The Devouring Dagger is a fear-inducing blade that inflicts stress on its targets with each strike. It was discovered by Sylvie during a heist in Borek's residence among a cache of various items. The dagger invokes terror in those it wounds, evidenced when Sylvie used it against simiah, causing the creature to cry out in pain and fear. The dagger was handed to Sylvie by Heyou, who had found it in the hoard. During the heist, Sylvie and Heyou attempted to escape Borek's building but were confronted by simiah, leading to a chaotic confrontation.
While invisible, Sylvie slashed the simiah with the Devouring Dagger, resulting in a deep cut that caused significant distress. The dagger's magic enhanced the fear response, leaving the simiah confused and terrified despite not being able to see its attacker. The Devouring Dagger significantly influenced the psychological state of its targets during combat.
The Devouring Dagger is also known to mark stress on its target upon a successful attack. When it strikes, the victim exhales a puff of black umbral smoke as they fall, resembling the release of a soul from a body. Heyou wielded the Devouring Dagger during a confrontation with undead dwarves, and each strike caused the dagger's effect to manifest, resulting in black smoke exhaled from the fallen corpses. This terrifying display caused the remaining undead to scatter in fear, further showcasing the dagger's potent abilities in battle.
Current developments reveal that the dagger's fear-inducing properties extend beyond mere psychological effects, as its victims physically manifest their terror through the release of dark smoke, marking a significant aspect of its power in combat scenarios.