Certain races in BG3 provide more support for certain builds and classes. What are the different racial traits, and which ...

Specifically, it's found from in an area unlocked by completing the 'Defeat the Duergar Intruders' quest (X:50, Y:75).

Snatched from the realm of the mad wizard Halaster Blackoak, this knife became a prized keepsake of a duergar king.