to a stage where the question becomes practically relevant. The awakening has not yet reached that stage. The sword continues to be wielded by Avatars in every Craftworld engagement that requires Avatar summoning. The Avatar's wielding has not changed in the M42 era.