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Whisperbane Knife
From Warhammer 40k - Lexicanum
Whisperbane Knives are common blades, that minor Daemons have been bound into, by Rogue Psykers. While considered weak by the standards of true Daemon Weapons, they are still deadly weapons to wield. However those who do so, are sent into a frenzy by the Knives whenever they are in the presence of an exposed throat or turned back.[1]
Source
- 1: Necromunda: The Book of Judgement, pg. 108 - Corrupted Weapons Reference