Final Dagger

Weapon (dagger), uncommon

Lore. Nobody knows who first hit upon the idea of binding spirits into weapons during the Divine War. In theory, the spirits increased the weapon’s power. The practice was abandoned rather quickly, as convincing the spirits to perform the task for which they were bound was often more than the item’s bearer could achieve.

However, before the project ended, a great many daggers imbued with spirits were issued to individuals.

Powers. As an action, you can beseech the spirits bound into this magic dagger. Make a DC 16 Charisma (Persuasion) check. On a success, the next time you score a hit with the dagger you score a critical hit. In addition, the spirits sacrifice themselves, dealing an additional 3d8 necrotic damage. The weapon then forever becomes non-magical.