Keeper's Fang
Weapon (Dagger), Rare
Cost: 4,002 gp
Weight: 1 lb.
Base Items: Dagger
These infamous weapons, prized by assassins, have a Khyber dragonshard embedded into the pommel that channels the souls of victims, but doesn't itself trap them. There's much debate over the actual fate of the souls of those slain by a Keeper's Fang. Common myth says that the souls of victims are trapped in the Lair of the Keeper, and heroes can seek to reclaim a soul from the Sovereign of Death and Decay. Another myth maintains that these weapons channel souls to the overlord Katashka, and that one must deal with the Lords of Dust to restore a victim. Most Keeper's Fangs were created by the Shaarat'khesh assassins of the Empire of Dhakaan. Rather than ascribing the blade's power to the Keeper—whose existence the Dhakaani reject—they believe these blades utterly destroy the souls of their victims.
You gain a +1 bonus to attack and damage rolls made with this magic weapon. Whenever you use it to reduce a creature to 0 Hit Points, the creature is slain and its soul removed. A creature whose soul has been stolen in this way can be restored to life only by means of a Wish spell.
Byeshk Weapons
Byeshk is a rare and heavy metal of lustrous purple, mined from the Byeshk and Graywall Mountains along Droaam's borders. It can also be found in the Ironlands, a Khyberian demiplane that's been delved into by the Ghaash'kala and Kech Shaarat. Aberrations tied to the daelkyr—including Dolgaunts, Dolgrims, and Mind Flayers—are susceptible to weapons made of byeshk alloys, making the metal highly valued to the Dhakaani, Gatekeepers druids, and others that fight Aberrations. Dhakaani weapons forged during the Xoriat Incursion were often forged from byeshk.
Melee weapons made of or coated with byeshk are not inherently magical weapons, but are unusually effective when used to fight Aberrations. Whenever you hit an Aberration with a byeshk weapon, the Aberration takes an extra 1d6 damage of the weapon's type, and it can't regain Hit Points until the start of your next turn.
The byeshk version of a Melee weapon costs 400 GP more than the normal version, whether the weapon is made of the metal or coated with it.